Hi Helmut, At Fri, 11 Oct 2002 11:53:42 +0200, Helmut Obertanner wrote: > > how is that with other cards, is the mastervolume also respoonnsible for the > rearchannels ???
it depends. the later models of cmipci support 4/6 channels playback via one DMA, i.e. interleaved output. in this case, the output volume is controlled by a master volume. in the case of SB live, the rear output has different codec without volume controls, but the emu10k1 dsp itself can attenuate the signals inside. most of other sound chips use AC97 for the rear volume controls. some use the secondary codec, and some use a 4/6 channel-capable codec. in both cases, the "Surround" volume element will be there. > another problem: > in another thread i want to record, (for the realtime vocoder / FX on > microphone) > > opening the device fails with: device busy. > i use another pcm_handle for capture. > > is it impossible to record while playing ? > or what i'm doing wrong... the rear output uses the ADC as the secondary DAC. so, you cannot use ADC together with 4 channel outputs. (again, the later models use only one DAC for interleaved 4/6 mode, and it's no problem.) ciao, Takashi ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
