audio format

[i0x71]

Hi,
Can you please tell me what fornat the example txt files are in ?
I am trying to use "arecord -t raw -f U8" and use unsigned 8 bit data but its not working.
Thanks

[eripe970]

Hey!

Hmm haven't used the "arecord" tool so not sure what the output is, the format is just floats that can be parsed by golang, like below, separated by new lines:

1.1
1.2
1.5
1.4

[i0x71]

In my case tge output is 8 but unsigned, so values are between 0 and 255

[eripe970]

Do you have an example of a file that you can't get to work?

[i0x71]

Yep, here is the output of "arecord -t raw -f FLOAT_LE"
Which produces
q.raw.gz
Float 32 bit Little Endian, Rate 8000 Hz, Mono

So far i tried converting sets of 8 bytes with binary.LittleEndian to float64 but that hasn't gotten anywhere.

Thanks

[i0x71]

Update:
I was able to convert that output to a float list, please see the attached.
Now i am getting
2021/06/22 19:12:31 http: panic serving 127.0.0.1:55964: runtime error: invalid memory address or nil pointer dereference
test.txt

[eripe970]

What code are you trying to run with the file? Do you have an example (maybe it's the 10s sample that breaks if there isn't enough data points available).

[i0x71]

Ah, im tring advanced example with the attached file

[eripe970]

Aha! Let me check it!