2010/4/6 Nicolo' Chieffo nicolo.chieffo@gmail.com
I've already attached my alsa-info.log in my first post.
- alsamixer 0 dB (100%):
Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined penum Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 64044 [98%] [on] Front Right: Playback 64044 [98%] [on]
Most users only care about 0dB point since any software gain is the cause of clipping (distortion) when the volume control provide software gain
http://en.wikipedia.org/wiki/Clipping_%28audio%29
In digital signal processinghttp://en.wikipedia.org/wiki/Digital_signal_processing, clipping occurs when the signal is restricted by the range of a chosen representation. For example in a system using 16-bit signedhttp://en.wikipedia.org/wiki/Signed-digit_representationintegers, 32767 is the largest positive value that can be represented, and if during processing the amplitude of the signal is doubled, samplehttp://en.wikipedia.org/wiki/Sample_%28signal%29values of 32000 should become 64000, but instead they are truncated to the maximum, 32767.