Sonic Studio Process User Manual
Contents
1. Figure 10 DeCrackle Parameters area of the Parameters Window A common type of impulse noise is crackle in which small impulses crowd against one another producing a nearly continuous noise like bacon frying in a pan This type of artifact requires a different processing approach The Decrackle process in Sonic Studio Process is effective for correcting this type of dense impulsive noise by performing a type of sliding interpolation that isolates good audio between impulses and uses the good audio as the basis for resynthesis Note lf you soundBlade user and have purchased and installed either our Manual DeClick or NoNOISE II SR option DeCrackle will appear in the Process pull down menu DeCrackle is not available for Amarra users 1 1 3 1 Threshold Click Fraction This number affects the detection part of the Decrackle algorithm in which audio samples are separated into good and bad categories synthesis process then replaces the samples that are deemed bad with synthesized material that matches the surrounding sound TheThreshold is the percentage or fraction of the samples that will be left in the good category The range of the parameter is from 0 85 to 0 99 The higher the Threshold the less aggressive the decrackling For heavier decrackling make the Threshold smaller as low as 0 85 Any lower is not recommended as there will be too little of the original signal to provide a basis for resynt2. nic Studio Process money Tet gem Felder Doha Fiera ume ler ti ipd ode Bre ELLES Aber mij ae Geren r AE 1 www sonicstudio com Sonic Studio Process User Manual Table Of Contents 1 0 Sonic Studio Process 4 1 1 ERREUR 5 1 1 1 SOUT OMNES iig EE A 6 1 1 2 Processes Area Sample Rate 7 1 1 2 1 7 2819 8 Lo ON 7 182106 0 tte cc 8 1 1 2 2 Selecting Fas CNN CER 10 1 1 3 1 Threshold 12 1 1 3 2 e 13 1 2 THE 5 cpm hic bia nC a decia cre tie 14 1 3 DTS mcd IER 15 1 3 1 Studio Process ta usu opas ix E 15 1 3 1 1 ADOUL SONIC P TN 15 1 3 1 2 PROTEIENCES EM 15 1 3 1 3 Hide Sonic Studio 99 TTA OL LLL SL Lom 15 1 3 1 4 MAE ONEI Os PE 15 1 3 1 5 si gros dox eec DR v ER 15 1 3 1 6 UIE 55 nc 15 1 3 2 1 SD IONE
3. 12 Preferences Disabled for Sonic Studio Process 1 3 1 3 Hide Sonic Studio Process Use the Hide Sonic Studio Process menu item to hide Sonic Studio Process and all of its open windows allowing you access to other programs running in Mac OS X Clicking on the Sonic Studio Process icon in your Dock returns Sonic Studio Process to view 1 3 1 4 Hide Others Use the Hide Others menu item to hide all visible applications except Sonic Studio Process allowing you to focus on Sonic Studio Process alone Clicking on any icon in the doc will return that application to view 1 3 1 5 Show All The Show All menu item un hides all running programs in Mac OS X 1 3 1 6 Quit Sonic Studio Process Use the Quit Sonic Studio Process menu item to quit Sonic Studio Process and close all open windows Page 15 1 3 2 File Menu Show Params 3 1 Show Que Manager 3 2 Open Sound File 850 Convert FLAC File to AIFF Convert FLAC Folder to AIFF Check For Updates Sonic Studio Website Open Console Log 1 3 2 1 Show Params Opens the Sonic Studio Process Parameters window 1 3 2 1 Show Que Manager Opens the Sonic Studio Process Que Manager window 1 3 2 1 Open Sound File This command opens a Mac OS file browser allowing you to select any sound file recognized by Sonic Studio Process This includes AIFF WAV AIFC 32 bit floating point files and BWF files along with SD2 or Sound Designer ll files with region de
4. 2 2 3 2 EractiorialdaatiOCODnVer SOLD 21 2006 2013 Sonic Studio LLC All rights reserved This manual as well as the software described in it is furnished under license and may only be used or copied in accordance with the terms of such license The information in this manual is furnished for informational use only is subject to change without notice and should not be construed as a commitment by Sonic Studio LLC Sonic Studio LLC assumes no responsibility or liability for any errors or inaccuracies that may appear in this document Except as permitted by such license no part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical recording or otherwise without the prior written permission of Sonic Studio LLC SONIC STUDIO LLC MAKES NO WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE REGARDING THE APPLE SOFTWARE SONIC STUDIO LLC DOES NOT WARRANT GUARANTEE OR MAKE ANY REPRESENTATIONS REGARDING THE USE ORTHE RESULTS OF THE USE OF THE SONIC STUDIO LLC SOFTWARE IN TERMS OF ITS CORRECTNESS ACCURACY RELIABILITY CURRENTNESS OR OTHERWISE THE ENTIRE RISK AS TO THE RESULTS AND PERFORMANCE OF THE SONIC STUDIO SOFTWARE IS ASSUMED BY YOU THE EXCLUSION OF IMPLIED WARRANTIES IS
