Re: [ecasound] lossless conversion broken?

From: Sergei Steshenko <sergstesh@email-addr-hidden>
Date: Sun Oct 31 2010 - 18:14:44 EET

--- On Sat, 10/30/10, Dan Muresan <danmbox@email-addr-hidden> wrote:

> From: Dan Muresan <danmbox@email-addr-hidden>
> Subject: Re: [ecasound] lossless conversion broken?
> To: "Kai Vehmanen" <kvehmanen@email-addr-hidden>
> Cc: ecasound-list@email-addr-hidden
> Date: Saturday, October 30, 2010, 6:24 AM
> > † † †Before processing,
> Ecasound converts all input data to its internal
> > format (defaults to 32bit-float/44100Hz). This is not
> optimal if you want to
> [snip]
> Because for
> low-amplitude
> signals, that could add significant distorsion. What
> exactly triggers
> the conversion?
>
> -- Dan
>

For low amplitude signals you have quite enough bits in a float, for
example, for 5 bit amplitude signal you have all the 23 (without sign)
bits of float mantissa, so no precision loss occurs.

You lose a bit in case of high amplitude 24 bit ints - when you don't hear
it.

Regards,
  Sergei.

      

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Received on Sun Oct 31 20:15:01 2010

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