It adjusts the volume linearly, while the correct behaviour is to adjust it logarithmically (in dB...). So the volume scale is incorrect, and the volume level isn't equal to alsamixer's. I use plain ALSA. VOLUME MAPPING: In alsamixer, the volume is mapped to a value that is more natural for a human ear. The mapping is designed so that the position in the interval is proportional to the volume as a human ear would perceive it, i.e. the position is the cubic root of the linear sample multiplication factor. For controls with a small range (24 dB or less), the mapping is linear in the dB values so that each step has the same size visually. Only for controls without dB information, a linear mapping of the hardware volume register values is used (this is the same algorithm as used in the old alsamixer). (I'm talking about http://git.alsa-project.org/?p=alsa-utils.git;a=blob;f=alsamixer/volume_mapping.c;h=1c0d7c45e6686239464e1b0bbc8983ea57f3914f;hb=HEAD ) -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
