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In Reply to: RE: Yes. My 1.2 kit plays 24/96K. posted by Paul Folbrecht on June 06, 2009 at 11:31:12
Most humans cannot hear beyond 20KHz. Most microphones and loudspeakers don't work beyond 20KHz. Recording at 192K makes no sense. In theory, all you need to be able to record any and all frequencies up to 20KHz is a 40K sample rate. In practice you need a little more head room to relax the requirements for the anti-alias filter. It is generally agreed that a 60K sample rate meets all the requirements but few audio DACs work at the rate. 88.2K also meets the basic requirements, is handled by most DACs, and creates smaller files than 96K, which is the next best. Recording at 192K provides no more resolution for any signal in the audio range and creates huge files. It also makes more demands on the digital interface and the DAC.
For myself, I'm ripping my CDs at 44.1K/16 and I'll be digitizeing my LPs at 88.2K/24. For playback, the CD files will be resampled to 88.2K/24, on the fly, using a FIR-less interpolator and the LP files will be passed unaltered to DAC, which will be running with a fixed master clock. The PC sound card is synced to the DAC's word clock.
That's the plan, anyway. I'm just now getting started. My silent PC front end is ready with a 2TB NAS. All I have to do is finish the interpolator, build the new DAC, and rip 1000+ LPs and CDs.
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