[Speex-dev] Denoise causing drain pipe effect in audio

[Gurinder Singh]

Hi Jean

Thanks for the reply.

We expect to use the codec in an environment where we expect very high
background noise where high noise suppression will be needed. In a
situation like a soccer match.

Is there a way of retaining high noise suppression and still getting
better audio quality. Your pointers will be of great help.

Thanks,
Gurinder

On 6/4/10, Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> wrote:
> On 10-06-04 05:16 AM, Gurinder Singh wrote:
>> I have been developing an audio application using Speex. To reduce the
>> background noise in the captured audio I have enabled the denoise
>> feature and set the noise suppression level to 60.
>
> There you go, don't do that. There's a reason that's not the default. If
> increasing that level didn't cause artefacts, I would have set it higher
> by default.
>
> 	Jean-Marc
>
>> Although the
>> constant background noise is reduced but using denoise introduces a
>> weird effect in the audio which can be described as 'Drain Pipe'
>> effect.
>>
>> Has anyone faced a simiar issue with the denoise. If yes how did u
>> manage to solve it or reduce this effect.
>>
>> Thanks,
>> Gurinder
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>>
>>
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