On Thu, 1 May 2008, Bart de Boer wrote: > Dear list, > > I'm having trouble passing pure 44.1 kHz audio through SPDIF properly. > I'm able to pass it through. But the sound gets sped up to 48 kHz making > it sound as if the pitch is turned up. I know alsa enables me to upmix > all sound to 48 kHz. But that causes too much quality loss. I want it to > pass through pure 44.1 kHz audio. > My system: > > * Ubuntu (8.04) Hardy > * MythMusic > * Onboard chip: Realtek ALC600 > > According to Realtek that chip is capable of producing 32, 44.1 and 48 > kHz sample rates through spdif. So I guess it should be possible? I ALSA That may be lie. It may upmix internally-- just as badly as alsa does. > capable of switching those rates on the fly? Or should this be done by > mythmusic? Not sure what you mean "on the fly" Do you mean you send it one song at 48KHz and the next at 44.1? I do not believe that is possible. > > Hope someone can help me! > > Kind regards, > > Bart > > ==================== > Complete output of /proc/asound/card0/codec97#0/ac97#0-0: > > 0-0/0: Realtek ALC650F > > PCI Subsys Vendor: 0x1509 > PCI Subsys Device: 0x9202 > > Capabilities : > DAC resolution : 20-bit > ADC resolution : 18-bit > 3D enhancement : Realtek 3D Stereo Enhancement > > Current setup > Mic gain : +0dB [+0dB] > POP path : pre 3D > Sim. stereo : off > 3D enhancement : off > Loudness : off > Mono output : MIX > Mic select : Mic1 > ADC/DAC loopback : off > Double rate slots: 10/11 > Extended ID : codec=0 rev=1 LDAC SDAC CDAC DSA=0 SPDIF DRA VRA > Extended status : LDAC SDAC CDAC SPDIF=10/11 SPDIF VRA > PCM front DAC : 44100Hz > PCM Surr DAC : 44100Hz > PCM LFE DAC : 44100Hz > PCM ADC : 44100Hz > SPDIF Control : Consumer PCM Copyright Category=0x2 Generation=1 > Rate=44.1kHz > SPDIF In Status : Not Locked > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- William G. Unruh | Canadian Institute for| Tel: +1(604)822-3273 Physics&Astronomy | Advanced Research | Fax: +1(604)822-5324 UBC, Vancouver,BC | Program in Cosmology | unruh@xxxxxxxxxxxxxx Canada V6T 1Z1 | and Gravity | www.theory.physics.ubc.ca/ ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
