[sdiy] BBD question

[Nicholas Gregorich]

Ian Smith wrote:
> I've got the old Panasonic BBD manual and it shows one with a 20 kHz 12dB lowpass filter at both the input and output... I'm guessing that's to reduce clock noise. So I'm thinking have a filter at the beginning of the chain and between each BBD and one at the end.
> 

The one at the input is probably considered an anti-aliasing filter, and 
at the output a reconstruction filter (reduces clock noise). In that 
case a filter between BBD stages is probably a good idea to prevent 
aliasing in the second BBD.

Nick.