DTS Test Procedure (DVD Player)
Contents
1. mm sy Gonavo BEE Ere oan T Output Input Transmit C AC Bt A amp B Receive A Receive B em Consumer Professional Mode ZEN Mode AudioMode C DataMode Udo Mode MMEM Audio Mode ERE C Copyright Non Copyrigh Copyright Ei Copyright Copyright No pre emph 50 15ps Emphasis No pre emph Emphasis INo pre emph Steel fd Channel Channel Mode 2 Channel Channel Mode WEM Category Code STEM Category Code iE Category Code General X Source Num Ei Source Num Dontcae Source Num Don tcare v Channel Num EREMO Channel Num ER Channel Num Dontcae Sample Freq EGE 9 Sample Freq TRETEN Sample Feg 441kHz v Format XLR is Format Optical Y Sample Rate OSR 48 0000 kHz Sample Rate ISR EEE Connector Connect Voltage 5 000 Vpp Voltage 3 024 Vpp NUS annectar Il Resolution 24 Bits j Resolution 24 Bits v Re Sut Ba PreE mphasis Off DeEmphasis Of Scale Freq by Output Hate Y Scale Freq by Meas Input Rate Rate Ref 48 0000 kHz Channel Channel B Mode CableSim I Sendinvaii M HME o Rise Fall Time Interfering Noise 24 20 16 12 8 4 sg 5 56 nee ca 000 PP B maar rnc CCS SIS SESS SS Active Sits C DataBits GE SISSE CE SI ECT S C C dC C d s Clock Accuracy HRANI Clock Accuracy MEN2. Common Mode Sine Error lags hA Che Amplitude Frequency cenfidence lock coding parity f invalid invalid Clock Accuracy Leva 2 x sample ser 3500 Vpp 20 0000 kHz Sample rate Freq Jitter Generation Jitter Measurement r is 44 1 f ott EQ Curve jio nsec C Ul Sec IS s Or Amplitude Frequency Status Bis CD 48 for nono ur w roseon kHe v rw vo0Hz to 100kHz C Pk Avg l H8 1ro 4 DVD L 15 16 17 18 19 20 21 22 29 ot co oo oo oo oo oo oo oo oo oo oo oo oo oo o0 00 00 00 00 00 00 00 00 Analyzer Ch A B Receive A Reading Invalid Transmit B 03 o0 00 00 00 00 OO 00 00 OO 00 OO 00 00 OO 00 OO OO 00 OO OO OO 00 OO Receive B APWIN V 2 20 For Help press F1 APWIN Digital Out test screen 3 Play the tracks again one by one that were played in steps 6 and 8 above 4 Inthe APWIN screen compare AP Analyzer values with those in the AP section of the report form reproduced in the next figure Analyzer Reading Audio Modes oample Freq Ch AJB Invalid AP section of Report Form typical DO NOT COPY Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 3 3 2 DTS DVD 1 Insert DTS DVD Test Disc Vol 1 Ver2 1 into the DVD player being tested 2 The DVD player receiver unit must be connected to a video monitor or television in order to view the DVD menu 3 3 2 1 Analyzing Header Information using Header exe 1 Inthe DVD player s menu sele
3. 1 7 d 36 3 30 4 z EE 9 6 3 sinned 48000 16 bit Stereo 003800 S07E249MB free Digital Out Audio Sample Viewed in CoolEdit 5 Regarding the 754 kbps sample enlarge view to see stuffing bits that must be there shown next figure DO NOT COPY Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 If stuffing bits is not familiar to you see DTS Decoder Licensee Manual topic DTS DVD V and DVD A Video Zone where stuffing bits is described The Decoder Licensee Manual is not supplied with this test procedure Note The 1509 kbps sample also has stuffing bits but they are too small to be visible GE Untitled Cool Edit Pro i RIET File Edit View Transform Generate Analyze Favorites Options Window Help The blank area is a stuffing bit or zero padding Se 0 01 418 0 01 534 000114 M9 View 0 01 418 0 01 534 0 00 114 15 12 9 5 3 Stopped 48000 16 bit Stereo D 03 800 30762 48 MB free View enlarged to clearly show stuffing bits If the stuffing bits or 0 padding is not present make a notation in the Findings Observations section of the test report form 6 Save the file as lt filename gt wav and clear CoolEdit Return to step 5 and repeat for the other track 7 Run Header exe with the wav file A txt file will result 8 Open the txt file in Windows Notepad
