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

Steve Underwood
Sat, 05 Jun 2010 04:17:08 -0000

On 06/04/2010 07:37 PM, Jean-Marc Valin 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
>>
I've never heard a single mic denoiser that doesn't sound best in the
"off" position. :-)

Steve