Linux-audio-user

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3 participants
20662 discussions

by Kjetil Matheussen

> > > Perhaps useful information for those who program, but irrelevant for > this thread, since WAV files > 2GiB don't require 64bit at all. > > libsndfile on Arch, this is what the OP does use, is configured with > "--prefix=/usr --disable-sqlite" and it's the latest official upstream > release without patches and no changes excepted of > sed -i 's|#!/usr/bin/python|#!/usr/bin/python2|' > src/binheader_writef_check.py \ > src/create_symbols_file.py programs/test-sndfile-metadata-set.py > sed -i 's|python|&2|' src/Makefile.am > > My guess is that libsndfile on 32 bit arch is not compiled with _FILE_OFFSET_BITS set to 64, for some reason.

9 years

everything stops after 2.1GB

by J. C.

Hey hey again, sorry to be back so soon. But both jack_rec and jack_capture with formats ranging from wav, w64 to caf, break off after 2.1GB filesize. Since all of these are uncompressed and the other variables stay the same, this equals six hours, twelve minutes and 49 seconds. My jack_capture commandline currently looks like this: jack_capture -as -f caf -b 16 -c 1 -p system:capture_1 $FILENAME I get no complaints, JACK is still running and the system is fine. I'm using jack_capture 0.9.71 from Arch AUR. Can anyone think of the issue in question or a solution or tests to approach the problem? Thanks and best wishes, Jeanette -------- When you need someone, you just turn around and I will be there <3

9 years

everything stops after 2.1GB

by Kjetil Matheussen

> I didn't manage to get to the bottom of which piece of software was causing the problem. Sorry, it is both jack_rec and jack_capture. Both use libsndfile, and neither should behave differently when running on a 32 bit OS. >*From the POV of libsndfile, it has had Large File Support (which *makes file offsets 64 bit signed values) on 32 bit systems for over a decade. J.C: Could it be that your libsndfile is that old? > However, it is possible for other software using libsndfile incorrectly > (ie using a 32 bit integer to store file offsets) to cause this sort > of a problem, but then I would expect it to go wrong on 64 bit systems > because `int` is 32 bits there too. However on 32 bit Linux systems, > `long` whereas it us 64 bits on 64 bit Linux systems. Yes, but neither jack_rec or jack_capture uses long for this (jack_capture uses int64_t), and jack_rec doesn't even use a counter, it just writes and writes until it stops. jack_capture has a counter, but that counter is only used when writing wav files, and only used to keep track of when to start writing on a new file when reaching the 4GB barrier.

9 years

Music: jumanmai

by jonetsu

This one is somewhat on the smoother side, incorporating various percussive elements. https://soundcloud.com/nominal6/jumanmai Enjoy. Comments welcomed. Cheers.

9 years

Help with mixing/mastering an EP

by Emily Fox

Hi all :) I only recently found this list, and did not realise there were so many people out there making music with open source, it's pretty awesome <3 I am currently making an EP, and my mixing/mastering skills are ok, but not exactly honed yet! I would really appreciate another pair of ears or more in the process, so if anyone would be up for giving my mixes a listen and giving me some feedback, that would be greatly appreciated. Please let me know if so, but FYI timescales are quite short, so it will only be over the next few days/week probably. Links to my various pages are on my website (http://www.emilyfoxmusic.co.uk/), and particularly visit my YouTube if you want to have a hear at the kind of thing I'm doing. The EP page for info about that is on Kickstarter here: https://www.kickstarter.com/projects/1664667971/emily-fox-makes-a-real-ep If anyone's up for lending me a pair of ears, that would be totally amazing. Thanks a lot, Emily

9 years

Re: [LAU] Using commandline app to mark/detect sounds above a threshold

by Kjetil Matheussen

> > On 07.11.2016 11:32, J. C. wrote: > > Hey hey, > > I tried to record over long periods of time (7-9 hours), using jack_rec, > which > > apparently relies on libsndfile for writing audiofiles. I started out > using > > .wav, which broke off after 6:12:49 (2.1G). Next time, I tried using the > file > > extension .w64, which yielded the same result. > > > > So, which format, or extension, would work for such periods of time? > > Have you tried with jack_capture? > > It uses libsndfile, too for codecs, but can dump raw samples to disk if > you tell > it to. > > So, if libsndfile should be the limiting factor, try dumping the raw > frames and > later analyze those. > > libsndfile is not the limiting factor. It's the wav format that doesn't support large files. (The "raw" format is also handled by libsndfile, but again, libsndfile is not to blame here, so that doesn't matter.) > jack_capture -f raw -b FLOAT snoring.bin > > Besides this option (and -f w64 and -f CAF which has been suggested), jack_capture continue writing to new files in case you try to write more data than is supported, so you can even use the default wav format for large files.

