[flac-dev] [PATCH] Improve LPC order guess

Martijn van Beurden mvanb1 at gmail.com
Wed Dec 3 09:38:29 PST 2014

Op 03-12-14 om 18:14 schreef Brian Willoughby:
> I would like to point out that 'quiet' material is common when making original recordings.

This is probably a misunderstanding: I said that the material 
that suffers is usually quiet, not that all quiet material suffers.

> I do a great deal of live recording, and the levels are always quiet in order to guard against clipping. These live recordings are then archived via FLAC to make sure nothing is lost.

So do I, and I included a few unaltered samples with plenty of 
headroom in my standard test corpus for these improvements.

> but recent 'improvements' are sacrificing performance in one area to enhance performance in another area.

That is certainly not the case. The compression level retuning 
doesn't work beneficial for all material, but it is in this case 
simply coincidence that it is some quiet material that seems to 
suffer. The patch attached to this thread you're replying to 
however, for some reason benefits specifically this kind of sounds.

More information about the flac-dev mailing list