[Consortium] Updates and new stuff

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To: Linux Audio Developers <linux-audio-dev@...>, Linux Audio Users <linux-audio-user@...>, Linux Audio Consortium <consortium@...>
Date: Wednesday, July 4, 2007 - 12:51 pm

Hello all,

Some updates and new things on my webpages.

First official release of jconv.

Jconv is a command line jack client performing FFT-based
convolution using a mix of up to five partition sizes,
small ones at the start of the IR, and building up to
the optimum size further on. It allows zero-delay
convolution with moderate CPU load. Jconv uses the
multi-threaded convolution engine developed for use
in Aella, a convolution engine optimised for reverb
processing that is nearing completion.

Main features of jconv:

- Any convolution matrix up 64 by 64, as long as your
CPU(s) can take it.
- Allows to trade off processing delay to CPU load, and
remains efficient even when configured for zero delay.
- Reads the same config files as Jace which it will
eventually replace.

The beta version released two months ago to some
volunteers contained a bug discovered and patched
by Martin Rumori. It did not affect configurations
using independent 1-to-1 convolutions, only matrix

Update of Ambdec

Some small changes and bugfixes. The configuration
format now also permits the use of mixed-order de-
coders (2nd order horizontal, 1st order vertical).
Manual updated.

TetraProc / TetraCal.

Both are ready and have been used for real Ambisonic
recordings, but release of TetraCal awaits a required
update of Aliki, and completion of the manual that
describes the calibration procedure.

If you want to use Core Sound's TetraMic with
TetraProc this is possible today. I signed an NDA
with Core Sound giving me access to the impulse
response measurements performed by Core Sound on
each mic. Given the serial number, I can process
these using TetraCal and provide a matching config
file for TetraProc.

You can see some examples of this on the updated
screenshots page for TetraProc.

As usual:



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