Re: [LAU] Dereverberation

On 9/14/2016 1:33 PM, Fons Adriaensen wrote:
> On Wed, Sep 14, 2016 at 12:46:34PM -0400, Ivica Ico Bukvic wrote:
>
>> Given in my case I am not concerned with mangling the audio (it is
>> not intended to be played back, only used to calculate TDOA between
>> mics), I have no reservations towards resorting to destructive kinds
>> of processing as long as it improves my ability to identify accurate
>> TDOA between multiple mics.
> But earlier:
>
>>>> Does anyone have access to an easy to implement (as in code)
>>>> dereverberation algorithm assuming one has access to the room impulse
>>>> response? I am looking for a way to clean-up recorded audio signal in
>>>> order to improve signal clarity (e.g. speech).
> So now I'm a bit confused... Do you need improved audio, or just
> signal statistics ???

Good point. As long as the spectral content is more accurate because it
is devoid of extraneous reflections and therefore potentially altering
the spectral composition to the point it fails to be cross-correlated
correctly, and a single window of sound is enough to do a more accurate
cross-correlation, I am fine with that. The in-between-windowing
artifacts do not concern me as long as they are not a cause of signal
degradation to the point where cross-correlation is affected by it. Hope
this helps. Thank you all for your input so far.

Best,

Ico

>
> Ciao,
>

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Received on Thu Sep 15 00:15:01 2016