4. DTS Certification Test Procedure for DVD Player For DTS Certification of Consumer Products Release Version 1 1 Effective Date June 2003 Document 9305E74500V1 1 Digital Theater Systems Inc Consumer Products Division 5171 Clareton Drive Agoura Hills CA 91301 USA eits DTS Certification Test Procedure DVD Player Version 1 1 Copyright Info DTS Certification Test Procedure for DVD Receiver version 1 1 Do Not Duplicate Copyright O 2003 Digital Theater Systems Inc Unauthorized duplication is a violation of State Federal and International laws This publication is copyrighted and all rights are reserved by Digital Theater Systems Inc No part of this publication may be reproduced photocopied stored on a retrieval system translated or transmitted 1n any form or by any means electronic or otherwise without the express prior written permission of Digital Theater Systems Inc The content of this publication is subject to change without notice and does not represent a commitment on the part of Digital Theater Systems Inc Every effort has been made to ensure the accuracy of this publication However due to ongoing improvements and revisions Digital Theater Systems Inc cannot guarantee the accuracy of printed material after date of publication nor can it accept responsibility for errors or omissions Digital Theater Systems Inc will publish updates and revisions to this publication as needed Conformity
5. For Help press F1 Digital Out DVD in APWIN DO NOT COPY Document 9305E74500V1 1 P reu DTS Certification Test Procedure DVD Player Version 1 1 4 DTS Logos Trademark Acknowledgment The test unit and its accompanying user s manual must meet all DTS logos trademark acknowledgement and disclaimer clause requirements specified in DTS Style Guide and Logo Usage and DTS Trademark Notice When a unit is submitted to DTS for certification it will be inspected for compliance with these requirements DO NOT COPY Document 9305E74500V1 1
6. to view and check header information With DVD digital output the IEC Preamble information is required as well as the Bitstream Header info and the AP info Compare this information to that in the Report Form shown on page 10 DO NOT COPY Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 F dvdi tet Notepad File Edit Format Help prs Bit stream Header Information 4 4 FFes 01l 1005 For DVD all info is required ww IEC Preamble Information 44 T8r2 4eLt 0gb lf7 Typical DVD header info 9 Repeat for the other wav file 3 3 2 2 Analyzing Header Information using AP 1 Next connect the Digital Out of the test unit to the digital input of Audio Precision Make sure APWIN is configured to Sample Rate of 48 KHz 2 Play the DVD tracks see step 4 on page 13 You will play one track at a time 3 Check the AP Analyzer info in APWIN next figure Compare to AP section of the test report form shown page 12 and mark discrepancies Audio Precision APWIN DigitalOut at2c File Edit View Panels Sweep Compute Procedure Utilities Window Help Ole tale Sita i Eie a Receive A Receive B Format KLR bal z Zn 110 Ohms zl Consumer C ET Mode Ea Mode aay Sample Rate OSR 48 0000 kHz Sample Rate ISR 47 9998 KHz Connector Ades Made Y Da Mads Audio Mode BERE Audio Mode TREE Voltage 000 Vp Voltage EAI Pielke
