how to record mic input and pipe the output to another program
- by acrs
Hi everyone Im trying to follow a tutorial on generating truly random bits
How To Generate Truly Random Bits
This is the command from the tutorial but it does not work
rec -c 1 -d /dev/dsp -r 8000 -t wav -s w - | ./noise-filter >bits
I know i can record my mic input using
rec -c 1 no.wav
this is the command i tried using
rec -c 1 -r 8000 -t wav -s noise.wav | ./noise-filter >bits
but i get
root@xxc:~/cc# rec -c 1 -r 8000 -t wav -s noise.wav - | ./noise-filter >bits
rec WARN formats: can't set sample rate 8000; using 48000
rec FAIL sox: Input files must have the same sample-rate
I have complied noise-filter
noise-filter
I think the tutorial is using an older version of SOX and REC I'm using
sox: SoX v14.3.2 on Ubuntu 12.04 server
Can someone please help me ?