10.4 Audio Recording
To record audio from the microphone we can use the powerful graphical audacity or the simple command line application arecord.
For the command line arecord
simply provide a file name into which the recording will be
saved. Start speaking and then type
Ctrl-C to terminate the
To improve recordings from the computer’s microphone it is recommended
to provide the command line option
-f S16_LE, which specifies an
audio format known as Signed 16 bit Little Endian, which thus uses a
higher resolution of 16 bit sampling rather than the default 8 bit
arecord -f S16_LE myrecording.wav
To transcribe the recording to text see transcribe.
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