2010/6/14 James Courtier-Dutton <james.dutton@xxxxxxxxx> > On 14 June 2010 09:33, Colin Guthrie <gmane@xxxxxxxxxxxxxx> wrote: > > 'Twas brillig, and Raymond Yau at 14/06/10 01:25 did gyre and gimble: > >> if your sound card have ac97 codec ., you can use audacity to record the > >> output from hw:0,0 and you will see clipping occur when you set "PCM" > volume > >> above 0dB > > > > So the standard response is "don't do that then" :) > > > > That's why the base volume is shown to the user via GUIs so that they > > can gauge the best point on the slider to use. Currently there is no > > indication with alsa sliders at which point the 0dB "sweet spot" lies. > > > > What do you mean. > If you use "alsamixer", dB values are shown so it is easy to find the > 0dB "sweet spot". > I think it is pulse audio that hides this information when it combines > two alsa mixer controls into one pulseaudio control. > The base volume seem to be the software 0dB point , (no software gain/atten), but the user want the hardware 0dB point (no hardware gain/atten if the hardware can provide hardware gain This hardware 0dB point is extremely important when you want to record using line in and line out _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