5. GAINS RE 16 1 3 2 1 Show Que Managert dE 16 1 3 2 1 ODE SOU FG 16 1 3 2 2 Convert FLAC Pile to APE a ERAS RAE IE E ENIM REM 16 1 3 2 6 Convert FLAC Folder to AF E oe epe ERO DE 16 1 3 2 7 16 1 3 2 8 SONC VV CIS s 17 1 3 2 9 Open Console Im er re pee 17 1 3 3 c daria 17 2 2 0 Sample Rate Conversion Technical Details 18 2 1 SONIC ISSUES TO CONSIOGER a 18 2 1 1 Data PRECISION eee ben 18 2 1 2 LOW pass Fiter Parameters LM DIM QU SEE 19 2 2 3 Classes or Hate COMVENSION 19 2 2 3 1 Integer Ratio Conversion 19
6. NOT PERMITTED BY SOME STATES THE ABOVE EXCLUSION MAY NOT APPLY TO YOU IN NO EVENT WILL SONIC STUDIO LLC ITS DIRECTORS OFFICERS EMPLOYEES OR AGENTS BE LIABLE TO YOU FOR ANY CONSEQUENTIAL INCIDENTAL OR INDIRECT DAMAGES INCLUDING DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION LOSS OF BUSINESS INFORMATION ANDTHE LIKE ARISING OUT OF THE USE OR INABILITY TO USE THE SONIC STUDIO SOFTWARE EVEN IF SONIC STUDIO HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES BECAUSE SOME STATES DO NOT ALLOWTHE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU Sonic Studio Sonic Studio Process soundBlade Sonic Studio Engine SSE NoNOISE Il Manual DeClick 11 DeClick DeCrackle Type B Type C Type D Type E Type Broadband DeNoise and the Sonic Studio logo are trademarks of Sonic Studio LLC All other company or product names are either trademarks or registered trademarks of their respective owners Page 3 1 0 DONIC Studio Process Overview To increase your productivity and to free up soundBlade or Amarra from tasks that are time consuming and suited for unattended execution Sonic Studio developed the Sonic Studio Process application Sonic Studio Process is an easy to use standalone application for Mac OS X that is utilized for ultrafidelity sample rate conversion and DeCrackle batch processing The Sonic Studio Proce
7. are also stages for 2 1 and 1 2 conversion for doubling and halving the rate 2 1 Sonic Issues To Consider 2 1 1 Data Precision Filter coefficients in Sonic Studio Process algorithms are calculated using advanced arithmetic converted integers and highly efficient DSP techniques The audio data internal word length 24 bits is convolved with the filter coefficients using a double precision multiply algorithm The output is rounded not dithered to 24 bit integer under the assumption that the roundoff error spectrum 15 below audibility and that the output will be dithered to the final bit depth This implementation preserves 24 bit precision in the output data even with very long filters Page 18 2 1 2 Low pass Filter Parameters On mathematical grounds low pass filters requiring steep rolloff in order to attenuate aliases images just outside the audio band will be fairly long Depending on the design a strictly Nyquist filter for 96 kHz 44 1 kHz downconversion having flat inband gain to 20 kHz and stopband attenuation at 22 05 kHz of 120 to 145 dB has about 220 300 coefficients or equivalently a length of 2 3 ms 3 1 ms in time Apart from ease of implementation the advantage of simple decimation ratios if these are the only ratios of concern is that optimal filter design approaches such as the Remez discrete Chebyschev approximation can be used to compute the filter Other things being equal the longer the filter the
8. greater the potential for smearing of the natural time relationships in the audio source The filter can be shortened by relaxing the steepness of the rolloff but at the expense either of reducing gain at the upper edge of the audio band or by allowing aliasing From a sonic standpoint aliasing reduced gain at 20 kHz and increased inband stopband ripple all create audible distortions which at significant levels may be greater factors than the less objectionable effects of filter length On the other hand small amounts of certain distortions may be tolerated with various audio materials in order to minimize the effects of filter length In many cases the shorter filters offer clear benefits and should be judged by audition The rationales for the levels and choices are discussed in a preprint published by the 105th AES Convention San Francisco Sept 1998 Multiphase Filters for Sample Rate Conversion of High Resolution Audio 2 2 3 Classes of Rate Conversion Sonic Studio Process performs two classes of upward or downward rate conversion integer ratio and fractional ratio 2 2 3 1 Integer Ratio Conversion In integer ratio conversion the source and output sample rates bear asimple integer relationship to one another for example 44 1 kHz to 88 2 kHz is 1 2 Integer ratio conversions are the most straightforward Integer ratio down conversion 15 achieved by omitting every other sample in a process known as decimation and
