Re: Prevent SoX from doing the clipping?

["Måns Rullgård" <mans@mansr.com>]

Danijel DOMAZET <p-danijel.domazet@devialet.com> writes:

> Hi list,
>
> I have a heavily "overflowed" WAV file (samples written in float 32-bit
> format): instead of [-1.0,+1.0], the samples range goes as far as
> [-5.0,+5.0].
>
> Using SoX to get raw PCM audio samples from WAV file:
>
> `sox --bits 32 --channels 1 --encoding floating-point --rate 48000
> input.wav output.raw`
>
> I get warnings:
>
>     sox WARN sox: `input.wav' input clipped 1163400 samples
>     sox WARN sox: `output.raw' output clipped 605664 samples; decrease
> volume?
>
> When I look into the output, I see the samples were clipped, and the range
> is [-1.0,+1.0] now. However, that is not what I want.
>
> I would like to have exactly the same output as input, just in different
> format (RAW instead of WAV). Is there a way to prevent SoX from doing the
> clipping?

No, that isn't possible.  Sorry.

In your specific case, however, a workaround is possible.  If you
override input sample encoding as 32-bit signed integer instead of
float, the values will be copied untouched.  Since the output is
headerless, it doesn't matter what sox thinks the samples are.

-- 
Måns Rullgård


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