Re: [linux-audio-dev] Radio Scanner Recorder

not that i know of. i'd love something like this too (as long as it was a jack client!). i almost wrote a jack client to do this a while ago. if this was done as a jack client, it would be pretty easy to modify the existing jackrec (i think that's the one) example client. jackrec works roughly like this: - opens a file to record to - process gets n samples, which it copies to a record ringbuffer - a worker thread sleeps until it has got some samples from process. it wakes up and writes them to the file - repeat the last 2 steps until done, then close the file and exit here's how i think the client you describe would have to be designed. instead recording all the time, your write thread would not write until the signal level crossed a certain level threshold. to track this you would need an envelope follower with a fast attack and a long release on the signal. when the signal level exceeds the threshold, you start writing to the already opened file. when it falls back down below the threshold you stop writing and close the file. if your program was really smart, it would already have a second file open ready to write to so that if the signal rose above the threshold before it was able to close the old file and open a new one, it would be able to write to the new file without interruption. if it were less smart it would immediately open the new file after closing the old one, and with a big enough ringbuffer that may be ok. good luck! ian On Fri, 2005-08-26 at 21:47 -0400, Guillaume Filion wrote: -- ian esten <deviant(a)custard.org>