9. is illustrated in Figure 1 Here curve A shows the original analog waveform with its higher sample rate digital representation superimposed Curve B is the down conversion result Page 19 CAN Figure 2 01 Integer Ratio Down Conversion Because decimation causes aliasing folding of frequencies above the Nyquist frequency back into the audible band down conversion requires a steep lowpass filter which cuts off at the Nyquist frequency of the new lower sample rate The Nyquist frequency is one half the sample rate it determines the usable bandwidth of the system For computational efficiency the decimator and lowpass filter are normally combined in a single processing step For upward sample rate conversion the converter needs to create new sample values that are evenly spaced between the source samples This process 15 called interpolation and 15 illustrated Figure 2 03 Figure 2 03 Integer Ratio Up Conversion You can think of up conversion as occurring in two steps First zero value samples are added between input samples at the new higher sample rate Figure 2 03 Curve B Page 20 Then the signal is filtered using a steep lowpass which cuts off at the Nyquist frequency of the old lower sample rate Figure 2 03 Curve C The up conversion filter is called an interpolator Besides providing correct values for the new sam
10. placed in the right processing order they can be automatically performed upon the selected sound files by clicking the Execute button The sound files and the processes to be applied upon them are then queued and processing commences To indicate this action the Oueue indicator below the Execute button shows the number of sound files and processes queued as Wait Run Once the processes are being executed all sound files and processes remain in their respective lists This allows for a quick method of applying different processes to the same file s or vice versa To erase both lists and start new lists for sound files and processes simply click the Clear Files or Clear All buttons next to the lists and the Parameters is cleared from its current list of Page 7 sound files and processes respectively remove all items in the lists automatically enable the Clear List on Execute option Note that upon initiating a process the Sonic Studio Process will ask to confirm the destination folder Note that the order in which sound files are processed 15 fixed and dependant upon the order in which sound files and processes are listed in their respective areas primary processing order 15 defined top to bottom by the order in which the sound files are listed in the Soundfiles area secondary processing order is given by the order of processes in the Processes list So in practice If more than one sound file is liste
11. single dither is a magic bullet so three different variations of dither are available in Sonic Studio Process Page 10 Sonic Studio Process Sample Rate Conversion performs sample rate conversion with ultra high precision and the final step in the process of generating an output file is to round the output to produce a 24 bit file To preserve fine sonic details such as reverberation tails Sonic Studio Process SRC affords the option of applying one of three unique dithers to the output file To assure the highest sound quality Sonic Studio recommends that you apply dither whenever you use SRC or change bit depth Sonic Studio Process Dither Types Rectangular PDF Rectangular Probability Density Function In this random flat dither the noise signal has equal energy at each frequency think white noise Rectangular PDF is the most audible type of dither With rectangular dither the increase in noise varies with the signal It is recommended for use on LOUD overly compressed music such as rock or pop as it gives a certain edge to the sound Triangular PDF Triangular Probability Density Function Default Shaped triangular dither cuts the noise level at low frequencies while boosting it a high frequencies This results in the dither noise being less audible This shaping or weighting reduces the audibility of the noise to a degree With triangular dither the added noise level is constant and slightly higher It is recommended for us
12. types Installing Licensing Manual DeClick Menus MP3 Noise Shaped Open Operating system requirements Output Folder Parameters Pause Resume Processes Processes Area Panel Queue Queue Manager Rectangular PDF Sample Rate Conversion Target Sample Rate SD2 Set Folder Sonic HD Sound File Name list 16 7 12 2 15 11 2 6 16 17 4 6 4 5 6 7 12 14 22 5 78 2 7 12 Project 3 2 4 7 14 14 11 sound files age 23 opening 7A 9 16 Soundfiles 5 6 78 SRC 8 Steep 8 9 10 Synthesis 13 Synthesis Order 13 T Target Sample Rate 9 Threshold 12 13 Triangular PDF 9 11 U Uncompressed 6 W WAV 16 2013 Sonic Studio LLC 1340 Mission Street Francisco CA 94103 1 415 944 7642 soundBlade soundBlade HD soundBlade SE soundBlade LE Sonic Studio Process sonicstudio com the Sonic Studio logo and type are trademarks of Sonic Studio LLC in the United States and other countries All other trademarks trade names service marks and logos referenced herein belong to their respective companies Comments corrections and suggestions regarding this manual are always welcome Please contact us at support sonicstudio com Page 24 Sonic_Studio_Process_UM_v01r14
