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adjusts the 'Master' channel's volume up by 1dB.
Can use command 'amixer' to see other channels :
Simple mixer control 'Master',0
Simple mixer control 'Capture',0
outputs a f=220Hz guitar string sound (fifth string A)
Replace "Master" with desired control name (e.g. Front, Earphone, PCM, etc.).
Now we can capture only a specific window (we have to chose by clicking on it)
ffmpeg complains about "Frame size must be a multiple of 2" so we calculate the upper even number with (g)awk trickery.
We remove the grep, we are already using (g)awk here ....why losing time with grep !!! ;)
aumix -v -5
Map these to key combinations in your window manager and who needs special buttons?
Records audio from your mic in FLAC (Free Lossless Audio Codec) format, starts only after it detects at least 0.1 seconds of noise and stops after 1 second of silence. You can adjust the percent values (sensitivity) to best fit your microphone and voice (0.1% if you have a great quality mic, higher if you don't, 0% does not trim anything).
Useful for speech recognition in conjunction with my previous command titled 'Google voice recognition "API"' (http://www.commandlinefu.com/commands/view/8043/google-voice-recognition-api).
Stream OGG vorbis over ssh.
This one doesn't need to convert to wav.
This will allow you to convert an audio file to wav format, and send it via ssh to a player on the other computer, which will open and play it there. Of course, substitute your information for the sound file and remote address
You do not have to use paplay on the remote end, as it is a PulseAudio thing. If the remote end uses ALSA, you should use aplay instead. If it uses OSS, you should berate them about having a lousy sound system. Also, you're not limited to transmitting encoded as wav either, it's just that AFAIK, most systems don't come with mp3 codecs, but will play wav files fine.
If you know SoX is installed on the remote end and has mp3 codecs, you can use the following instead:
cat Klaxon.mp3 |ssh [email protected] play -t mp3 -
this will transmit as mp3. Again, use your specific information. if you're not playing mp3s, use another type with the -t option
for when a program is hogging the sound output. finds, and kills. add -9 to the end for wedged processes. add in 'grep ^program' after lsof to filter.
Yet another x11grab using ffmpeg. I also added mic input to the capturing video stream using alsa. Yet I need to find out how to capture audio which is currently playing.
Record audio to an MP3 file via ALSA. Adjust -i argument according to arecord -l output.
Record from a webcam, audio using ALSA encoded as MP3, video as MPEG-4.