2010/6/14 James Courtier-Dutton james.dutton@gmail.com
On 14 June 2010 09:33, Colin Guthrie gmane@colin.guthr.ie 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