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You should decompose your goal into several steps easier to solve. This will have two advantages: It will be easier to solve, The resulting code will be clearer and more reusable. The scripts below basically follows these steps: Generate raw statistic files. An easy way is to append the file size and the file name in a temporary file named after the ...


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There are some generic and driver-specific config files in /usr/share/alsa/init/, where you can specify settings like ENV{ppercent}:="75%" and ENV{pvolume}:="-20dB" (pvolume = playback volume, cvolume = capture volume, etc.). /usr/share/alsa/init/default should already contain those settings, so you can use it as an example. You can force ALSA to ...


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Linux has multiple virtual consoles. Ctrl+Alt+Fn switches between these consoles. When you switch from console 7 to console 2, the input and output peripherals are re-routed from console 7 to console 2. When console 7 is inactive, it has no access to the input/output peripherals: the display isn't shown on the screen, the applications don't receive keyboard ...


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A while back, people used computer terminals to input data into, or display data from, a Unix mainframe. If any of this terminal users wanted to, let's say, cat /dev/zero, the output was not broadcasted to all terminals/users connected to the same mainframe (that's because it was a multi user system, and each user could run it's tasks without affecting other ...


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AFAIK mp3info write only ID3v1 tags. You can check it with something like eyeD3 (a tool written in python): eyeD3 -1 file.mp3 (to check ID3v1) and eyeD3 -2 file.mp3 (to check IDv2, which is read by recent players). You can also use eyeD3 to write v1 or v2 tags. For instance, you can edit v2 tags with: eyeD3 -2 -a "The Artist" -A "Album Name" -t "Title of ...


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First of all, I think the question is off-topic here. Second, heater = water boiler? Then: Can it be done in real time? Basically, yes and not. What you are asking is to perform some "narrow-band" (meaning you are interested in specific frequencies) noise cancelling. If you look for articles (scientific papers) about "active noise cancelling" (ANC) you ...



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