[LAD] Re: Help with Alsa lib
Hi, I assume you mean snd_ctl_open. Here is a little example reference on how some C++ classes do it : https://github.com/flatmax/gtkiostream/blob/master/include/ALSA/Control.H#L95 There are also a swathe of other classes for playback, capture, the mixer, etc ... https://github.com/flatmax/gtkiostream/tree/master/include/ALSA In your particular situation here, I would find libasound_module_conf_pulse.so on your system and then try to work out why alsa isn't finding it ... some people will symlink it to where alsa is looking. Other ideas are to reinstall alsa-lib and alsa-utils. What distro are you using ? On 7/5/23 09:19, ollie razdow wrote: I'm a bit of a noob to linux audio programming, but I'm stuck with alsa lib and wondering if someone could help. When I use the function snd_dtl_open I get the error: Cannot open shared library libasound_module_conf_pulse.so (/usr/lib/alsa-lib/libasound_module_conf_pulse.so The library exists in /usr/lib/x86_64-linux-gnu/alsa-lib/l, but not /usr/lib/alsa-lib which doesn't exist. I suppose I could create a symlinked folder, but I'm wondering why alsa looks in that directory and what I can do get it working correctly? Thanks for any advice. ___ Linux-audio-dev mailing list -- linux-audio-dev@lists.linuxaudio.org To unsubscribe send an email to linux-audio-dev-le...@lists.linuxaudio.org ___ Linux-audio-dev mailing list -- linux-audio-dev@lists.linuxaudio.org To unsubscribe send an email to linux-audio-dev-le...@lists.linuxaudio.org
Re: [LAD] A History of Audio on Linux somewhere?
I realise that the original thread may have been more of a focus on Kernel level audio software, rather then user space audio software, however the old school clunky XForms UI were classic from back in those days. Found some screen shots of the dynamic audio software : https://web.archive.org/web/20001028203345/http://www.cse.unsw.edu.au/~flatmax/dynamic/dynamicScreen.html On 2/2/22 08:14, Matt Flax wrote: Back in 1999 and just before it was the crossover between ALSA and OSS. I remember getting help from mailing lists as a newbie, just making your first sound using C/C++ was difficult back then ! I don't know if this is the type of thing you are after, but this was my developer focus back in those days I produced two software packages which were very experimental and not heavily used by others, you can see their original pages here (called projects jumbled and dynamic) : https://web.archive.org/web/19991104182532/http://www.cse.unsw.edu.au/~flatmax/dynamic/jumbled/jumbled.html https://web.archive.org/web/19991104155359/http://www.cse.unsw.edu.au/~flatmax/dynamic/dynamic.html Interestingly it may have been using OSS ? I can't quite remember. The original "jumbled" software was a real time CD to MIDI wavetable player. The big idea was to play your CDs streaming through the AWE 32's RAM wavetable synthesiser. You could apply MIDI hardware effects, you can actually still see the keyboard controls : https://web.archive.org/web/2416211019/http://www.cse.unsw.edu.au/~flatmax/dynamic/jumbled/jumbledCommands.html It worked quite nicely, except for the fact that the RAM front side bus was too slow to pipe 44100 Hz CD audio through the MIDI's RAM. This gave the system a looping effect, where the audio playback would loop a few times before being reloaded with the next block of audio from the CD. The looping gave it it's name "jumbled". You could trigger a few MIDI keys and get the CD's audio played back at different pitches and also overly the AWE 32's effects. The next project was "dynamic" it simplified things to playing CDs direct to the sound card. You can also see the sunsite.unc.edu listing, with a sample mp3 up there. Project dynamic was unique in that it had backwards blocking mode - where blocks of audio were read from CD backwards, and also a reverse mode, where the blocks of audio were reversed before being played. http://www.ibiblio.org/pub/Linux/apps/sound/cdrom/project.dynamic.lsm Matt On 25/1/22 19:09, Philip Rhoades wrote: People, I am just a regular user of Linux audio but I am interested in the history of how software was developed and what problems they were meant to solve on Linux eg OSS, ALSA, Jack etc and more recently PipeWire. Is there such a documented history already in existence on the web somewhere? (ie NOT a HOWTO) - that would be intelligible to non-audio professionals? I am interested in learning and understanding more about audio and perhaps making better use of my system (Fedora 34 + Wayland soon to be updated to 35). Thanks, Phil. ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] A History of Audio on Linux somewhere?