7. ieu o rex e e Ues 10 zos DPE DPED MESSIS 10 o BDD D aea E E E 10 3 3 1 1 Analyzing Header Information using Header exe eeeeseeessese 10 3 3 1 2 Analyzing Header Information using AP esee 11 SS MO TOV ea E N E A O E 13 3 3 2 1 Analyzing Header Information using Header exe seeeeeeesssee 13 3 3 2 2 Analyzing Header Information using AP sese 15 4 DTS LOGOS TRADEMARK ACKNOWLEDGMENT 1 Lee eere enne nnn 16 DO NOT COPY dio Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 DTS Certification Test Procedure DVD Player This procedure is used for certifying DVD Player equipment meets DTS standards as identified in DTS CMLA Decoder Certification Manual version 3 0 These instructions assume that you know how to run Audio Precision tests and you are familiar with audio performance testing procedures DVD units vary in their design DTS uses the digital input to the unit under test if it is available Those that do not have digital inputs will be tested using the DTS CD item a below as the source for the test streams Those with digital input should be tested to the AV Receiver procedure If the unit has digital output capabilities then you must perform the header portion to capture header information See 3 3 DTS Digital Out page 10 If the unit has nei
8. the line Declare Function sndPlaySoundA Lib c WINNI SYSTEM32 WINMM DLL ByVal lpszSoundName ByVal ValueFlags As Long As Long DO NOT COPY Document 9305E74500V1 1 P reu DTS Certification Test Procedure DVD Player Version 1 1 3 Test Procedure Please refer to Section 4 1 in the DTS CMLA Decoder Certification Manual for hardware setup 3 1 DTS 5 1 Digital Surround The dvd player51 apb test procedure is for DTS 5 1 Digital Surround in DVD Players that have NO digital input capability If the unit under test HAS digital input then refer to the AV Receiver test procedure 3 1 1 Configuration setup The following steps are needed to obtain the proper AP plots and to ensure the plots are identified correctly as to the unit that was tested 1 In APWIN open the Utilities menu and select Configuration The Configuration dialog box will display z General Hardware Configure Filters Log Graph General Options Prompt to Save Test when a test is closed Load LAST AT on startup v Save LAST AT on exit Keep all readings active during sweeps Display data in graph on test open w Reprocess FFT data on zoom European Broadcast option installed Do not load panels on Open Test Auto Enter for Numeric Fields Set Sample Rate when loading generator waveforms Company Name prs Test Cancel Help Utilities Configuration General 2 Inthe General Company Name field ent
9. with these standards does not constitute DTS certification No product is certified until it has passed DTS testing and DTS has issued a certification statement DTS and the DTS Digital Surround logo are trademarks of Digital Theater Systems Inc Neo 6 is a trademark of Digital Theater Systems Inc Document No 9305E74500V 1 1 June 2003 DO NOT COPY EB Document 9305E74500V1 1 eits DTS Certification Test Procedure DVD Player Version 1 1 Contents 1 REQUIRED MATERIALS isis uxietuziaecsadvsiwetzvddngces usc evavIaPucsR d re ird t Gad kuvidedE s xUsv a vw e a bec R RS ved RE tds 1 2 INSTALLATION OF AP TESTS AND AP PROCEDURES eere rene 2 3 TESI 2 19 6 p P I icc 4 Su OS Wa Surround eerie 1915595902 8665002309968 455 4 98 92 8 089020 8000609 arrar o E aE p arenae ME UEM ESI ieia 4 Dl oni ouratol Sells iei eq anmedheie aad MERI ND E E REES 4 24 2 Output Relerence LeVel aieo poaae Eaa po ADR PET EEUU EEn E dvcSUEU PME R Enea EUAE 6 3 9 RAP Wiest Procedur ac ooi it eue eid devotos Pre bet in VD I INE EA 7 314 Archive the Test D ata F1l68 2 eerie e doa bno eret im rese innii eU be Fata be do rue dant nai aiena ee Fan eei do RD ie 8 SAD FPxamine ihe Test REDON vs on52550990005000 30 0090230 999 260 202920008900 0 0509 0 080 920006880000 0900000 00929 28 658505 9 3 2 Compatibility Testing and Listening Evaluation erret tore cope o Eo Uo epe e pne to sa Sena dee inaa PO
