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Author Topic: Format conversion  (Read 1657 times)

pandaman

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Format conversion
« on: January 08, 2015, 09:20:18 pm »
When I attempt to convert from DSD to PCM (FLAC) the conversion instantly produces a zero length output file.  Why does this not work?  I have followed the simple instructions in the help file.
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Matt

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Re: Format conversion
« Reply #1 on: January 09, 2015, 09:10:15 am »
Use DSP Studio to pick a reasonable sample rate, and of course make sure DSP is enabled.  Does that make it work?
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Matt Ashland, JRiver Media Center

AndrewFG

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Re: Format conversion
« Reply #2 on: January 09, 2015, 10:16:10 am »
Quote from: Matt on January 09, 2015, 09:10:15 am
Use DSP Studio to pick a reasonable sample rate, and of course make sure DSP is enabled.  Does that make it work?

BTW the SACD default "sample rate" is 2'822'400 Hz (= bit rate in bits per second) which is what is shown in MC's display columns; but MC internally converts that to a 352'800 Hz sample rate (= same bit rate but in bytes per second); and if you convert such a SACD file to say WAV at 24 bit depth, you end up with a file with a 352'800 Hz sample rate and 24 bit depth = 8'467'200 bits per second; so a SACD to WAV conversion at default settings produces 3 times as many bits per second as the original; surely its magic ...

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Hendrik

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Re: Format conversion
« Reply #3 on: January 09, 2015, 10:22:07 am »
Quote from: AndrewFG on January 09, 2015, 10:16:10 am
BTW the SACD default "sample rate" is 2'822'400 Hz (= bit rate in bits per second) which is what is shown in MC's display columns; but MC internally converts that to a 352'800 Hz sample rate (= same bit rate but in bytes per second); and if you convert such a SACD file to say WAV at 24 bit depth, you end up with a file with a 352'800 Hz sample rate and 24 bit depth = 8'467'200 bits per second; so a SACD to WAV conversion at default settings produces 3 times as many bits per second as the original; surely its magic ...

DSD and PCM are quite different concepts, and conversion between them is quite lossy, and to minimize said loss, the PCM result of a proper conversion is in fact quite a lot bigger.
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AndrewFG

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Re: Format conversion
« Reply #4 on: January 09, 2015, 12:50:18 pm »
Indeed..
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pandaman

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Re: Format conversion
« Reply #5 on: January 09, 2015, 10:15:21 pm »
Quote from: Matt on January 09, 2015, 09:10:15 am
Use DSP Studio to pick a reasonable sample rate, and of course make sure DSP is enabled.  Does that make it work?

Setting sample rate is what was needed, although the documentation states that 382.5K is the default.  Thank you!
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