Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread James Courtier-Dutton
Dominique Michel wrote: > Le Tue, 15 Aug 2006 12:01:11 -0400, > Lee Revell <[EMAIL PROTECTED]> a écrit : > >> On Tue, 2006-08-15 at 16:51 +0100, Dan Mills wrote: >>> This is dependent on the microphone, preamp and sound >>> card in use, or for the output case, the soundcard, >>> power amp gain and

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dominique Michel
Le Tue, 15 Aug 2006 14:03:34 -0400, Paul Davis <[EMAIL PROTECTED]> a écrit : > > The db inside jack are dbFS with a maximum possible signal of 0 db. > > Now, both jacqeq and jackmix give you a maximum conrol level at +6dB. > > It mean at +6dB in those EQ is equal to 0dbFS in jack. > > there are n

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Paul Davis
> The db inside jack are dbFS with a maximum possible signal of 0 db. > Now, both jacqeq and jackmix give you a maximum conrol level at +6dB. > It mean at +6dB in those EQ is equal to 0dbFS in jack. there are no dB units inside of JACK. some JACK applications use dBFS, that much is true. however,

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dominique Michel
Le Tue, 15 Aug 2006 18:03:17 +0100 (BST), Dan Mills <[EMAIL PROTECTED]> a écrit : > > --- Dominique Michel <[EMAIL PROTECTED]> > wrote: > > > With jack, mixers as jackeq or jackmix are already > > using db scales. > > Ys, but they deal with gain which is unitless in > the DB system. > The

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dan Mills
--- Dominique Michel <[EMAIL PROTECTED]> wrote: > With jack, mixers as jackeq or jackmix are already > using db scales. Ys, but they deal with gain which is unitless in the DB system. What is being discussed is how to reference things to external signal levels (measured in volts, SPL or wha

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Patrick Stinson
I wrote a bunch of control-rate (midi) sequencer code in python that sends messages via OSC to supercollider. I even incorporated it into a QObject so you can just slap it into your PyQt4 UI, as I did mine. PyQt4 is great... check out scosc and scsynth http://www.patrickkidd.com/ lemmie know if

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dominique Michel
Le Tue, 15 Aug 2006 12:01:11 -0400, Lee Revell <[EMAIL PROTECTED]> a écrit : > On Tue, 2006-08-15 at 16:51 +0100, Dan Mills wrote: > > This is dependent on the microphone, preamp and sound > > card in use, or for the output case, the soundcard, > > power amp gain and speaker sensitivity (plus room

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Lee Revell
On Tue, 2006-08-15 at 16:51 +0100, Dan Mills wrote: > This is dependent on the microphone, preamp and sound > card in use, or for the output case, the soundcard, > power amp gain and speaker sensitivity (plus room > effects). > > You need to ensure that 120dbSPL at the transducer > does not clip

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dan Mills
--- conrad berhörster <[EMAIL PROTECTED]> wrote: > Whoow , that was fast > maybe i was a little bit misunderstandable. > > when i wrote about jack, i meant the jackserver. i > write an app, which has an > microphon input. now i will take this microphon > signal and show it as a gain > met

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread conrad berhörster
Whoow , that was fast maybe i was a little bit misunderstandable. when i wrote about jack, i meant the jackserver. i write an app, which has an microphon input. now i will take this microphon signal and show it as a gain meter. this is no magic and everything works. if i understand all of

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dan Mills
--- conrad berhörster <[EMAIL PROTECTED]> wrote: > Hello all, > > Does anybody know, how i can scale the incoming jack > signals to dbSPL, > which is in the range of 0 to 120. An is it possible > to calculate from dbFS > (which is used in normal soundapp in range -inf to > 12db) into dbSPL.

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Steve Harris
On Tue, Aug 15, 2006 at 03:30:47 +0200, conrad berhörster wrote: > Hello all, > > Does anybody know, how i can scale the incoming jack signals to dbSPL, > which is in the range of 0 to 120. An is it possible to calculate from dbFS > (which is used in normal soundapp in range -inf to 12db) into

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Jay Vaughan
- Midishare (can be driven in Java, Lisp, ...) *provided that I can get it to compile on my Gentoo box ... http://midishare.sourceforge.net/ I work with MidiShare quite a bit, and I have to say that if you get it going on your system, it really is one of the nicest, best-performing MIDI API's

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Dominique Michel
Le Tue, 15 Aug 2006 15:30:47 +0200, conrad berhörster <[EMAIL PROTECTED]> a écrit : > Hello all, > > Does anybody know, how i can scale the incoming jack signals to dbSPL, > which is in the range of 0 to 120. An is it possible to calculate from dbFS > (which is used in normal soundapp in range