10. F Connector Il PURGE SEE Copyright EE Copyright Ee Resolution 24 Bits Resolution 4 Bits Ref Dut 19 99 usec gt No pre emph 50 15us Emphasis TEES Emphasis TEES PreE mphasis Df v DeEmphasis ot e 2Chanel C 4Channe Channel Mode ERE Channel Mode ERE Scale Freq Scale Freq by Meas Input Rate Rate Ref 48 0000 kHz Category Code CD Player Category Code CD Player Channel A Channel B Mode Category Code General Source Num EERE Source Num IEEE A a 1 2 Pk Pk couts Num Dontcare gt Channel Num ERE Channel Num TTE Rise Fall Time Interfering Noise a ee R e gt Active Bits Channel Num Don t care gt Sample Freq ERN Sample Freq IRE m 55 ccn JOO Ver p PooReooeooEOoEooEESEEeEE C Data Bits SampeFreg 441kHtz v Clock Accuracy PN Clock Accuracy TEN ee ee gph cos lock codin arit ved eid Clock Accuracy reve xi pef 5900 vep aok 2 d Jitter Generation Jitter Measurement Off v EQ Curve a Home AT C 6s Amplitude Frequency Jitter R Status Bits fo 000 ul v 1 00000 kHz z Bw 700Hz to 100kHz C Pk Avg eal es Ee Se TISSUSUCIDIITI2 0149719 15915 127 318 I9 2O0SE X e Transmit A 4 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 O00 00 OO OO OO OO oe ss 02 oo oo oo oo oo oo oo oo 90 o0 o0 oo oo oo oo 90 oo oo oo 00 Transmit B 03 00 00 00 00 00 00 OO 00 O00 OO 00 O00 OO OO 00 OO OO oO OO OO OO OO OO Receive B
11. ayer 2ch doc 126KB Microsoft Word x q Fc BA DVD Player 5 1ch doc 194KB Microsoft Word 2 Ca zami F DvD Player 5 1ch 5pkr doc 259KB Microsoft Word a Dell il E OVD Player Digital Out doc 72 KB Microsoft Word BHL DISCOVER EH DMI Az Documents and Settings Copy report pos template from EM UIES Test Reports Eg DTS folder BH Dts 7 prs 96 Then paste it oo in Data folder H O Old AP Tests 2 be StreamChecker Copy the report template from Test Reports to Data folder DO NOT COPY 9 Document 9305E74500V1 1 P reu DTS Certification Test Procedure DVD Player Version 1 1 3 2 Compatibility Testing and Listening Evaluation The compatibility testing will show whether the unit under test is capable of successfully detecting and decoding bit streams encoded in various DTS modes at different sampling rates frame sizes and bit rates You will play tracks 36 37 38 and 39 of the DTS Test Streams for DVD Players CD The results obtained in this section will be entered into the Compatibility Evaluation portion of the test report form COMPATIBILITY EVALUATION Erroneous Bitstream MEHREREN ttt nnn Tracksae n DT5S 5 1 MIPS Iniensive Track3 Te vt DTS 5 1 Detection Track38 amp Trac k39 44 1 kHz PCM lt gt DTS 44 1EHz 1 4E bit i ie Compatibility Evaluation section of Test Report form typical For details refer to the Certification manual section 6 Compatibil
12. cation software Syntrillium Software www syntrillium com or equivalent e Marian Marc II digital soundcard Marian Digital Audio Electronics www marian de or equivalent Note Before proceeding you should have APWIN Ver2 20 or later the AP APIB card CoolEdit Pro or equivalent and the digital soundcard already installed on your PC DO NOT COPY Document 9305E74500V1 1 Pred DTS Certification Test Procedure DVD Player Version 1 1 2 Installation of AP tests and AP procedures 1 Extract the AP Test zip file into the C DTS subdirectory while maintaining the directory structure as shown below File Edit View Favorites Tools Help Back p search Ay Folders cif History ux ou REEL Address 71 ciiprsyee Test oo Folders Modified eof 9 ADOBEAPP C Data 3 13 2003 4 53 PM H E Apwin C Test Report 3 13 2003 4 56 PM H BTMAGIC PO M2 Digitalout atzc 56 KB 12 2 2002 12 01 PM EIL CDL B AP OTS 96 apb 26KB 2 3 2003 10 30 AM BI Dell M2 o75 51 apb SKB 1 27 2003 4 54 PM H Documents and Settings 2 dts 51 spkr apb 19KB 1 17 2003 12 23 PM EC DTS M2 075 96 spk apb ISKB 1 15 2003 7 26 AM ES 2 dts es apb 25 KB 2 13 2003 1 32 PM E C Data A dts es spkr apb SKB 1 17 2003 12 24 PM M2 dvd player2ch apb 12KB 2 1 2003 4 54 PM G2 dvd player51 apb SIKB 2 52003 11 15 AM M2 Freqhesp at2c S KB 11f ofeode 7 22 PM Lg Test Report G2 Freqhesp 96k at2c 57KB 11 30 2002 1 51 AM B Test Streams MB Level at
