Solude
Headphoneus Supremus
Bit Perfect stops below 40/100.
For example, a -12dB change accomplished by going from 16-bit to 14 bit is easily heard
The PWD volume control is 32 bit.
Originally Posted by http://hifiduino.blogspot.com
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...
I think You are wrong !
The PWD volume control based on WM8741's Volume implementation.
And according to Wolfson's answer it's 24bit.
Quote:
with a good dither? - not likely at all for any reasonable music listening scenerio -
I could well be wrong. Unfortunately the link you provided does not definitely answer the question and Wolfson's datasheet does not answer the question.
Originally Posted by Paul McGowan
The PWD will accept 32 bit data but the DAC is only 24 bit. If we misspoke somewhere.......
can't see how you're not playing games here, using false analogy - no ones talking about recording/mastering . . .
truncate, turn the gain up - to where the normal volume passages will blow out of your seat and yes, you can hear some things going on at the 16 bit lsb level - not relevant to this digital volume control discussion
Sure. Paul is reliable source.
24-bit obviously substantially reduces the available headroom for attenuation v. 32-bit