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2nd October 2010 23:14 #1
PCM passthrough SPDIF ? ( AC3 DTS)
, ( ). . , Analog Devices AD1988B @ Intel 82801IB ICH9 - High Definition Audio Controller. . AC3 DTS passthrough, PCM , . (Foobar2000, Zoom Player AC3 filter ffdshow, WMP), , (volume ).
( - Foobar2000) . - PCM, .
- : Zoom Palyer ffdshow , volume . wav. DTS . DTS , . 5-6 , .
Windows 7 64bit
PCM , FLAC. 50 ." , . ."
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2nd October 2010 23:49 #2Modderhead
Join Date: Nov:2005
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Posts: 4,469
Kernel Streaming Foobar.
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3rd October 2010 00:55 #3
. device list. Windows 7 :
"This component was originally written for Windows 2000 and Windows XP. It is not guaranteed to cooperate with newer versions of Windows. Kernel Streaming is known to work on certain Windows Vista and Windows 7 configurations, but not with devices having WaveRT drivers such as High Definition Audio Devices integrated with newer motherboards - such devices simply won't be shown on foobar2000's output device list as available KS devices."" , . ."
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3rd October 2010 09:57 #4
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3rd October 2010 10:27 #5
DTS , DVD 48kHz, DTS Audio CD 44.1
44.1 kHz wav 44.1 16 . WASAPI Foobar, . HDMI, SPDIF. Denon AVR-2106 HDMI. HD , , (bit-perfect). , ." , . ."
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3rd October 2010 10:30 #6
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3rd October 2010 10:39 #7
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3rd October 2010 10:43 #8
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3rd October 2010 11:11 #9
ASIO .
PotPlayer, ffdshow. DTS , . ( ?) . DTS AC3 , Passthrough DTS AC3. PCM , ...
, . CD, ( ),
" , . ."
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3rd October 2010 12:40 #10
. , AC3 DTS . PCM .
, DTS... . DTS AC3 PotPlayer . "SPDIF Out" "DirectSound: SPDIF Out" AudioRenderer. , "Build-in Audio processing filter setting" "Filter Control". "normalizer"- .., . AC3, DTS , SPDIF- .
. . , , SPDIF- .| Aorus X570 Master | Ryzen 9 5900X | Hellhound 7900XT | G.SKILL 32GB DDR4 3800 CL16 | Enermax Galaxy 1000W | SSD Corsair MP510 960GB & WD-RE3 2 x 1TB RAID0 | Pioneer BDR-209EBK | Creative X-Fi Titanium Fatal1ty & GigaWorks S750 | ViewSonic VX3276-2K-MHD |
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3rd October 2010 15:17 #11
PCM , DTS PCM. , . , DTS . ? DTS, . DTS DVD, passthrough, PCM, .
, , volume SPDIF. passthrough, . ." , . ."
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3rd October 2010 15:29 #12
Creative AC3/DTS SPDIF- PotPlayer KMPlayer. , , .
PCM SPDIF- AC3Filter . . :
SPDIF-as-PCM trick
Sound card tricking may solve problems number 3 and 4. Since SPDIF data is sent instead if PCM data we can trick the sound card and say that we want not to transmit PCM data, but send compressed stream instead. This is controlled by Output SPDIF as PCM option.
However, this trick works only when sound card does not alter our data and transmits it bit-by-bit directly to the SPDIF output:
Volume settings in both sound card mixer and player must be at maximum level. Otherwise, sound card applies gain to our compressed stream and breaks it.
It must be no other sound playing. Otherwise, sound card will mix PCM and compressed data what finally leads to destruction of compressed data structure. Therefore, you must disable any background music. Any sound during movie playback (like ICQ notifications or other things of that kind) will temporarily break normal playback and produce loud noise.
Sound card must truly support the given sample rate. Many sound cards support only 48 kHz and do sample rate conversion for all sounds with other sample rates. Sample rate conversion like any other manipulation breaks compressed sound stream.
Filter cannot control the first two conditions so you must set volume and disable all background sounds manually. But filter may verify sample rate and prohibit SPDIF transmissions with incorrect sample rates (thus protecting you from the loud noise caused by broken compressed stream and eliminating the need to enable/disable SPDIF each time for movies with different sample rates).| Aorus X570 Master | Ryzen 9 5900X | Hellhound 7900XT | G.SKILL 32GB DDR4 3800 CL16 | Enermax Galaxy 1000W | SSD Corsair MP510 960GB & WD-RE3 2 x 1TB RAID0 | Pioneer BDR-209EBK | Creative X-Fi Titanium Fatal1ty & GigaWorks S750 | ViewSonic VX3276-2K-MHD |
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3rd October 2010 16:04 #13
AC3filter, - PCM, AC3 . , PCM .
7 ." , . ."
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3rd October 2010 18:42 #14
wav dts ,
. , , dts-wav.
GA-Z87X-SLI; i5-4460, 2x8 HyperX; Asus 1060 Strix; Adata SP600+WD1001FALS+WD7500AAKS; CMPSU-650TXEU




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