13. ct the audio format DTS 5 1 2 In your recording software DTS uses CoolEdit Pro choose the proper sampling rate 48 kbps and prepare to record In the CoolEdit utility make sure the sample rate is set to 48 KHz for DVD source 4 Play and capture 3 to 4 seconds of the following DTS bitstreams that are on the DVD and save them as wav files such as dvdl wav and dvd2 wav Be sure to clear CoolEdit after each capture save so you don t overwrite your files The two DTS DVD bitstreams are included on the DTS DVD Test Disc Vol 1 Ver 2 1 e DTS DVD 754 kbps e DTS DVD 1509 kbps In CoolEdit it should appear similar to the example below a Untitled Cool Edit Pro i l x Fie Edit View Transform Generate Analyze Favorites Options Window Help Apit o 8 5 5 8 Ii an S If pa i eee t a f 30000 25000 20000 15000 10000 5000 0 5000 10000 15000 20000 25000 30000 i i L 30000 i i i i i i 25000 20000 15000 0000 000 l Length Sel 0 00 000 0 00 000 24 25 26 27 View 0 00 000 0 03 800 0 03 800 KERRE ETE nr UN Noemi Ec meet Gee young Nae cua perro aad A EEA ERRET gere paper oy Soman peces orsa pesce Ronnie hms 0 1 D 0 6 0 7 0 8 0 9 0 T 3 E 14 1 6 1 7 1 8 1 9 2 0 2i 2 2 2 3 a gt Lu Ole 0 00 000 L L 3 27 2 E 3 7 13 Y 1 ooo 1T
14. dow will display Set Output Reference Level X Enter Qutputlevel measured on LF channel ie 1 Cancel Set Output Reference Level 4 Enter the output level measured on LF channel as a decimal expression in whole Volts that is 1f the measurement in step 6 on page 7 was 2 1 V you enter 2 1 here Click OK to continue 5 The system will prompt you to click OK then Play Track 2 In the APWIN screen click OK then using the DVD unit s remote control play track 2 The first test of the procedure will run displaying the graphic result on the screen If the test does not end automatically you will need to press the Stop button When finished a Confirmation window will display x Do vau want to retest v for ves or Enter for na Cancel Retest Confirmation 6 You have 2 choices now 66 99 Type y and click OK if you wish to repeat the same test Just click OK to proceed to the next test When you choose to repeat the test the system will clear the test results and start the test over At the end of the retest the same Confirmation window will display again DO NOT COPY Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 A Caution If you do not copy the test results into a different location they will be overwritten the next time you run these tests 3 1 5 Examine the Test Report DTS has created a test report template that has bui
15. er the model number of the unit under test 3 Click the Graph tab then uncheck all the boxes for Trace Colors DO NOT COPY Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 3 1 2 Output Reference Level Before running the automated test procedure you will need to set up the output reference level as follows WI You will need to set up the output reference level again when performing a speaker test but not when performing a Neo 6 or DTS ES test on the same unit 1 If possible on the unit being tested use the Audio Setup 5 1 Channel or equivalent menu system to locate and change these settings e Set all speakers to LARGE e Set all speakers and subwoofer ON e Set the surround mode to Direct that is turn off all post processing matrix surround or anything that might affect the coloring of the signal e Set the Trim Level to O dB on all channels e Turn off Delay Time if present and Dolby if present Some DVD Player units do not have a means of changing these settings 2 Play track 1 on the CD 3 In APWIN load the Level at2c test in the subdirectory CADTS Test AP Test 4 Make sure 1 for LF channel is entered in the Switcher Input ChA box see figure below Audio Precision SP WIN Level at2c File Edit View Panels Sweep Compute Procedure Utilities Window Helm Dema aa aa pie zy Resa 5b below E ES A E oS 652 i t emn o e
