19 Apr
2020
19 Apr
'20
2:39 a.m.
Hi John,
On 18/04/2020 12:05, John Murphy wrote:
If I simply '>' the input, which was going
to aplay, to a file, it's
done in a flash. Unplayable, but the file contains data. Could I write
a header first somehow? Or a container format would be OK.
there are for sure "correct" ways to do it. If you want to use pure bash magic
here you are:
Header of a wave file contains 44 byte. To extract it to a file use:
head -c 44 original.wav > header.bin
Now you can use your file from above (let's call it part.raw) and use:
cat header.bin part.raw > newname.wav
You should be able to play the new file. Be aware that the header is correct except for
the length information. You might fix this with
wavfix (https://github.com/agfline/wavfix). Furthermore if your parts are not cut at a
sample boundary (e.g. a normal wav file is stereo 16
bit per channel thus 4 byte per sample) you will get noise.
Gerhard