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SACD to FLAC

I would like to know how to convert SACD to FLAC, with the best quality. (How to config foobar options and which steps to follow)

I have two different SACD:

SACD1.iso
Sample rate : 2822400 Hz
Channels : 2
Bits per sample : 1
Bitrate : 5645 kbps
Codec : DSD64
Encoding : lossless

SACD2.iso (multi-channel)
Sample rate : 2822400 Hz
Channels : 6
Bits per sample : 1
Bitrate : 16934 kbps
Codec : DST64
Encoding : lossless


Thank you all.  ::)

Re: SACD to FLAC

Reply #1
"best quality" goal is ill-defined. When resampling is involved, one can always trade even more CPU resources for even more precision, but it will become pointless at some point, and where does this point stand is subjective. 
If the goal is to keep it audibly indistinguishable from the source, then you don't even need to use FLAC, a lossy format would suffice as well.

Perhaps it's worth adding a specific goal, for example, S/N ratio of resampling of ≥140 dB in <20kHz range.

That said, for all practical purposes, converting DSD to FLAC in foobar2000 while resampling with SoX resampler to 44100Hz should produce completely fine results, as long as there's no clipping. All other settings can be left as defaults.
Make sure to check "don't reset DSP between tracks…" if converting from a tracks view, otherwise resampling could be not gapless.

Re: SACD to FLAC

Reply #2
Ok, I have no idea. I just want to covert them to flac format, with correct parameters to maintain their quality.


Steps:

1. Open SACD.iso into Foobar2000
2. Select all tracks.
3. Right clic and select 'Convert'.
4. 'Converter Setup':
'Output format': FLAC
                          'edit': 'Compression Level' = 5
                          'Output bit depth' = Auto
                           'Dither' = Never
'Processing': 'Replay Gain' = None
                    'DSP' = None
                    Select "don't reset DSP between tracks…"


Are these options correct?

Re: SACD to FLAC

Reply #3
I have obtained these files 'files.flac':

Sample rate : 44100 Hz
Channels : 6: FL FR FC LFE BL BR
Bits per sample : 24
Avg. bitrate : 3493 kbps
Codec : FLAC
Encoding : lossless

Re: SACD to FLAC

Reply #4
I would like to know how to convert SACD to FLAC, with the best quality.

For the first: if you are a bit more agnostic about formats, you could use WavPack, which actually supports DSD. But you can consider just converting to [something] and leaving the iso's for backup. (Because you need backup anyway, right ... ?)




Re: SACD to FLAC

Reply #8
Can anyone confirm if these SACD to FLAC convertion options are good?  ::)

Re: SACD to FLAC

Reply #9
Then foobar's license may not meet your requirement as well.

Re: SACD to FLAC

Reply #10
http://www.gnu.org/licenses/bsd.html
WavPack uses the "modified" BSD license with no advertising clause, so it qualifies as fully free.

It is not as universally supported as FLAC, but is supported by foobar and would work nicely is you wanted to retain the DSD audio.

If you don't mind converting to PCM then your conversions are fine (and save more space).

Re: SACD to FLAC

Reply #11
Thank you for the modified BSD info.

I don't understand audio things, like DSD and PCM. I want good sound quality in flac format. I have SACD and I want it into flac format with no loss of quality.


 :)

Re: SACD to FLAC

Reply #12
I have obtained these files 'files.flac':

Sample rate : 44100 Hz
Channels : 6: FL FR FC LFE BL BR
Bits per sample : 24
Avg. bitrate : 3493 kbps
Codec : FLAC
Encoding : lossless

That looks good for 5.1 surround. Have you tried playing them?

Re: SACD to FLAC

Reply #13
I have SACD and I want it into flac format with no loss of quality.
Quality is subjective, so there's no unambiguous, "100% mathematically correct" answer.



Re: SACD to FLAC

Reply #16
'Output format': FLAC
                          'edit': 'Compression Level' = 5

Test compression level at full ( 8 ), there should not be much difference in encoding speed.

 
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