25 Feb
2010
25 Feb
'10
2:14 p.m.
2010/2/19 Lennart Poettering mznyfn@0pointer.de
On Thu, 18.02.10 14:15, Raymond Yau (superquad.vortex2@gmail.com) wrote:
VLC media player has a slider from 0% to 300% , so the user are easily to know 100% is the point which there is no software gain and no software autentation
How did PA expose these software amplication in the UI so that ordinary
user
can know that point ?
Depends on the UI program. gnome-volume-control currently only puts a marker at the ALSA 0dB point, but not a second one where software amp starts.
For example , your program dbmeasure.c generate a full amplitude sine wave , the sine wave will be clipped for any software gain by pulseaudio , any hardware att. by DAC cannot change the clipped sine wave