[LAU] sample rate converter?

Fons Adriaensen fons at linuxaudio.org
Fri Sep 27 21:15:43 UTC 2013

On Fri, Sep 27, 2013 at 10:10:00AM -0400, Grekim Jennings wrote:
> Thanks Fons.  Do you have a recommendation for how much headroom to leave
> before the conversion, and if you do clip during the conversion is there
> any sort of warning?  I used to leave around 1.5 dB.  The way I used to
> go about this was to apply all limiting to the 24-bit 48000 kHz track,
> then SR convert, then normalize (to ~ -0.3 dB) or set a final level, and
> finally dither/quantize.

In theory there is no limit to the inter-sample peak level.
It *could* matter for some technical test signals etc. For
normal music signals even 0.5 dB should be enough, and even
if it clips you very probably won't notice. 



A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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