13. 10 6 8 or newer Spare USB port for iLok Smart Key not required for Amarra Page 4 soundBlade TV View the Sonic Studio Process tutorial by clicking HERE Sonic Studio Process Highest quality batch processing app 1 1 The Parameters tab for tl e Mac V am Www sonicstudio com By default the Parameters is selected when Sonic Studio Process opens Parameters Window largely consists of 2 areas the Soundfiles area at the top and the Processes area at the bottom 7 Sonic Studio Process Beer Baker aif jf Hi IrT e 197K ai Sample Rate Conversion Sample Rate Conversion Sample Rate 44100 Sample Rate Conversion Target Sample Rate 44100 hz Target File Format WAV Bit Depth 24 Figure 01 Sonic Studio Process showing the Params Window Sonic Studio Process Window SARAMG Format WAV Bit Depth 24 Filter Steep Dither TPDF Sonic HD Triangular Filter Curve Dither Type 1 1 1 Soundfiles Area Beer Drinkers aif 2 00 03 72 1 02 T E alle E 7877 a PET 08 Daugherty Niagra Falls aift 00 1 0 07 05 fm St n m a 7 08 Like a Hurricane a OO OB 20 18 00 14 25 10 Default Output Folder is same folder as input soundfile Figure 02 Soundfile area of the Parameters Window In the Soundfiles area sound f
14. RC calculates its coefficient set at runtime when the converter starts up It s perfect for general SRC Sonic HD High Definition SRC is our new multi stage algorithm The multi stage SRC is based on pre calculated coefficients for each stage It s great for general purpose SRC and is recommend for non integer SRC 96 kHz gt 44 1 kHz or 48 kHz gt 176 4 kHz for example See Chapter 2 Sample Rate Conversion Technical Details below for more information Page 9 Note Regardless of the input bit depth the output soundfile will be 24 bit file This preserves the full dynamic range of your soundfile throughout the conversion process You can use Sonic Studio Process Bit Depth and Dither Type parameters to change the bit depth if necessary 1 1 2 2 Selecting a Filter Curve The heart of the sample rate conversion process 15 the low pass filter which is designed to reject aliases down conversion or images up conversion both of which are detrimental to sound quality The filter s response above cutoff must be very steep if it is to be effective at rejecting these artifacts Very steep filters can introduce audible distortions however Any filter design for sample rate conversion therefore involves trade offs among a number of factors aliasing imaging inband stopband ripple reduced gain at very high frequencies and time smear Each of these factors has effects that can vary with the sonic c
15. d and multiple processes are listed as well first the initial sound file in the Soundfiles list is processed by all processes listed in the Processes list in the order tn which they are listed Be aware that each process 5 performed upon the resulting file of the previous process When all listed processes are performed upon the first listed sound file the following sound file 5 processed with the same processing in the same order This is repeated until all sound files are processed with all listed processes The end result of this is one resulting sound file per process per sound file The following processes are available in Sonic Studio Process 1 1 2 1 Sample Rate Conversion The double precision sample rate algorithms Sonic Studio Process SRC mode provide conversions between each of the commonly used sample rates and produce 24 bit output in all cases which should be dithered to the appropriate release resolution if other than 24 bits The algorithms are designed with careful attention to filter parameters and computation precision in order to preserve sound quality to the highest extent possible Because the multi phase filters needed for the non integer conversions e g 96 kHz 44 1kHz require very large numbers of coefficients and customizing of dsp resources the filters cannot be designed on the fly In order to offer choice in the sound of the filters three versions of each filter are offered Steep Gentle and Gentl
