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Im having trouble with the sound recorder app, so I tried arecord a.wav the recording sound is terrible.... I read the man page but did not see any provisions to change the sound recording parameters. How can I record s sound in ubuntu mate 18.04, or improve the quality of arecord?

check it out.

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2 Answers 2

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You can significantly change the audio quality using -f/--format (format name) for example (see man page):

arecord -vv --format=cd file.wav

Will record a snippet in "CD" quality (finish with Ctrl + C when done).

-f cd is format shortcut for (16 bit little endian, 44100, stereo) where default format is (Unsigned 8 bit, Rate 8000 Hz, Mono).

Some other examples:

arecord -vv -f=cd --duration=10 file.wav                # Same but with a fixed duration of 10 seconds
arecord -vv -f=cd --file-type raw | lame -r - file.mp3  # Record and save it as mp3
arecord --list-devices                                  # List all sound cards and digital audio devices
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Audacity audio editor has configurable output sound quality in Edit -> Preferences. Audacity can be installed in all currently supported versions of Ubuntu with the following command:

sudo apt install audacity

Audacity preferences

Audacity is designed for easy recording, playing and editing of digital audio. Supported file formats include Ogg Vorbis, MP2, MP3, FLAC, WAV, AIFF, and AU.

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