Something I've been wondering about recently is this - if you implement
a digital filter, how do you maintain stability when it's pushed into
self-oscillation? Most "real" synths seem to put out a slightly clipped
sinewave when in self-oscillation. Might it be as simple as an atan()
clipper in the feedback loop?
Gordon
I'm resending this mail (something is very wrong somewhere). Sorry if
anybody got a duplicate.
a2jmidid is daemon for exposing legacy ALSA sequencer applications in
JACK MIDI system. It is based on jack-alsamidi-0.5 (jackd alsa seq midi
backend) by Dmitry Baikov. The main purpose is to ease usage of legacy,
not JACK-ified apps, in JACK MIDI enabled systems.
It is tested, and works, here, with current SVN jack. ATM it may or may
not work with other variants.
Planned features/improvements:
* One JACK client per ALSA sequencer client
* Improved build system (autotools) and support (better handling) for
other JACK variants (older MIDI API variants, jackdmp)
* More control on what ports to bridge (currently bridging is fixed to
non-hardware ports).
* Real daemonization with log file, init.d script, etc.
If someone wants to contribute please, contact me, or send patches, or
request inclusion (Gna! a2jmidid project). As usual, packagers are more
than welcome too.
Homepage with screenshots: http://home.gna.org/a2jmidid/
Tarball download: http://download.gna.org/a2jmidid/
--
Nedko Arnaudov <GnuPG KeyID: DE1716B0>
jack_mixer version 6 "Dance of the headless corpse" released.
jack_mixer is GTK (2.x) JACK audio mixer with look similar to it`s
hardware counterparts. It has lot of useful features, apart from being
able to mix multiple JACK audio streams.
Changes since version 5:
* Fix building against jack 0.102.20
* Handle python prefix different from install prefix
* Fix LASH-less operation
* Update install instructions after lash-0.5.3 and phat-0.4.1 releases
* Apply Markus patch (thanks!) for sr #1698 (can't restore session using LASH)
Homepage with screenshots: http://home.gna.org/jackmixer/
Download: http://download.gna.org/jackmixer/
--
Nedko Arnaudov <GnuPG KeyID: DE1716B0>
Hi folks
I've just released a new tarball of nekobee, my TB-303 plugin for DSSI.
Changes between 0.1.5 and 0.1.6 are:
* the configure script doesn't look for gtk1.x any more (thanks Juuso
Alasuutari)
* the release times of the envelopes are tweaked to eliminate an
unattractive bloppy noise on note off with certain keyboard controllers
* the volume has been reduced to around 1/5 of previous versions (in
line with other DSSIs), and an atan() waveshaper has been added to give
it a bit of crunch and rein in the excesses of the resonant filter
* the filter parameters have been tweaked to more closely reflect the
sound of the "18dB/oct" filter in the 303.
Try it out, have fun, and let me know if you run into any problems. Or
in fact, let me know if you *don't* run into any problems ;-)
Gordon
Hi,
trying lash-0.5.3 here, weired things happened:
I set up a simple project with only 1 lash_synth, the lash_synth
was connected to an alsa-sequencer keyboard port and to jack.
After saving, closing and restarting that lash-project,
the alsa-sequencer connection wasn't restored, until I launched an
innocent "aconnect -il" in an other terminal.
Funny, no?
Reason is I think, that after polling for alsa-seq events, always
only 1 event was red via snd_seq_event_input().
Attached patch cures & simplifies things by avoiding the poll() call
and using pthread_cancel() to stop the thread.
Karsten
Hi,
i'm kinda sorta in a way planning to build my own effects box. And i'm looking
around for embedded boards + cpu's + fpu's which would have the required
performance to be able to run some "simple" effects like FreeVerb, some
compressor etc (of course with low latency of 16 frames/perdiod or
something)..
Any hints/suggestions?
Regards,
Flo
P.S.: I was looking at this baby:
http://www.glomationinc.com/product_9302E.html
For 65$ (ca. 50 euros) it looks lie a bargain, but it seems its FPU is
supported by gcc only with a patch. And i'm also not sure how much processing
power this MaverickCrunch has [FLOP numbers are hard to find]..
--
Palimm Palimm!
http://tapas.affenbande.org
The Epia 5000 soundcard works at low latencies, but the sound quality is
not very good. The M-series has "decent" onboard sound. I think it has
less to do with the digital side than the analog... the M-series has
more "oomph". I'd try the 600 MHz fanless version. It should be plenty
of horsepower to do stomp box processing. It's been out a long time;
everything should work right out of the box with any recent distro.
Tell us how it goes, Florian!
-Ben Loftis
>From: Arnold Krille <arnold(a)arnoldarts.de>
>
>> Next I will attempt to write a nonlinear reverb. Useful for
>> drums and vocals as well. Something new if nobody already has
>> written one.
>
>Like the TAP Reverberator? Which has several different engines/methods...
No, I don't think so. TAP Reverberator looks like old comb/allpass
reverberator. The reverbs I'm refering to were responsible for
the familiar drum reverbs 20 years ago.
Juhana
--
http://music.columbia.edu/mailman/listinfo/linux-graphics-dev
for developers of open source graphics software
Hmm... I noticed CAPS plugins already have the Dattorro's plate
reverb. It is the vocal reverb I implemented now, as I thought
there was an urgent need for one. Does nobody use CAPS plate reverb
for vocals? Its design is of Lexicon type!!
However, I added early reflections and I'm prepared to write true
stereo-to-stereo version (CAPS is simply summing left and right
channels to mono).
Next I will attempt to write a nonlinear reverb. Useful for
drums and vocals as well. Something new if nobody already has
written one.
Juhana
--
http://music.columbia.edu/mailman/listinfo/linux-graphics-dev
for developers of open source graphics software