16. e on all types of music Noise Shaped This dither type alters the spectral shape of the error that is introduced by dithering such that the noise power is at a lower level in frequency bands at which noise Is perceived to be more undesirable and at a correspondingly higher level in bands where it is perceived to be less undesirable Since this dither is packed at the higher end of the hearing spectrum this shaping or weighting reduces the audibility of the noise to a degree This dither is recommended for general use Note general triangular PDF dither is preferable Note That with either type of dither the added noise is very small and each dither option acts differently with different types of program material You should experiment with each dither type to achieve the results that you desire conversion process You can use Sonic Studio Process Bit Depth and Dither Note Regardless of the input bit depth the output soundfile will be 24 bit file This preserves the full dynamic range of your soundfile throughout the Type parameters to change the bit depth if necessary Page 11 1 1 3 Processes Area DeCrackle DeCrackle nl ADD PROCESS Ej Clear Process List On Execute Files Process List Parameters DeCrackle Threshold 0 950000 Synthesis Order 150 Process MoNOISE II DeCrackle Parameters Threshold 0 85 0 99 Synthesis Order 150 00 100 700 Execute Queue Wait Run
17. est the characteristics each version are described this section The Sample Rate Conversion SRC process offers Page 8 Eight choices of Target Sample Rates Each Two Sample Rate Converter types Sonic HD preserves the pitch and duration of the original and Classic file 7 44100 hz 48000 hz Y Sonic HD 88200 hz 96000 hz Classic 176400 hz sn 192000 hz Figure 05 Sample Rate Conversion type pull 352800 hz down menu 384000 hz The Default value is Sonic HD See the LEARN Section on the next page Figure 04 Sample Rate Conversion pull down menu showing available target sample rates The Default value is 44100 Hz ThreeTarget File Formats Three Filter Curves AIFF E Steep WAV Gentle CAF Gentlest Figure 06 Target Format pull down menu showing Figure 07 Filter Type pull down menu available target file types The Default value is Steep The Default value WAV See Section 1 1 2 2 Selecting a Filter Curve below Two Bit Depths Word Length Three Dither types l 16 None F 24 Rectangular PDF En Noise Shaped Figure 08 Bit Depth pull down menu showing eT available target bit depths The Default value is 24 bits Figure 09 Dither type pull down menu The Default value is Triangular PDF See Section 1 1 2 3 Selecting a Dither Type below LEARN Classic SRC is the long established Sonic monolithic SRC monolithic meaning single stage The monolithic S
18. finitions Sonic Studio Process is also able to open audio files by dragging and dropping the files into the Parameters window 1 3 2 2 Convert FLAC File to AIFF Navigate to FLAC files and convert them to AIFF format The shift and command keys allow you to select more than one file 1 3 2 6 Convert FLAC Folder to AIFF Navigate to a folder containing FLAC files and convert the folder s contents to AIFF Specify the source folder and a destination folder for the AIFF files 1 3 2 7 Check For Updates Check for updates to Sonic Studio Process Page 16 1 3 2 8 Sonic Studio Website Opens www sonicstudio com into a new web browser window 1 3 2 9 Open Console Log Allows Sonic Studio Process to log information on its operation to the Console Log Use the Console Application to view this log in Utilites Folder 1 3 3 Help Menu Allows access to Sonic Studio Process Help information Sonic Studio Process Help 17 2 0 Sample Rate Conversion Technical Details All rate conversions rely on a relatively simple process in which the source data 15 filtered with low pass filter with bandwidth determined nominally by the Nyquist frequency of the lower of the two frequencies source frequency destination frequency For noninteger conversions the filter is oversampled usually at a high rate to produce a set of coefficients which are then used to filter the data but only at the ou
19. haracteristics of the material sometimes it may be preferrable for example to allow a small amount of aliasing in order to preserve other aspects of signal integrity To provide the most flexibility in tailoring the conversion process to different types of program material Sonic Studio Process SRC offers three different filter choices Steep is a Nyquist filter optimized for maximum alias image rejection Gentle and Gentlest options trade a limited amount of aliasing imaging for reductions in other distortions HINT while the Steep Filter is designed for most SRC your choice of a filter curve for a given sample rate conversion operation should be based on careful audition Gibbs Phenomenon and is a characteristic of all FIR low pass filters Left uncompensated this ripple could cause source material with high frequencies recorded at high levels to become clipped Note The digital filter that Sonic Studio Process SRC uses exhibits a small d amount of amplitude ripple near the cutoff frequency this is known as the For this reason SRC reduces the gain at the input of the conversion by 0 1 dB to avoid clipping Repeatedly converting the same file therefore will gradually reduce its overall level 1 1 2 3 Selecting a Dither Type Dither is an intentionally applied form of noise used to randomize quantization error preventing audible artifacts from being induced when calculating sample rate or bit depth changes No