16. ity Testing and Listening Evaluation page 52 of that manual 3 3 DTS Digital Out Testing 3 3 1 DTS CD 3 3 1 1 Analyzing Header Information using Header exe This portion is completed only if the unit under test has DTS Digital Out capabilities The Header information section of the test report form is near the top of the form But the header information can be extracted at any point before or after the test procedures Dis Digital Output 14 Bit CD 1536khps D VD Analog Output II Jor white H for Lef amp Left A T T Left A Noise A for A udin 1 Right A i Right amp cu d ight A Right amp t 785800 20123 F Pes ls DdBFS v dBFS w I2dBFS w dBFSj v OdBFS v hudio Modes Auction w Audio w Audio v Daa w Data w Sample Frege Mik w 441kj ada ChA BInvaidi om e omo e jv Digital Output section of Test Report form typical AN 768kbps 754kbps and 1536kbps 1509kbps can be used interchangeably 768kbps and 1536kbps are the transmitted bit rates where as the 754kbps and 1509kbps are the encoded bit rates Refer to section 5 1 DTS Digital Out in the DTS CMLA Decoder Certification Manual The following procedure is mostly copied from that manual 1 Create a folder under DTS named Digital Out DTS Digital Out 2 Copy the header exe file in the AP Test folder into the DTS Digital Out folder Refer to section 5 1 2 Bitstream Analysi
17. lt in links to the test results Using Windows Explorer navigate to the DTS AP Tests Test Reports folder and locate the report template that is appropriate for the unit you have finished testing See the next figure below Copy the report template from the Test Reports folder to the Data folder Then give it a new filename Open the report template and from the File menu select Save As and change the filename to the make and model of the unit that was tested or to some other meaningful filename This report contains links to the actual test results in the subfolders inside the Data folder This report with all the test plots comprises the major part of what DTS will return to you after DTS completes its own testing of your equipment EJ Test Reports File Edit View Favorites Tools Help Back j search f Folders CHstery WS GS X wey EH Address CADTSYAAP Tests 2003 02 101Test Reports Go Type Folders refi Desktop fA DTS 51 DVD Rcevr Dig Out doc 275 KB Microsoft Word E My Documents PA oTs 51 OVD Receiver doc 202 KB Microsoft Word E45 My Computer PA DT5 51 doc 206 KB Microsoft Word EE 315 Floppy A M DT5 51 Spkr doc 230 KB Microsoft Word Ebggg Local Disk C Pa DTS E5 doc 306 KB Microsoft Word BH BA OTS E5 96 doc 365 KB Microsoft Word BA DT5 E5 96 Spkr doc 408 KB Microsoft Word BA DTS E5 Spkr doc 334 KB Microsoft Word a BA OVD Pl
18. s murem BRI E T TE d E p Data 1 Jani Level pl Output f B independent from amp NU Top x24 998 dBr A Autoscale C B All outputs driven A Off F Battam odd dBr A C Log amp Lin C B All outputs driven except seleckaa io A Freq 29 9850 Hz Dive 5 Auto Lirnit Ch Alo n ao Data ze d Top 1 820 Y jC amp utascale Bottom 18 20 uv C Logt Lin Press F9 to v Auto Range DisS Suto Limite i display output De auc m RMs m BP BRFIrFieq B Sue 1 eh A Input E ee as levels kz Bw lt 10 Hz 30 kHz Sweep Track start Log Lin Logi Lin Fitr None Stop 8 Divs Auto References Freg 1 00000 kHz Steps F5 dBr amp 219 7 mv Weatts 8 000 Oh Press FA F M 0 194 dBrA Lr stereo Sweep Go 84 122 dBr A dBrB 0 000 v sm e0n0 Oh eo o set 84 765 dBr A Sweep completed APWIN Level Adjustment c 5 For DVD Players with fixed output do step 5 a For players with variable output do step 5 b a For DVD Players with fixed output record the voltage in the Channel A Level meter This should be about 100 mV On a piece of paper record the reference level in Vrms For example 100 2 mVrms should be recorded as 0 1002 DO NOT COPY 6 Document 9305E74500V1 1 P reu DTS Certification Test Procedure DVD Player Version 1 1 b For DVD Players with variable output adjust the Master Vol
