In Reply to: RE: Upsampling everything to DSD SACD posted by Cool_Jeeves on January 5, 2021 at 03:49:54:
The DSD clock is an integer multiple of the standard RB sample rate: 64 * 44.1kHz sample rate i.e 64fs is 64 * 44100 = 2.822400MHz
The bitstream runs at 2.822 MHz in order to overcome the limitations of a 1-bit D-S modulator which necessitates aggressive noise-shaping to achieve a decent SNR in the audible range. Consequently, the response may theoretically extend up to 100kHz, but the noise-shaping is designed such that the bandwidth for maximum SNR (120dB) is 20kHz which matches the Redbook specification.
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
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Follow Ups
- DSD clock is 64 * 44.1kHz - flood2 01:31:10 01/06/21 (2)
- RE: DSD clock is 64 * 44.1kHz - Cool_Jeeves 03:54:08 01/06/21 (1)
- That's interesting! - flood2 11:56:55 01/06/21 (0)