Wanted: volunteers with s/pdif and DTS/DD decoder!

Symphy · 2007-11-14, 23:05

Hi everyone!

Working on my ASIO music player plugin, i'm investigating possibilities to provide better support for DTS/DD passthrough for My Music. However, i don't own an external decoder myself, so i'd like to ask ppl who have to do a little test for me. Implementing my new plan in the plugin is gonna be some work so i'd like to know if it works before doing a lot of work for nothing

Here is a little testprogram spdiftest.zip, that should be able to play a DTS/DD encoded wav over s/pdif. Usage is simple:

Unzip it to your desktop (or somewhere on a local disk)
Launch spdiftest.exe
select the file to play
Select the device belonging to your s/pdif output
Hit the play button
Let me know if this works!

Some test material can be found here:
http://www.kellyindustries.com/sounds.html
http://www.diatonis.com/downloads_dts_ac3.html
http://www.sr.se/cgi-bin/mall/index.asp?ProgramID=2446

I'm also interested in what happens if you play a normal stereo wav (CD rip). Does the decoder reject it as being invalid or does it play as well? Also, i'd like to know if this works on Vista as well.

If this test is successfull i will implement it in the plugin allowing more ppl (this actually should work on all devices supporting AC3 passthrough) to play DTS/DD material from My Music.

Thanx,
Symphy

jburnette · 2007-11-15, 04:29

Symphy,

I get a "Format is not supported." message box when I hit play. I'm trying to play the DTS file "Prelude" from the website you listed in your first post. I use a SB Live! soundcard that does not support ASIO, but outputs DTS and DD over S/PDIF no problem to a Yamaha receiver.

blackheart42 · 2007-11-15, 06:56

I used the Multichannelcheck files at the end of the page that you pointed to. When I run your test program and select output to 'Standard waveout device' I get a 'format is not supported' message. However, if I select output to 'Realtek HD audio output' both the DTS and DD files play fine on my home theatre receiver. I don't speak Swedish, but the narrator moves from channel to channel. The receiver also correctly displays whether the file is DTS or DD.

Ripped CD WAV files give the 'format not supported message for the 'Standard waveout device', but for the 'Realtek HD Audio Device', there's just silence. There are no error messages. The receiver's display is confusing, but it implies that the signal being received isn't a valid s/pdif signal (maybe the WAV file is being dumped to the s/pdif??).
The receiver is connected to the computer via s/pdif (coaxial).
I'm running XP SP2.

Blackheart

AlcoNaft · 2007-11-15, 17:48

I have tryed to play *.dts file in the WAV format (here is the file header "RIFFд┘ WAVEfmt" ) - program said - Format is not supported

felo · 2007-11-15, 18:34

Hi!
I tested the program and works fine, i have external decoder and my card can decode it too, both ways works fine.
I use the Multichannelcheck in the swedish site, both DD & DTS works perfect, i get no message of errors or any kind.
But the ripped "Stereo.WAV" is pure Silence! Nothing, NADA!

Audio Card : Audigy 2 ZS (last drivers)
External Decoder : Creative Inspire 5.1 Digital 5700

Cheers!

Symphy · 2007-11-15, 18:36

Ok thanx guys sofar

Quote:

Originally Posted by AlcoNaft

I have tryed to play *.dts file in the WAV format (here is the file header "RIFFд┘ WAVEfmt" ) - program said - Format is not supported

AlcoNaft, what audiodevice are you using?

Quote:

Originally Posted by blackheart42

I used the Multichannelcheck files at the end of the page that you pointed to. When I run your test program and select output to 'Standard waveout device' I get a 'format is not supported' message. However, if I select output to 'Realtek HD audio output' both the DTS and DD files play fine on my home theatre receiver. I don't speak Swedish, but the narrator moves from channel to channel. The receiver also correctly displays whether the file is DTS or DD.

Ripped CD WAV files give the 'format not supported message for the 'Standard waveout device', but for the 'Realtek HD Audio Device', there's just silence. There are no error messages. The receiver's display is confusing, but it implies that the signal being received isn't a valid s/pdif signal (maybe the WAV file is being dumped to the s/pdif??).
The receiver is connected to the computer via s/pdif (coaxial).
I'm running XP SP2.

Blackheart

Your standard windows device is probably set to some different device. This behaviour is what i expected. The normal wav is indeed dumped to s/pdif in passthrough mode. The s/pdif "non-audio flag" is on in that case, aparently forcing the receiver to expect dd or dts. I was hoping it would be possible to play normal music this way too (bitperfect) but too bad

Quote:

Originally Posted by jburnette

Symphy,

I get a "Format is not supported." message box when I hit play. I'm trying to play the DTS file "Prelude" from the website you listed in your first post. I use a SB Live! soundcard that does not support ASIO, but outputs DTS and DD over S/PDIF no problem to a Yamaha receiver.

Ok thats probably due to the fact that SB Live does not support 44.1kHz sampling rate.

Thanx again,
Symphy

Quote:

Originally Posted by felo

Hi!
I tested the program and works fine, i have external decoder and my card can decode it too, both ways works fine.
I use the Multichannelcheck in the swedish site, both DD & DTS works perfect, i get no message of errors or any kind.
But the ripped "Stereo.WAV" is pure Silence! Nothing, NADA!

Audio Card : Audigy 2 ZS (last drivers)
External Decoder : Creative Inspire 5.1 Digital 5700

Cheers!

