[Consortium] Re: Linuxaudio.org consortium launch

Stephan M.Bernsee smb at dspdimension.com
Tue Apr 6 13:44:55 EDT 2004

Hi Dominic,

I checked out the sound files at 
http://sky.prohosting.com/oparviai/soundtouch/soundstretch.html and 
they sound about the same as Audacity (those I was able to load at all, 
that is). Maybe they are not up to date?

Anyway, I'll have a look at the SoundStretch MacOS X binary provided on 
his site and will try compiling the lib under OS X for comparison.


Am 06.04.2004 um 19:26 schrieb Dominic Mazzoni:

> Looks like a neat project.  Keep in mind that Audacity is just wrapping
> Olli Parviainan's excellent SoundTouch library.  For some more detailed
> comparisons, you may want to download SoundTouch and try it out 
> directly;
> there is a newer version than the one used in the last Audacity release
> and it's possible it sounds even better.  It should compile easily on 
> any
> Linux or Mac OS X platform.
> - Dominic
> On Apr 6, 2004, at 1:40 AM, Stephan M.Bernsee wrote:
>> Hi Daniel,
>> there are quite a few solutions for musically monophonic sounds out 
>> there that work very well indeed. It's the complete mix of 
>> instruments that gives them a hard time, which is exactly where 
>> ClearScale comes in: it is intended for both musically monophonic and 
>> polyphonic material, the goal being artifact free (or at least 
>> sonically pleasing) time and pitch changing over at least one octave, 
>> or changing the length by a factor 2 in both directions.
>> Additionally, formant correction is planned which avoids the common 
>> "munchkinization syndrome" (Mickey-Mouse-Effect) when changing the 
>> pitch.
>> Cheers,
>> Stephan
>> Am 06.04.2004 um 10:34 schrieb Daniel James:
>>>> There are a few Open
>>>> Source solutions around. I no experience using them
>>>> but I suspect they don't compare with the design goals
>>>> of ClearScale.
>>> Comparing the Audacity effect with the ClearScale example at:
>>> http://www.clearscale.org/html/results.html
>>> yields an obvious improvement. However, I've used the Audacity
>>> timestretching tool on less complex material with good results, such
>>> as single vocals or drum breaks.
>>> I'm sure the Audacity team would be interested to check out
>>> ClearScale - I'll cc this email to Dominic.
>>>> It should be announced on the LAD list where Stefan
>>>> can get more feedback and publicity.
>>> I've already suggested to Stephan that he does just that, because I
>>> agree this is something that people on the lists will be interested
>>> in.
>>> By the way, I just noticed that the number of subscribers to the 
>>> users
>>> list has passed the number on the developers list for the first time
>>> - is this a sign of something? There's a graph at:
>>> http://www.linuxdj.com/audio/lad/subscribe.php3
>>> Cheers
>>> Daniel

More information about the Consortium mailing list