Hello
I am running Daphile into a PCM2704 usb to coax digital converter, then coax digital into Audiolab M-DAC. My question is, as PCM2704 runs max at 48kbit sample rate, would I hear any difference with USB TOSLINK coaxial converter at 192kbit. The M-DAC max sample rate is 192kHz.
Help appreciated.
Thanks
thyristor44
I am running Daphile into a PCM2704 usb to coax digital converter, then coax digital into Audiolab M-DAC. My question is, as PCM2704 runs max at 48kbit sample rate, would I hear any difference with USB TOSLINK coaxial converter at 192kbit. The M-DAC max sample rate is 192kHz.
Help appreciated.
Thanks
thyristor44
I think you are mixing up bit rate (bit/s) and sample rate (samples/s or Hz). Assuming the question is whether 192 kHz sample rate audio sounds any better than 48 kHz sample rate audio:
If you are a cat, dog or bat, which seems unlikely as they tend not to post on this forum, then 192 kHz sample rate audio will definitely sound better.
If you are human, then it is the subject of a lot of debate with no definitive answer. Assuming that spectral components above 22 kHz are always inaudible to humans no matter what (not everyone agrees to that), then 48 kHz should be enough according to the sampling theorem (*). However, there are things like intersample overshoots that are less of an issue at 192 kHz than at 48 kHz. Then again, intersample overshoots can easily be eliminated by digitally attenuating the signal by a few dB before any digital or analogue filtering is done.
(*): Theoretically 48 kHz is enough for 24 kHz audio bandwidth, but you need some margin for filter transition bands, so in practice 48 kHz sample rate usually corresponds to 22 kHz audio bandwidth.
If you are a cat, dog or bat, which seems unlikely as they tend not to post on this forum, then 192 kHz sample rate audio will definitely sound better.
If you are human, then it is the subject of a lot of debate with no definitive answer. Assuming that spectral components above 22 kHz are always inaudible to humans no matter what (not everyone agrees to that), then 48 kHz should be enough according to the sampling theorem (*). However, there are things like intersample overshoots that are less of an issue at 192 kHz than at 48 kHz. Then again, intersample overshoots can easily be eliminated by digitally attenuating the signal by a few dB before any digital or analogue filtering is done.
(*): Theoretically 48 kHz is enough for 24 kHz audio bandwidth, but you need some margin for filter transition bands, so in practice 48 kHz sample rate usually corresponds to 22 kHz audio bandwidth.
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Great answer^.
I have found that it’s subjectively a “sometimes” thing as far as that goes, with so many other variables along the way. Of course we crave better capability, yet it just isn’t always required.
I have found that it’s subjectively a “sometimes” thing as far as that goes, with so many other variables along the way. Of course we crave better capability, yet it just isn’t always required.
Thanks MarcelvdG that settles that, I will not strive for 192k sample rate. When I was young I could hear up 20k when tested. I am now old