#!/usr/bin/python3

import os
import soundfile as sf

def exp_rate(insoundfile, outsoundfile, rate_ratio):
	data, samplerate = sf.read(insoundfile)
	new_samplerate = int(samplerate * rate_ratio)
	sf.write(outsoundfile, data, new_samplerate)

vigie_prefix = "Car721035-2021-Pass0-Z2"
device_prefix = "-AudioMoth-247AA5015FDF286B-"
prefix = vigie_prefix + device_prefix

indir = "raw"
outdir = "exp"

files = os.listdir(indir)

for wav in files:
    insoundfile = os.path.join(indir, wav)
    outsoundfile = os.path.join(outdir, prefix + wav)
    exp_rate(insoundfile, outsoundfile, 0.1)
os.system('split_5s -i exp -o split')