Veggen;210189 Wrote: > Ron, good work, seems you are on the right track. > Youre just doing low pass filtering, right? > So the stream will still be 96 khz? > Would it be possible to add a "-r 48000" argument to do resampling as > well?
Thanks Veggen, Yes, I am still streaming at 96 KHz. It would certainly be possible to resample to 48000 instead, but then a resampling effect would have to be specified as well, and they looked complicated:) The choices are polyphase, rabbit, and resample. I am going to try "resample -ql." The documentation says that gives approximately 24 bits of precision. That probably makes more sense than a simple brick-wall filter, then dropping every other sample in the SB3. I say this because I have plotted what I think is the sox filter response, and it is quite flat from DC to 24 KHz, and has no group-delay, but it does introduce an odd looking phase variation across the spectrum. I certainly cannot hear anything wrong, but I wonder if a more sophisticated algorithm would avoid tampering with the phase? Once again - I don't know. -Ron -- Ron F. *Squeezebox setup:* wireless SB3 -> CI Audio VDA.2 DAC + VAC.1 PSU *Main rig:* NAD 7600 + NAD 2600A -> Phase Tech PC-6.5 speakers *Headphone rig:* Headroom Max -> Sennheiser 650s *Music Server:* Nano-ITX computer running SlimCD + 750 GByte HDD -> Netgear wireless router *Other stuff:* NAD C542 CDP, NAD 6300 Tape, Monster 5100 Power conditioner, Outlaw Audio cables ------------------------------------------------------------------------ Ron F.'s Profile: http://forums.slimdevices.com/member.php?userid=5616 View this thread: http://forums.slimdevices.com/showthread.php?t=36240 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
