More on Volume

In the latest code, I've fixed the volume values I used to program the WM8741. Previously I mistakenly used 0.25 dB as the smallest interval whereas it is .125 dB the smallest interval, so my volume readings were twice the actual value.

Also I did not see the need to use an interval of less than 1 dB because it is already not very discernible a difference of 1 dB.

Now, the typical listening level is above -50 dB, and mostly in the -30 dB to -15 dB. Therefore above the -48 dB at which point you will start experiencing (theoretically) some loss in information due to the nature of digital volume control.

I also got a response from Wolfson about how the volume control is implemented: Basically input less than 24 bit is padded to 24 bit, input that is 25 to 32 bit is reduced to to 24 bit with dither and the volume control is applied at the next stage.