Re: [LAU] Update of jconv

On Tue, Dec 01, 2009 at 11:06:51PM +0100, fons@email-addr-hidden wrote:
> Hello all,
>
> Updates of jconv, now called jconvolver, and the zita-convolver
> library are available on the usual place:
> <http://www.kokkinizita.net/linuxaudio/downloads>/
>
> The new zita-convolver is API-compatible to the previous
> release but not binary compatible. If you have any code
> using it please recompile.
>
> Release notes for jconvolver and fconvolver 0.8.4
> -------------------------------------------------
>
> Jconvolver is a real-time convolution engine. It
> can execute up to a 64 by 64 convolution matrix
> (i.e. 4096 simultaneous convolutions) as long as
> your CPU(s) can handle the load. It is designed
> to be efficient also for sparse (e.g. diagonal)
> matrices. Unused matrix elements do not take
> any CPU time.
>
> In contrast to e.g. BruteFir, jconvolver uses
> multiple partition sizes, small ones at the start
> of the impulse response and progressively longer
> ones for the rest. This allows it provide both
> zero processing delay while still remaining
> efficient in CPU use.
>
> Fconvolver performs the same processing on files
> instead of real-time.
>
> For this relaese the package and the binaries
> have been renamed to avoid a conflict with an
> existing 'jconv' package (related to the Japanese
> language).
>
> Functionally this version is identical to jconv
> 0.8.0. See README.CONFIG for the syntax of the
> config files. Since 0.8.0 it has been possible
> to name and connect the Jack ports. The related
> commands have been added to README.CONFIG.
>
> Jconvolver will work with libzita-convolver 1.0.0,
> but upgrading to 2.0.0 is recommended. Note that
> if you update the library you have to recompile
> this package.
>
> NOTE: Jconvolver will normally not work correctly
> when used with Jack's freewheeling mode, e.g. when
> exporting in Ardour. It _could_ actually work when
> used on a single processor system, but don't rely
> on this. This release of jconvolver will print a
> warning when freewheel mode is entered.

Really? A huge number of tracks I've published, were mixed in Ardour freewheeling mode, using jconv for reverb. Worked fine for me, at least with the older versions.

>
> The 'mkwavex' utility from previous versions has
> been replaced by 'makemulti' which offers some more
> options.
>
>
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Received on Wed Dec 2 12:15:02 2009