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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Asynchronous upsampling posted by real_jj on May 22, 2006 at 07:41:45:
"That could mean many things, some of which are entirely valid as far as upsampling."In this case, it means conversion to a sample rate that is not an exact integer multiple of the original sample rate. For example, 96 and 192 (kHz) are not exact integer multiples of 44.1 (kHz).
The generic name for this is "asynchronous sample-rate conversion." And such application is achieved by use of off-the-shelf "asynchronous sample-rate converter" chips. (Cirrus is a manufacturer of these converter chips. The data sheets spell out the details of how they work. See link for details.)
It may be valid in regard to application, but I personally think it mangles the fidelity of the signal compared to synchronous upsampling (aka 2x/4x/8x.... oversampling) and non-oversampled (non-digital filtered) conversion.
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Follow Ups
- Re: Asynchronous upsampling - Todd Krieger 12:55:03 05/22/06 (4)
- No problem at all, done right. - real_jj 14:42:35 05/22/06 (3)
- But... - Ted Smith 21:49:50 05/23/06 (2)
- Actually, no... - real_jj 19:20:23 05/25/06 (1)
- Read their specs more closely and then see if you agree with me - Ted Smith 19:47:57 05/25/06 (0)
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