[LAU] Sample Manager & Apps That Support Elastic Time?

Paul Davis paul at linuxaudiosystems.com
Sat Jun 26 15:14:08 UTC 2010


On Sat, Jun 26, 2010 at 11:03 AM, Olivier Guilyardi <ml at xung.org> wrote:
> On 06/26/2010 01:57 PM, Paul Davis wrote:
>
>> Given that Rubberband was really the first library available on Linux
>> without a license that could do high quality timestretching, its not
>> really suprising that there are not that many apps which support this
>> (*).
>
> Rubberband is interesting, but when I had to develop a professional tool to time
> stretch voice recordings, the quality was far from acceptable.
>
> In the end, I used Dirac. The quality's amazing. It's not open source, but
> there's a free version with a rather permissive license (44.1/48Khz only).
> Also, the author has recently added Linux object libs.
> http://www.dspdimension.com/technology-licensing/dirac2/
>
> What about adding (optional) support for it in Ardour, as an alternative to
> Rubberband?

I've been aware of Dirac for some time. Its not feasible to use his
license in combination with Ardour without creating a fairly complex
plugin APi. Why? His license is a license for the developer, and it
won't permit source redistribution. Since Ardour links against at
least 1 GPL library, it would violate the GPL to distribute Ardour
with Dirac support as a compile+link time option. I'm not against the
idea of a plugin API for time FX backends, I've just got better things
to do at this point in time, and for the foreseeable future.


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