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Realtime playback resampling improvement

 
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Skaven252



Joined: 24 Jan 2008
Posts: 10
Location: Stockholm, Sweden
PostPosted: Wed May 23, 2012 11:27 am    Post subject: Realtime playback resampling improvement Reply with quote
There is the "Real time resampling" option in the audio configuration, which resamples the sample to the audio device output's sample rate in real time during playback to get correct review playback rate.

However, it seems the resampling algorithm is not very good; the sound can get rather gritty if resampling between, for example, 44 100 and 48 000 Hz.

Could you see if you could use a bit more advanced realtime resampling algorithm for the realtime playback?

Thanks!
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moljen



Joined: 19 Jul 2009
Posts: 8
PostPosted: Fri Jul 12, 2013 10:28 am    Post subject: Re: Realtime playback resampling improvement Reply with quote
Yeah... the resampling is kinda gritty.


Skaven252 wrote:
There is the "Real time resampling" option in the audio configuration, which resamples the sample to the audio device output's sample rate in real time during playback to get correct review playback rate.

However, it seems the resampling algorithm is not very good; the sound can get rather gritty if resampling between, for example, 44 100 and 48 000 Hz.

Could you see if you could use a bit more advanced realtime resampling algorithm for the realtime playback?

Thanks!
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sauli



Joined: 18 Sep 2013
Posts: 2
PostPosted: Wed Sep 18, 2013 11:00 am    Post subject: Reply with quote
Indeed should be improved a lot. Low quality of realtime resampling is pretty much the only reason Wavosaur isn't my main audio editor.
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Wavosaur Main Developer
Site Admin


Joined: 30 Sep 2006
Posts: 507
Location: France
PostPosted: Wed Sep 18, 2013 11:22 am    Post subject: Reply with quote
sauli wrote:
Indeed should be improved a lot. Low quality of realtime resampling is pretty much the only reason Wavosaur isn't my main audio editor.

We are working on this point. Could you precise us what is your playing sampling rate most used, and what is your sound file sampling rate?

Thanks
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sauli



Joined: 18 Sep 2013
Posts: 2
PostPosted: Sun Oct 13, 2013 6:41 pm    Post subject: Reply with quote
Wavosaur Main Developer wrote:

We are working on this point. Could you precise us what is your playing sampling rate most used, and what is your sound file sampling rate?

Thanks


Usually working on 44.1khz or 48khz sample material and rarely on 22050hz (for mobile device purposes). It's the 44.1khz and 22050hz that sound just horrible when you have samplerate of 48khz on your audio device.

Btw Voxengo has released free opensource resampling library. Their free r8brain standalone application is excellent for resampling so if implementing this to Wavosaur is not a lot of work I'd give it a shot https://code.google.com/p/r8brain-free-src/

Thanks
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