Reverted tests/scale_pcm.py

#!/usr/bin/env python3

import argparse

import os

import pathlib

import sys

import argparse

import pathlib

THIS_PATH = os.path.join(os.getcwd(), __file__)

sys.path.append(os.path.join(os.path.dirname(THIS_PATH), "../scripts"))

import concurrent.futures

import pyaudio3dtools

import pyivastest

import numpy as np

import concurrent.futures

def scale_folder(folder, factor):

    files = list(folder.glob("*.wav"))

    with concurrent.futures.ThreadPoolExecutor() as executor:

        executor.map(scale_file, files, files, [factor] * len(files))

def scale_file(file1, file2, factor = 1.0) -> None:

    """

    Scale file1 to file2

    """

    s1, fs = pyaudio3dtools.audiofile.readfile(file1)

    s2 = s1 * factor

    s2    = s1 * factor; 

    pyaudio3dtools.audiofile.writefile(file2, s2, fs)

if __name__ == "__main__":

    parser = argparse.ArgumentParser()

    parser.add_argument("folder", type=pathlib.Path)