9 years

Recording long tracks with jack_rec (libsndfile?)

by J. C.

Hey hey, I tried to record over long periods of time (7-9 hours), using jack_rec, which apparently relies on libsndfile for writing audiofiles. I started out using .wav, which broke off after 6:12:49 (2.1G). Next time, I tried using the file extension .w64, which yielded the same result. So, which format, or extension, would work for such periods of time? Thanks and best wishes, Jeanette -------- When you need someone, you just turn around and I will be there <3

9 years

Using commandline app to mark/detect sounds above a threshold

by J. C.

Hey hey again, the next thing I'm looking for is a program to detect volume over a certain threshold, which can print out a marker there. This function should - at best - be able to ignore new peaks within a certain period of time, like a gate with very long release times. To elaborate the scenario: I'm recording myself sleeping, to a) find involuntary actions and b) do quick narrations of dreams, should I wake up and remember anything. So, I'd like to jump to the short moments of "action" within the relative silence. Any help is appreciated, thanks for staying with me. Best wishes, Jeanette -------- When you need someone, you just turn around and I will be there <3

9 years

Music Made With Linux - Luka Prinčič: Requiem For The Future: A.I. [video & audio]

by Luka Prinčič / Nova deViator

hija all, yesterday I finished a video and published the album release on bandcamp... The visual performance piece "Requiem for The Future" for which I created music was premiered on 14. October. Since the music was made very early in the process I managed to create a whole release including a physical manifestation in a form of custom-made usb in a fold, designed and printer and bound localy and able to offer that on the premiere. so few weeks later here's a video for an edited release (not exactly how the music was in the performance, but very close). the music was made in Renoise, and I used some older materials of mine (granulated stuff in Pure Data, glitches from "cat /dev/sda | /dev/snd") and reworked number of field recordings. the video is using stock footage from archive.org (attribution cc licence) but glitched using ffmpeg and SoX and edited in Kdenlive. video: https://www.youtube.com/watch?v=HkFonGImAh0 bandcamp: https://novadeviator.bandcamp.com/album/requiem-for-the-future patreon post: https://www.patreon.com/posts/requiem-for-7131878 the video has a connection to the live visual performance in the fact that part of the performance were also two dogs doing a dog choreography and the concept of the performance which deals with the imaginary time when there are no humans left on earth, only A.I. and animals/nature and how do we imagine they would co-exist. more about the piece: http://aksioma.org/requiem/index.html a bit on the process of glitching the video material: http://nova.deviator.si/development-log/making-of-requiem enjoy! btw: if you want the USB, there's very few copies left... -- Luka Prinčič / Nova deViator / http://deviator.si - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://novadeviator.bandcamp.com | http://patreon.com/novadeviator http://wndv.si | http://kamizdat.si | http://emanat.si

9 years

ANN: jack-matchmaker 0.5.0

by Christopher Arndt

jack-matchmaker --------------- Version 0.5.0 is out with some breaking and other minor changes: Changes: * Reorganize command line options: -l/--list-ports is replaced by -o/--list-outputs and -i/--list-inputs, which can be given on their own or together and in combination with the -a/--list-aliases option. * Remove prefixes and separators from port and connection listings (so you can more easily parse the output in shell scripts or pipe the output of jack-matchmaker -c into a file and directly use it with the -p/--pattern-file option). * Add --version command line option. * Exclude currently unused alsainfo module from distribution. * Some internal code re-formatting for PEP-8 conformity. * AUR package added. Where to find it: GitHub: https://github.com/SpotlightKid/jack-matchmaker PyPI: https://pypi.python.org/pypi/jack-matchmaker AUR: https://aur.archlinux.org/packages/jack-matchmaker/ Share & Enjoy, Chris Arndt

9 years

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Linux-audio-user