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ted_b

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If you have to convert DSD to PCM (FLAC), know it is a lossy process. But sometimes it is necessary if the playback devices don't support DSD. Make sure the conversions are 44.1k family (i.e 24/176.4k) to make losses minimal. Try DSD2FLAC

There are Mac instructions (haven't used so can't say it's updated lately).
 

marcb

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If you have to convert DSD to PCM (FLAC), know it is a lossy process. But sometimes it is necessary if the playback devices don't support DSD. Make sure the conversions are 44.1k family (i.e 24/176.4k) to make losses minimal. Try DSD2FLAC

There are Mac instructions (haven't used so can't say it's updated lately).
88.2kHz is probably the best. If you’re properly filtering upon conversion, 176.4kHz is pretty pointless.
 

marcb

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Pointless? Thanks for that.
Yes, for the most part.

In very simple terms, even if you filter as high as 50kHz, you‘re mostly just wasting the extra space needed between 24/88 and 24/176 on noise.

Try both. If you don’t hear a difference or the 24/88 even sounds better, why waste the storage space?
 

marcb

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Pointless? Thanks for that. So 352.8k is even more pointless? How about 32fs?
Yes. I can’t tell if you’re trying to be clever (you’re not), but If you’re converting DSD64 to PCM, 352.8k is even more pointless.

And yes, it is lossy in the literal sense. But it is not comparable to the common usage of the term when converting to a mp3 or aac.
 

bluelightning

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Pointless? Thanks for that. So 352.8k is even more pointless? How about 32fs?
Unless you are claiming that there is frequency content that your equipment can handle and you can actually hear above @30KHz, let's just say that it is pretty damn pointless.
 

ted_b

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? The modulation noise (not really noise, but the bit clock carrier that's being modulated by the audio producing an uncorrelated white noise in the audio realm) is attenuated/removed by the decimation filtering within the DSD(PDM) > PCM conversion process. The problem of any down conversion from DSD (any rate) to PCM is that the lower the PCM sample rate, the steeper and therefore more intrusive is the decimation filter required. 176.4k is half the rate of 352.8KHz (DXD) PCM, so therefore twice the filter steepness and non-linear phase effects. But at 88.2k that steepness and non-linear phase effects are four times as much as DXD (aka 352.8k). It's a main reason Pyramix chose 352.8k as DXD, since filtering at that sample rate was least intrusive and yet file sizes could still be manageable. If you hear a DSD conversion at 16fs or 32fs you'll hear why they are even better, but file sizes get unwieldy. And no, it's not about hearing above 30k!
 
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