19. s using Audio Precision in the DTS CMLA Decoder Certification Manual 3 Connect the digital output of the DVD player to the digital input of the soundcard in your computer DO NOT COPY Document 9305E74500V1 1 P reu DTS Certification Test Procedure DVD Player Version 1 1 4 Also check and adjust your soundcard to match the correct digital input type Open up your soundcard control panel and check the digital input setting Make sure you are receiving signal before you start recording 1 Open the CoolEdit utility and make sure the sample rate is set to 44 1 kHz for CD source 2 Play and capture 3 to 4 seconds of the following DTS bitstreams that are on the CD and save them 29 66 as wav files such as cdl wav cd2 wav and cd3 wav Be sure to clear CoolEdit after each capture save so you don t overwrite your files W The three DTS CD bitstreams are included on the DTS Test Streams for DVD Players CD Ver Zc e Track 33 DTS CD 1024 framesize 14 bit encoded e Track 34 DTS CD 1024 framesize 16 bit encoded e Track 35 DTS CD 512 framesize 14 bit encoded 3 Run the Header exe for each of the above wav files by executing the following command in the Windows Command Prompt window Header lt filename gt enter 4 Once the program is finished executing it will generate a text file listing the headers embedded in the bitstreams Open the txt file using Windows Notepad or equivalent See ne
20. ther digital input nor digital output you run only the CD procedure This test procedure reflects the methodology used by DTS Certification test technicians The tools used by DTS may be somewhat different from the tools available to you to implement these procedures For example when the test procedure calls for CoolEdit to be opened or configured please substitute your own audio recording software 1 Required Materials The following items are provided by DTS If you are missing anything please contact the DTS Certification Department in California at 1 818 706 3525 or via e mail at dtscertification 9 dtsonline com a DTS Test Streams for DVD Players CD ver 2 2 Use this if the DVD Receiver under test does NOT have digital input b DTS DVD Test Disc Vol 1 Ver2 1 NTSC or PAL Use for listening tests on DVD players c AP Test zip files containing AP Tests atc2 AP Test Procedures apb and test reports doc This Zip file can be downloaded from DTS FTP site or sent to you via e mail d DTS CMLA Decoder Certification Manual ver 3 0 e DTS Style Guide and Logo Usage f DTS Trademark Notice These items are needed but not provided by DTS e PC with Microsoft Windows 2000 e AP System II Cascade Plus Audio Precision http audioprecision com This unit comes with APWIN Ver 2 2 or later software and AP APIB card that installs into your computer e APSWR 2122F switcher Audio Precision e CoolEdit Pro appli
