Re: [linux-audio-dev] Re: Any interest in DVD-Audio?

2005-03-13 Thread Jussi Laako
On Tue, 2005-03-08 at 13:29 +0100, Jens M Andreasen wrote: Excuse me my ignorance, but: Is the spec open enough to create n-channel masters? Are there consumer players in existence with more than two channels out? (and here I do not mean the 5:1 audio from DVD movies.) You can play high

Re: [linux-audio-dev] Re: Any interest in DVD-Audio?

2005-03-13 Thread Erik de Castro Lopo
On Sun, 13 Mar 2005 20:16:14 +0200 Jussi Laako [EMAIL PROTECTED] wrote: You can play high quality 5.1 or 2.0 audio from SACD discs. And those also play on standard CD players. I personally would like to see SACD winning over DVD-A. Because of different coding, it also simplifies D/A

Re: [linux-audio-dev] Re: Any interest in DVD-Audio?

2005-03-13 Thread Fons Adriaensen
On Sun, Mar 13, 2005 at 08:16:14PM +0200, Jussi Laako wrote: You can play high quality 5.1 or 2.0 audio from SACD discs. And do nothing else with then at all. It's a completely closed format. And those also play on standard CD players. Only because the flip side *is* a CD, and without that

[linux-audio-dev] Lock-free gtk/jack interaction

2005-03-13 Thread Olivier Guilyardi
Hi, This may be a general IPC question, but I feel lost so I thought you may help me as you did in the past for some other issue. In Jackbeat (written in C), I have the gui running in one thread (the gtk main loop) and jack in its thread. Currently, when tracks get updated, the main loop sends a

Re: [linux-audio-dev] Lock-free gtk/jack interaction

2005-03-13 Thread Melanie
Wouldn't it be better to put the structures in shared memory and not use any locking / signalling at all? Melanie

Re: [linux-audio-dev] Lock-free gtk/jack interaction

2005-03-13 Thread Olivier Guilyardi
Melanie wrote: Wouldn't it be better to put the structures in shared memory and not use any locking / signalling at all? There's a need for syncing threads. It is not possible to touch the tracks/bpm/etc directly while jack's process callback is in the middle of its work. Some actions do not

Re: [linux-audio-dev] Lock-free gtk/jack interaction

2005-03-13 Thread Paul Davis
In Jackbeat (written in C), I have the gui running in one thread (the gtk main loop) and jack in its thread. Currently, when tracks get updated, the main loo p sends a message to the jack thread, and then waits for an acknowledgement. I currently use syscalls (message queues) for these messages,

[linux-audio-dev] [ANN] A-weighting IIR filter

2005-03-13 Thread Fons Adriaensen
Hi LAD, If ever you need a high precision A-weighting filter (as used for sound level metering), you can find one in the usual place: http://users.skynet.be/solaris/linuxaudio The tarball contains a C++ class implementing the filter (easily converted to C if you want that), and both a JACK

Re: [linux-audio-dev] [ANN] A-weighting IIR filter

2005-03-13 Thread Andrew Gaydenko
Fons, If I insert the filter such way (via JACK, jack-rack): jaaa_out - card_out - cable - card_in - THE_FILTER - jaaa_in, how can I interpret the result in terms of SNR? Andrew === On Monday 14 March 2005 02:32, Fons Adriaensen wrote: === Hi LAD, If ever you need a high precision

Re: [linux-audio-dev] Lock-free gtk/jack interaction

2005-03-13 Thread Jens M Andreasen
On Sun, 2005-03-13 at 22:12 +0100, Olivier Guilyardi wrote: Hi, ... I'm not sure this is a very clear description, but do you have any advice about this kind of issue ? Is my idea a good one ? Looking at your screenshot and reading the labels I wonder why the UI is so concerned about