20. hesis Lowering the Threshold by only 0 05 is enough to make a noticeable difference Page 12 HINT f the Threshold is set too high then there will be some amount of crackle remaining in the program If the Threshold is set too low you may begin to decrackle good audio which could result in low frequency artifacts audible thumps 1 1 3 2 Synthesis Order The Synthesis Order determines the precision of the Decrackler s resynthesis In general the larger this number the cleaner and more artifact free the output The default value of 150 is suitable for the majority of source materials If low frequency thunks occur in the processed output try raising the value of the Synthesis Order to 175 or even 200 However raising the Synthesis Order markedly increases the amount of time required to process the soundfile Synthesis Order should generally be left at 150 unless the process is producing unacceptable numbers of artifacts Paradoxically processing artifacts tend to occur more with clean recordings that have high signal to noise ratios For relatively recent material such as tape recordings from the early 1950s it is common to set the Synthesis Order to 128 For 78s from the 1930s however it is common to set the Synthesis Order to 125 Page 13 1 2 The Queue Manager tab To monitor and manage queued processes the Queue Manager tab offers status information and limited options to influence the queued jobs and tasks being perf
21. iles can be selected and added by Clicking the Open button or Dragging and dropping one or more files from the Finder into this area V HINT With either the Open button or drag and drop multiple sound files can gt be added to the list by selecting all the files you need to work on and adding all 2 to the Sound File list area Note that only uncompressed files WAV AIFF or CAF are supported atthistime Convert MP3 FLAC AAC ALAC or other compressed files to AIFF or WAV before adding to Sonic Studio Process Once a sound file is added it is placed in the Sound File Name list This list displays the file name number of channels duration sample rate word length or bit depth of each file In the Output Folder field the target folder for newly created sound files is specified By default the Output Folder is the same as the input file To select a different Output Folder click on the Set Folder button A standard Mac OS browser opens allowing you to navigate create and or choose the desired destination folder To remove sound files from the list click to select the list entry and delete it by hitting the backspace or delete key clear the list of all sound files click the Clear All button to the lower right of the Sound Files list Page 6 1 1 2 Processes Area Sample Rate Conversion Sample Rate Conversion ADD PROCESS E CLEAR ALL MEM z Overwrite Files Proce
22. ormed Sonic Studio Process m Window Sonic Studio Waiting Jobs 1 Sample Rate Conversion Running Volumes Gl Joe SSLLCDOCS Here Test projex 176 4 and 192k files Beer Drinkers aif Active Jobs 1 Job Sample Rate Conversion Files 1 af 1 Current File Beer Drinkers aif Progress Current File Total Files Processes Figure 72 The Queue Manager tab In the top half of the window all processing jobs in the Queue are listed In the bottom half the active jobs are listed The progress bars below this area show which file is being processes and which process of the total number of processes to be applied is currently being applied To suspend currently running processes click the Pause Resume button The current process is halted and queued processes are held in the queue To resume processing click the Pause Resume button again To abort the current process click the Abort button and the current process will be aborted initiating the next process in the Queue Page 14 1 3 Menus 1 3 1 Sonic Studio Process Menu About Sonic Studio Process Services Hide Sonic Studio Process Hide Others Show All Quit Sonic Studio Process 0 1 3 1 1 About Sonic Studio Process Opens a dialog box describing the version and build numbers of your Sonic Studio Process application Clicking on the dialog box closes it 1 3
23. ples it also prevents images of the input spectrum from appearing in the new wider bandwidth 2 2 3 2 Fractional Ratio Conversion Fractional rate conversion takes advantage of the fact that where the source and output sample rates are not related by a simple integer there is nonetheless a higher clock rate to which both will have an integer relationship This is illustrated in Figure 2 03 Figure 2 03 Fractional Ratio Conversion Here the ratio between clock rate A and intermediate rate B is 1 4 In turn the ratio between clock rate B and rate C is 3 1 Oversampling at clock rate B therefore enables conversion between signals sampled at rate A and those sampled at rate C In practice fractional rate conversion is performed by an FIR lowpass filter which cuts off at the Nyquist frequency of the lower of the two sample rates source or output and is oversampled at some high frequency to which both sample rates have an integer relationship The Nyquist filter prevents aliases down conversion or images up conversion Page 21 Sonic Studio Process User Manual Index AAC Abort Add a Process AIFC AIFF ALAC Amarra Audio Client BWF CAF Classic Clear All Clear Files Clear List on Execute Compressed DeCrackle Execute Filter Filter Curve FLAC Gentle Gentlest 14 16 2 6 16 4 7 12 16 4 7 12 7 9 9 10 9 10 6 16 9 9 10 9 9 10 4 Pagawe rting sound file
