14 Apr
2008
14 Apr
'08
7:16 p.m.
Hi,
Is there a recognized method for calibrating a sound card?
e.g.
For Playback, one sends a sample .wav PCM file to the sound card, then
measure the analog output from the line-out.
If the sound card itself provides 0dB of Gain, what should be the
measured figure?
Can this be done with a simple AC volt meter?
There seems to be some debate, with regards to ALSA, as to whether the
line-out is at the correct level if one sets all the ALSA mixer controls
to 0dB.
James