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Stephen Cameron
--- _ langagemachine <[EMAIL PROTECTED]> wrote: > Hello. > > I write hoping that some nice LADs might enlighten me ? > > I've been feeling a recent itch to write a simple step-sequencer, > which outputs MIDI messages to the ALSA seq ; it is intended to drive > a drum machine. My ideal app is pro

[linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread conrad berhörster
Hello all, Does anybody know, how i can scale the incoming jack signals to dbSPL, which is in the range of 0 to 120. An is it possible to calculate from dbFS (which is used in normal soundapp in range -inf to 12db) into dbSPL. thanks c~

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread _ langagemachine
That is interesting anyway ; please do let us know when it comes out ;-) 2006/8/15, Lars Luthman <[EMAIL PROTECTED]>: On Tue, 2006-08-15 at 10:37 +0200, _ langagemachine wrote: > Hello. > > I write hoping that some nice LADs might enlighten me ? > > I've been feeling a recent itch to write a sim

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Lars Luthman
On Tue, 2006-08-15 at 10:37 +0200, _ langagemachine wrote: > Hello. > > I write hoping that some nice LADs might enlighten me ? > > I've been feeling a recent itch to write a simple step-sequencer, > which outputs MIDI messages to the ALSA seq ; it is intended to drive > a drum machine. My ideal

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread _ langagemachine
Waoo, I didn' t know that. Thanks Frank. 2006/8/15, Frank Barknecht <[EMAIL PROTECTED]>: Hallo, _ langagemachine hat gesagt: // _ langagemachine wrote: > NB : I am aware that Hydrogen is one fine app ;-), and probably a step > sequencer can be written as a Pd patch in seconds, but that is not >

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Frank Barknecht
Hallo, _ langagemachine hat gesagt: // _ langagemachine wrote: > NB : I am aware that Hydrogen is one fine app ;-), and probably a step > sequencer can be written as a Pd patch in seconds, but that is not > what I am after at the moment ; I insist on the user interacting with > big, Playschool-lik

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread _ langagemachine
Sorry, posted sent itself :-o Oh, you are right : there are 3 downloads : Mac, Windows and ChucK-less. I have downloaded the ChucK-less version, and it launches ChucK and Jack alright; i only had to create symlink ln -s /usr/bin/chuck to ./chuck The Java part is free but not open-source, though.

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread _ langagemachine
Oh, you are right : there are 3 downloads : Mac, Windows and ChucK-less. I have downloaded the ChucK-less version, and it launches ChucK and Jack alright; i only had to create symlink ln -s /usr/bin/chuck ./chuck 2006/8/15, Jonny Stutters <[EMAIL PROTECTED]>: _ langagemachine wrote: > The forme

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Jonny Stutters
_ langagemachine wrote: The former two seem slightly more complete ; in particular, I very much liked Breakage, which uses Chuck : http://www.blackholeprojector.com/ (Actually, this app would have been a very good fit, but it is Windows/Mac only :-o) Actually, if you look at the FAQ on the Brea

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Jan Weil
On Tue, 2006-08-15 at 16:00 +0700, Patrick Shirkey wrote: > _ langagemachine wrote: > > Hello. > > > > > The former two seem slightly more complete ; in particular, I very > > much liked Breakage, which uses Chuck : > > http://www.blackholeprojector.com/ > > (Actually, this app would have been a

Re: [linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread Patrick Shirkey
_ langagemachine wrote: Hello. The former two seem slightly more complete ; in particular, I very much liked Breakage, which uses Chuck : http://www.blackholeprojector.com/ (Actually, this app would have been a very good fit, but it is Windows/Mac only :-o) Why not port it to linux? --

[linux-audio-dev] Which sequencer framework for a simple MIDI drum looper ?

2006-08-15 Thread _ langagemachine
Hello. I write hoping that some nice LADs might enlighten me ? I've been feeling a recent itch to write a simple step-sequencer, which outputs MIDI messages to the ALSA seq ; it is intended to drive a drum machine. My ideal app is provided with a graphical UI which includes HUGE buttons (to give

Re: [linux-audio-dev] 2.6.15.7-rt

2006-08-15 Thread Florian Paul Schmidt
On Tue, 15 Aug 2006 10:02:25 +0200 Florian Paul Schmidt <[EMAIL PROTECTED]> wrote: > Given that you have setup rlimtis and rt lsm in equivalent ways, there > must be no measurable difference in achievable latencies. If you do > measure differences, some other factor of your setup differs, too. Le

Re: [linux-audio-dev] 2.6.15.7-rt

2006-08-15 Thread Florian Paul Schmidt
On Sun, 13 Aug 2006 15:07:04 +0200 Dominique Michel <[EMAIL PROTECTED]> wrote: > From http://www.jacklab.net/phpBB2/viewtopic.php?t=103 : > "Model 1: " Want to start a synth from time to time" > SUSE Standard kernel with PAM from Rui (also available in the jacklab > repository) > > Model 2 "Want