24. ss List Parameters Sample Rate Conversion Sample Rate 44100 Format Bit Depth 24 Filter Steep Dither Process Sample Rate Conversion Parameters Execute Target Sample Hate 44100 hz Fi sample Rate Converter Sonic HD Target File Format MEI Ee Steep 4 Queue Wart Run Depth p Di Dither Type Figure 03 Process area of the Parameters Window Once all sound files have been added to the Soundfiles area one or more processes can be applied to each file here in the Processes area An Add a Process menu allows for selection of the desired process es Note that Sample Rate Conversion is the default process for Sonic Studio Process app If you are a soundBlade user and have purchased and installed either our Manual DeClick or NoNOISE II SR option DeCrackle will appear in the Process pull down menu DeCrackle is not available for Amarra users When a process is selected in the space below the Processes area details and available parameters are shown for the selected Process This enables adjustment or selection of further options depending upon the Process selected Processes can be deleted from the processes list by clicking on the process and then hitting the backspace or delete key To clear all processes from the Processes list click the Clear All button to the right of the Processes list Once all necessary processes have been selected and
25. ss application consists of two windows each represented by its own tab in the top right corner of the User Interface The first window is Parameters and is accessed via the PARAMS button In this section sound files can be added and selected for processing processes can be assigned to each file an output folder for processed files can be set and parameters can be defined for each process The second window of the Sonic Studio Process is the Queue Manager and is accessed from the QUE MGR button Once sound files have been assigned a process processes can be managed via the Queue Manager Both windows are discussed tn detail below Licensing amp Installing Launch your iLok License Manager application and download your iLok license for Sonic Studio Process To install Sonic Studio Process please click on the Sonic_Studio_Process pkg installer located in the Extras folder of your soundBlade HD or SE application folder Follow the on screen instructions to install your software Sonic Studio Process is an option for soundBlade LE Note that the Sonic Studio Process app that s included with Amarra has a limited feature set Not all parameters listed in this document are available DeCrackle is not available for Amarra users Operating system requirements At a minimum Sonic Studio Process requires the following Apple Macintosh Intel 2 6 GHz minimum or faster preferred 4 GB RAM minimum OS
26. tput rate determined by the destination frequency The upconversion and downconversion factors are defined by the equation T where the integers M L provide the smallest whole integers relating the new and old sample periods he oversampling or upconversion rate is M T The ratios 96 44 1 and 44 1 96 require high oversampling M 147 and M 320 respectively and hence substantially more complicated implementation than the simple decimation interpolation ratios 88 2 44 1 44 1 88 2 1 and M 2 respectively However the conversions are based on the same low pass filters and as long as the same filter design approach is used and high precision is maintained in the computations the sonic performance should be comparable LEARN The coefficient technique for Classic monolithic SRC is called windowed sinc meaning that during calculation filters are used to separate one band of frequencies from another The coefficient technique for Sonic HD multi stage SRC is optimized Mean Squared Error Mean Squared Error is a way to quantify the difference between values implied by an estimator and the true values of the quantity being estimated In this case multi stage means that the re sampling can be done tn incremental stages For example a conversion from 44 1 to 48 is broken down into two stages of 8 7 and 20 21 so that 147 samples in yield 160 samples out multiply by 3 to get 441 in gt 480 out There
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