Adding noise to .wav files

1. Install FaNT (http://aurora.hsnr.de/download.html)

2. Install sox/soxi (http://sox.sourceforge.net/)

3. Generate the list of input files

   For example, to list all files ending with .wav under directory <dir>, one can use:

   find <dir> -type f -iname '*.wav' > wav_in.txt

   Do not use "." as a directory if you want absolute paths; use $PWD instead.

4. Generate the list of output files

   e.g.: sed 's/\.wav/.noisy.wav/g' wav_in.txt > wav_out.txt

5. Add noise using the script addnoise.sh

   e.g.: addnoise.sh -n <noisefile> -s <snr> wav_in.txt wav_out.txt

   Default rate is 16000Hz.
   Default output folder is the current one

   Use addnoise.sh -h for the list of all parameters.

6. (OPTIONAL) Delete RAW files

   e.g.: find <dir> -name '*.raw' -delete

addnoise