Back in 1999 and just before it was the crossover between ALSA and OSS. I remember getting help from mailing lists as a newbie, just making your first sound using C/C++ was difficult back then ! I don't know if this is the type of thing you are after, but this was my developer focus back in those days I produced two software packages which were very experimental and not heavily used by others, you can see their original pages here (called projects jumbled and dynamic) : https://web.archive.org/web/19991104182532/http://www.cse.unsw.edu.au/~flatmax/dynamic/jumbled/jumbled.html https://web.archive.org/web/19991104155359/http://www.cse.unsw.edu.au/~flatmax/dynamic/dynamic.html Interestingly it may have been using OSS ? I can't quite remember. The original "jumbled" software was a real time CD to MIDI wavetable player. The big idea was to play your CDs streaming through the AWE 32's RAM wavetable synthesiser. You could apply MIDI hardware effects, you can actually still see the keyboard controls : https://web.archive.org/web/2416211019/http://www.cse.unsw.edu.au/~flatmax/dynamic/jumbled/jumbledCommands.html It worked quite nicely, except for the fact that the RAM front side bus was too slow to pipe 44100 Hz CD audio through the MIDI's RAM. This gave the system a looping effect, where the audio playback would loop a few times before being reloaded with the next block of audio from the CD. The looping gave it it's name "jumbled". You could trigger a few MIDI keys and get the CD's audio played back at different pitches and also overly the AWE 32's effects. The next project was "dynamic" it simplified things to playing CDs direct to the sound card. You can also see the sunsite.unc.edu listing, with a sample mp3 up there. Project dynamic was unique in that it had backwards blocking mode - where blocks of audio were read from CD backwards, and also a reverse mode, where the blocks of audio were reversed before being played. http://www.ibiblio.org/pub/Linux/apps/sound/cdrom/project.dynamic.lsm Matt On 25/1/22 19:09, Philip Rhoades wrote: People, I am just a regular user of Linux audio but I am interested in the history of how software was developed and what problems they were meant to solve on Linux eg OSS, ALSA, Jack etc and more recently PipeWire. Is there such a documented history already in existence on the web somewhere? (ie NOT a HOWTO) - that would be intelligible to non-audio professionals? I am interested in learning and understanding more about audio and perhaps making better use of my system (Fedora 34 + Wayland soon to be updated to 35). Thanks, Phil. ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] granular synth with recording
Is your artist name is He Can Jog ? Nice tracks, love the sounds ! Do you have any recommendations for apps ? The project is going to use a soundcard on a Pi with built in microphones and jack connectors in/out. Touchscreen. External speakers. For a very young person, so probably simple interface record, start/stop touch markers or some other type of interface - doesn't really matter, as long as it is fun ! thanks Matt On 14/12/21 5:45 pm, Erik Schoster wrote: Matt, Your requirements are my goals. Erik ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
[LAD] granular synth with recording
Hi there, Can anyone recommend one or many granular synth audio apps ? It would be great if it had the following things : * Easy enough for a kid to use * Graphical user interface which would work nicely on a small touch display * Work with regular ALSA devices * ability to record * granular style processing thanks Matt ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] 9 soundcards ?
What is the use case for many sound cards ? Is it channel count or the need for networking or both ? Matt On 12/11/19 8:41 am, Nick Copeland wrote: * I'd like to run up to nine soundcards with Jack. * Ha, I'll raise you two. I'd like to run 11 sounds cards with Jack. At 192 mega bored. Raise me if you dare, I have a good hand, it's prime. "at the end of the day its nil nil at half time???. Trevor Brooking *From:* Linux-audio-dev on behalf of lacu...@gmx.net *Sent:* Monday, November 11, 2019 8:26 PM *To:* linux-audio-dev@lists.linuxaudio.org *Subject:* [LAD] 9 soundcards ? Hello, * I'd like to run up to nine soundcards with Jack. * Eight times Expert Sleepers ES-8 via USB and one RME Madi HDSPe card on a PCIe slot. In Linux at 96 kilobauds. I read here https://jackaudio.org/faq/multiple_devices.html about clocking issues as each card is run by it's own clock. *Will the asynchronously clocked streams be handled and merged by Jack or is this an ongoing issue? * I imagine, if I'd feed analog outputs of one card into the analog inputs of another, this wouldn't be ideal. But I am wondering if Jack is handling the asynchronous streams in the software-domain without glitches ect. ? *With a powerful computer is the latency going to rise absurdly high? Any experience with this? * As Jack-Devel-List is dead, I'm asking here. With best regards, Manuel ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
[LAD] Pitch control kickstarter
Hey there, We have a fun piece of hardware for time control of audio and video. Some of you may be interested in it : https://www.kickstarter.com/projects/1250664710/audio-injector-time-master?ref=lad Matt ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org https://lists.linuxaudio.org/listinfo/linux-audio-dev
