[Flac-dev] are 588 sample frames subset or nonsubset?

[Josh Coalson]

hi Howard, I'll check into the discrepancy but having the FLAC
blocksize match the CD sample frame size is probably not desirable.
the optimal blocksize for FLAC is relative to the stationarity of
the signal and the 588 sample frame is not related to that, it's
an artifact of optimal storage on CD.

Josh

--- Howard Farrar <howard.farrar at meridian.co.uk> wrote:

> Hi
> 
> I am thinking of ripping albums to a single flac file with embedded
> cuesheet.  As track and index points have to be on a 588 sample
> boundary due
> to the CD TOC standard working in 588 sample frames, I thought it may
> be beneficial to rip CDs with a blocksize of 588 samples.
> 
> According to the format page on sourcefourge a stream is subset if
> 
> 	"The blocksize bits in the frame header must be 0001-1110.
> 	 The blocksize must be <=16384;
> 	 if the sample rate is <= 48000Hz, the blocksize must be <=4608.
> 
> As far as I can tell, this means that a blocksize of 588 should be
> subset,
> although the blocksize would be a 16 bit value at the end of the
> frame
> header.
> 
> However when I try encoding with flac 1.2.1 it says that only the
> blocksizes
> that can be represented in the 4 bits in the early part of the frame
> header.
> 
> Which is correct?  Can anyone forsee any problems with encoding with
> a block
> size of 588 samples?
> 
> Best Regards
> 
> Howard
> 
> 
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