William Powers wrote:

1) The one you are already working on, scaling the PVR-150/500 volume setting to get the same gain as a PVR-250/350 for any particular setting.

Hopefully they map to a similar range. I don't have an msp3400 datasheet, so I can't tell if this my patch will match up with the older PVR cards from top to bottom of the volume control.


2) Modifing ivtv to accept a volume fine-tuning adjustment or bias, either as a module parameter or via ioctl:

          volume = 0xff - ((volume + volume_tweak) >> 8);

Yeah that was my fall back plan. I don't want to have to resort to that if possible, since it requires setting a module parameter and the less we can require that the better. There is also a third option: Adjust the AVC to automatically normalize the audio to an acceptable volume.


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