Difference between revisions of "Sound"
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| − | + | [[Category:Peerd]][[Category:Peerix]] | |
| + | =Useful applications for software DSP= | ||
| + | *Echo cancelling for audio conferencing, kareoke | ||
| + | *Use of [[w:Virtual Studio Technology|VST]] plug-ins or other callback based software [[w:Digital signal processing|DSP]]: Robot voices, vocoder, delay, flanger. | ||
| + | =Further research= | ||
| + | Open source allback based software DSP. Have found these before. | ||
| + | *Review notes and links | ||
| − | + | Hardware sound drivers | |
| + | *[http://www.alsa-project.org/ ALSA] | ||
| + | Synchonous callback based audio server | ||
| + | *[http://jackaudio.org/files/docs/html/index.html jackd] | ||
| + | |||
| + | =Troubleshooting= | ||
Here are some commands that will allow you to test the audio system for correct operation. | Here are some commands that will allow you to test the audio system for correct operation. | ||
*alsamixer - [[ANSI]] [[GUI]] to the [[ALSA]] mixer controls (VERY USEFUL) | *alsamixer - [[ANSI]] [[GUI]] to the [[ALSA]] mixer controls (VERY USEFUL) | ||
| Line 9: | Line 20: | ||
*amixer | *amixer | ||
*vi .asoundrc - edit the [[ALSA]] configuration file usually found in ~ | *vi .asoundrc - edit the [[ALSA]] configuration file usually found in ~ | ||
| − | *lspci - list current [[PCI]] interfaces | + | *lspci - list current [[w:PCI|PCI]] interfaces |
*alsactl store|restore - lets you save|load the current [[ALSA]] driver settings | *alsactl store|restore - lets you save|load the current [[ALSA]] driver settings | ||
*speaker-test - play some pink noise and cycle through available channels | *speaker-test - play some pink noise and cycle through available channels | ||
| − | + | ||
| + | =Resources= | ||
*jackd - the audio server http://jackit.sourceforge.net/ | *jackd - the audio server http://jackit.sourceforge.net/ | ||
*amsynth - emulation of an analogue synthesiser http://amsynthe.sourceforge.net/amSynth/ | *amsynth - emulation of an analogue synthesiser http://amsynthe.sourceforge.net/amSynth/ | ||
*Debian sound configuration http://xtronics.com/reference/Debian-sound.html | *Debian sound configuration http://xtronics.com/reference/Debian-sound.html | ||
Latest revision as of 08:48, 26 December 2006
Useful applications for software DSP
- Echo cancelling for audio conferencing, kareoke
- Use of VST plug-ins or other callback based software DSP: Robot voices, vocoder, delay, flanger.
Further research
Open source allback based software DSP. Have found these before.
- Review notes and links
Hardware sound drivers
Synchonous callback based audio server
Troubleshooting
Here are some commands that will allow you to test the audio system for correct operation.
- alsamixer - ANSI GUI to the ALSA mixer controls (VERY USEFUL)
- lsmod - lists current kernel modules and what they are used for (VERY USEFUL)
- aplay - play some sound
- amixer
- vi .asoundrc - edit the ALSA configuration file usually found in ~
- lspci - list current PCI interfaces
- alsactl store|restore - lets you save|load the current ALSA driver settings
- speaker-test - play some pink noise and cycle through available channels
Resources
- jackd - the audio server http://jackit.sourceforge.net/
- amsynth - emulation of an analogue synthesiser http://amsynthe.sourceforge.net/amSynth/
- Debian sound configuration http://xtronics.com/reference/Debian-sound.html
