ok, I've played with it for a day now and the short mode does seem to
work best. I think that it's the input and output filters that are doing
filtering I described. I guess I was expecting the output to sound
exactly the same as the input. but It seems that the cutoff on the input
and output filters is pretty low (am I right?). Would it hurt anything
to increase the cutoff on these filters? Most of the info I've found on
delays talk about BBD circuits with a really low clock frequency
compared to this. I'd think this chip would handle higher frequencies
better because of the high sample rate. Is this the case or am I missing
something? (I've got a feeling I am)
so far, it sounds pretty nice. A bit noisy, but I haven't added the
compander yet, and I actually dont' have the digital/analog grounds
seperated for now.\
thanks,
Ryan
sasami@... wrote:
work best. I think that it's the input and output filters that are doing
filtering I described. I guess I was expecting the output to sound
exactly the same as the input. but It seems that the cutoff on the input
and output filters is pretty low (am I right?). Would it hurt anything
to increase the cutoff on these filters? Most of the info I've found on
delays talk about BBD circuits with a really low clock frequency
compared to this. I'd think this chip would handle higher frequencies
better because of the high sample rate. Is this the case or am I missing
something? (I've got a feeling I am)
so far, it sounds pretty nice. A bit noisy, but I haven't added the
compander yet, and I actually dont' have the digital/analog grounds
seperated for now.\
thanks,
Ryan
sasami@... wrote:
>>also, the output seems to be a lowpass filtered version of the input
>>with a fairly low cutoff frequency. I'm loosing all the higher
>>frequencies. The input and output sound exact if I filter the input and
>>put my oakley multiladder cutoff at about 1/4 of it's range. Sorry, I
>>don't know what frequency that would be. Is this what it does, or did I
>>do something wrong?
>
>
> You may have a wrong capacitor value - I had a similar problem at the start.
> Another thing - when run in the meduim and long modes, a second filter kicks
> in to remove the lower clock frequency. Keep it running in the short mode
> for the best bandwidth.