21. ume to obtain about 100 mV in the Analog Analyzer Ch A Level meter On a piece of paper record the reference level in Vrms For example 100 2 mVrms should be recorded as 0 1002 Also record the Master Volume setting for example 39 5dB from the unit under test AN For DVD Receivers with more than 100 Watts channel rated power then adjust for 1 Watt If it can handle less than 100 Watts channel rated power adjust the Master Volume to obtain Pmax 100 where Pmax is the maximum rated power per channel For example a DVD Receiver with 50 Watts rated power would be adjusted to 0 5 Watt 6 Press F4 to set the dBrA reference voltage 7 Press F9 to initiate the test and display the output levels on all channels in the Data Editor panel Make sure the output levels meet the criteria specified in the Certification Manual section 5 2 3 3 1 3 Run AP Test Procedure 1 Make sure CoolEdit is NOT still playing the test stream 2 In APWIN open the File Open Procedure menu and select the dvd player51 apb procedure in the folder C DTS Test AP Test Note The above test is used for units that do NOT have digital input capability If the unit under test HAS digital input use the dts 51 apb test procedure 3 Open the Procedure menu and select Run to start the testing A prompt will display reminding you to first do the things listed in Configuration Setup above Click OK to continue The Set Output Reference Level data entry win
22. xt figure Verify that the bitstream header information matches that shown in the Digital Output section of the test report page 10 Bjcditnt Notepad o File Edit Format Help 3583 Compare these with the report form 16 2 TEC Preamble Information www lfff 2600 DOQT eu Header info text file for DTS CD 1024 framesize 14 bit encoded The IEC Preamble Information in the text file shown above is NOT required for a CD file 5 Compare the header info with that in the Digital Output section of the report form on page 10 Mark any noted discrepancies on the Report Form 6 Repeat steps 7 through 9 for the other 2 files cd2 wav cd3 wav 3 3 1 2 Analyzing Header Information using AP 1 Next the Digital Out test will be run in APWIN Connect the digital out from the unit under test to the Audio Precision digital input DO NOT COPY Document 9305E74500V1 1 dts DTS Certification Test Procedure DVD Player Version 1 1 2 In the APWIN screen open the Digital Out test DigitalOut at2c Check and adjust the digital input configuration Input Format to match the actual type of input format from the unit under test See next figure Also verify the Input Sample Rate is correct 44 1 kHz for CD samples 48 kHz for DVD samples Audio Precision APWIN DigitalOut at2c File Edit View Panels Sweep Compute Procedure Utilities Window Help Djalma as eje ale nt format E Hms eo e eo io vr H
23. ze 57KB 1 2 2003 6 46 PM H E GWarchive Beas apb 49KB 2 10 2003 11 05 AM Eg Hau 2 spectrum atze 96 KB 12 23 2002 12 40 E73 Install M2 spectrum 96k atzc 97 KB lef2esfeo0 12 41 amp 7 KPCMS Ai THOvsamp at2c amp DKB 12 3 2002 6 00 PM H E Movall AE THOvsFreq atzc SOKB 2 3002 6 00 PM PO EC Program Files Ui waveForm at2c 428 KB 2 10 2003 10 53 AM 0 BM SPECLAB 20 objectis Disk Free space 1 91 GB 1 17 MB My Computer a This table lists the AP test procedures for DVD Players provided in the AP_Test zip file Table 1 AP Test Procedures for DVD Players dvd player2ch apb tests for DTS 2 channel outputs DVD player dvd player51 apb tests for DTS 5 1 channel outputs DVD player 2 Each of the AP procedures apb contains a PLAYWAVE function that is used for playing wav files through the digital soundcard This function has been setup to run correctly under Windows 2000 operating system If you are using Windows 2000 please go to section 3 Test Procedure The following changes to the AP procedures are needed for the PLAYWAVE function to run properly under Windows 98 In this example we are modifying the file dts 51 apb a Uncomment the following line by removing the quotation mark at the beginning of the line Declare Function sndPlaySoundA Lib c WINDOWS SYSTEM WINMM DLL ByVal lpszSoundName ByVal ValueFlags As Long As Long b Comment out the following line by inserting a quotation mark at the beginning of
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