Linux-audio-dev November 2002

linux-audio-dev@lists.linuxaudio.org

87 participants
85 discussions

[linux-audio-dev] [ANN] swh plugins v0.3.0

by Steve Harris

http://plugin.org.uk/releases/0.3.0/ Includes the most often requested thing, compressors. SC1 - mono in, mono out variable knee compressor SC2 - mono in, mono out variable knee compressor w/ permenantly wired sidechain. SC3 - stereo in, stereo out etc. with selectable sidechain. Many thanks to Mark K. for extensivly testing the algorithm. There are also a couple of new, very low level plugins, quality improvements on the gong and plate reverb, serious speed improvements on the valve plugin, and noticable, but not stunning improvements to various other things. Oh, and I finally fixed the prefix stuff in the configure.in. Its still broken for MacOS X, and I no long have access to a box, so if anyone fancies fixing the autoconf I can point you in the right direction. - Steve

21 years, 5 months

[linux-audio-dev] Interesting USB MIDI master keyboards, do the work with Linux ?

by Benno Senoner

Perhaps old news but I saw these interesting USB MIDI master keyboards http://www.harmony-central.com/Newp/2002/PCR-30-PCR-50.html I'm considering getting one so my questions are: - What's the status of USB MIDI on Linux ? Are such kind of keyboards fully supported ? (eg transmit all the params as midi events or use special USB message) - what kind of Note-on MIDI latency do these keyboards have ? (standard midi keyboards 1.1msec) thanks, Benno --- http://linuxsampler.sourceforge.net Building a professional grade software sampler for Linux. Please help us designing and developing it.

21 years, 5 months

[linux-audio-dev] Viable multi-channel audio I/O boards for Linux ?

by Greene, David L.

linux-audio-dev'ers, I am working in an Operations Center where we want to record 16-20 separate analog audio voice nets/channels along with a few ethernet-based display-data(not video) streams and play them all back individually, selectively or all together for training purposes. The audio nets are better than phone-quality, but not hi-fidelity and 22Khz sampling should be sufficient. There are many turnkey voice-loggers and pc-based "studio" applications but I need the audio recordings closely-coupled with my own recordings of display-net data. I won't be doing a lot of audio processing and would consider a higher rate system with signal processing on board if it just works multi-channels well under Linux. I suppose a multi-channel digital audio I/O board would be just fine as long as I can get 16-20 analog channels converted up front. I am proposing developing this application under Linux but need suggestions on the most viable multi-channel audio in/out boards for use under Linux. Any suggestions ? Thanks ! Dave.

21 years, 5 months

[linux-audio-dev] Re: chebychev

by Bill Schottstaedt

> >It would be more efficient to just calculate the corect chebyshev in > >realtime, the problem is that they have lienar CPU cost with the number of > >harmonics, 20 harmonics for example will be pretty expensive. > > there's one problem i see: if we employ a chebyshev, it is going > to create harmonics no matter what amplitude our incoming signal > [...] > it seems hard to come up with a wave shaper that favours higher > harmonics,[...] I have only been skimming this discussion, but these caught my eye, and I'm wondering what you mean by "chebychev" here. If you're driving a sum Chebychev polynomials with the original signal, none of these statements is necessarily correct -- you can preload a table with the polynomials, so the computational load can be unrelated to the harmonic content; the content will depend on the input amplitude; high harmonics are easy -- just emphasize the relevant polynomial -- probably I don't know what you're talking about.

21 years, 5 months

[linux-audio-dev] Status of Agnula.org?

by Kevin Conder

My brother pointed this out to me... The Agnula project was supposed to have a November release. But neither he nor I are able to connect to their Web server, http://www.agnula.org/. It resolves to the IP address 62.94.60.107 for me but doesn't connect. Is this a technical problem or is this project dead? ===== -- kwconder at yahoo dot com __________________________________________________ Do you Yahoo!? HotJobs - Search new jobs daily now http://hotjobs.yahoo.com/

21 years, 5 months

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Linux-audio-dev November 2002