Thanx felo!

felo · 2007-11-15, 22:44

Hello again!
I also have a Creative SB Live 5.1! (in other pc) and can play fine a Stereo .WAV at 44.100khz and 48.000khz (in WMP), but not the multichannel ones, it give me the error one.

Cheers!

AlcoNaft · 2007-11-15, 23:57

Quote:

Originally Posted by Symphy

Ok thanx guys sofar

Quote:

Originally Posted by AlcoNaft

I have tryed to play *.dts file in the WAV format (here is the file header "RIFFд┘ WAVEfmt" ) - program said - Format is not supported

AlcoNaft, what audiodevice are you using?

SoundMax - Analog Devices AD1986A @ nVIDIA nForce 410 (MCP51) - High Definition Audio Controller
(piece of crap actually

, due to very old driver from ASUS/SoundMax, of course ASIO is not supported)

Itisme · 2007-11-18, 12:16

format not supported over here too!
Realtek AC'97

Spragleknas · 2007-11-18, 12:28

Quote:

(piece of crap actually , due to very old driver from ASUS/SoundMax, of course ASIO is not supported)

What about Asio4all?

2007-11-14, 23:05	#1 (permalink)
Symphy Portal Developer Join Date: Aug 2007 Age: 40 Posts: 167 Thanks: 0 Thanked 15 Times in 13 Posts Country:	Wanted: volunteers with s/pdif and DTS/DD decoder! Hi everyone! Working on my ASIO music player plugin, i'm investigating possibilities to provide better support for DTS/DD passthrough for My Music. However, i don't own an external decoder myself, so i'd like to ask ppl who have to do a little test for me. Implementing my new plan in the plugin is gonna be some work so i'd like to know if it works before doing a lot of work for nothing Here is a little testprogram spdiftest.zip, that should be able to play a DTS/DD encoded wav over s/pdif. Usage is simple: Unzip it to your desktop (or somewhere on a local disk) Launch spdiftest.exe select the file to play Select the device belonging to your s/pdif output Hit the play button Let me know if this works! Some test material can be found here: http://www.kellyindustries.com/sounds.html http://www.diatonis.com/downloads_dts_ac3.html http://www.sr.se/cgi-bin/mall/index.asp?ProgramID=2446 I'm also interested in what happens if you play a normal stereo wav (CD rip). Does the decoder reject it as being invalid or does it play as well? Also, i'd like to know if this works on Vista as well. If this test is successfull i will implement it in the plugin allowing more ppl (this actually should work on all devices supporting AC3 passthrough) to play DTS/DD material from My Music. Thanx, Symphy Last edited by Symphy; 2007-11-15 at 17:46.

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2007-11-15, 04:29	#2 (permalink)
jburnette Portal Member Join Date: Aug 2006 Location: Kentucky Age: 23 Posts: 664 Thanks: 117 Thanked 83 Times in 44 Posts Country: My System	Symphy, I get a "Format is not supported." message box when I hit play. I'm trying to play the DTS file "Prelude" from the website you listed in your first post. I use a SB Live! soundcard that does not support ASIO, but outputs DTS and DD over S/PDIF no problem to a Yamaha receiver.

2007-11-15, 06:56	#3 (permalink)
blackheart42 Portal Member Join Date: Oct 2006 Posts: 54 Thanks: 1 Thanked 1 Time in 1 Post Country:	I used the Multichannelcheck files at the end of the page that you pointed to. When I run your test program and select output to 'Standard waveout device' I get a 'format is not supported' message. However, if I select output to 'Realtek HD audio output' both the DTS and DD files play fine on my home theatre receiver. I don't speak Swedish, but the narrator moves from channel to channel. The receiver also correctly displays whether the file is DTS or DD. Ripped CD WAV files give the 'format not supported message for the 'Standard waveout device', but for the 'Realtek HD Audio Device', there's just silence. There are no error messages. The receiver's display is confusing, but it implies that the signal being received isn't a valid s/pdif signal (maybe the WAV file is being dumped to the s/pdif??). The receiver is connected to the computer via s/pdif (coaxial). I'm running XP SP2. Blackheart

2007-11-15, 17:48	#4 (permalink)
AlcoNaft Portal Member Join Date: Oct 2007 Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Country:	I have tryed to play *.dts file in the WAV format (here is the file header "RIFFд┘ WAVEfmt" ) - program said - Format is not supported

2007-11-15, 18:34	#5 (permalink)
felo Portal Member Join Date: Oct 2007 Location: Whit my MOM! Age: 6 Posts: 62 Thanks: 8 Thanked 0 Times in 0 Posts My System	Hi! I tested the program and works fine, i have external decoder and my card can decode it too, both ways works fine. I use the Multichannelcheck in the swedish site, both DD & DTS works perfect, i get no message of errors or any kind. But the ripped "Stereo.WAV" is pure Silence! Nothing, NADA! Audio Card : Audigy 2 ZS (last drivers) External Decoder : Creative Inspire 5.1 Digital 5700 Cheers!

2007-11-15, 22:44	#7 (permalink)
felo Portal Member Join Date: Oct 2007 Location: Whit my MOM! Age: 6 Posts: 62 Thanks: 8 Thanked 0 Times in 0 Posts My System	Hello again! I also have a Creative SB Live 5.1! (in other pc) and can play fine a Stereo .WAV at 44.100khz and 48.000khz (in WMP), but not the multichannel ones, it give me the error one. Cheers!

2007-11-18, 12:16	#9 (permalink)
Itisme Portal Member Join Date: Feb 2006 Posts: 27 Thanks: 0 Thanked 0 Times in 0 Posts	format not supported over here too! Realtek AC'97