## split a WAV file into 8-minute parts ##
from pydub import AudioSegment
import math
import os
def split_wav(input_file, output_folder, chunk_length_ms=480000):  # 480000 ms = 8 minutes
# max length with google Speech Recognition: 8 min = 480000ms OK
    # Load the audio file
    audio = AudioSegment.from_wav(input_file)

    # Get the total duration of the audio in milliseconds
    total_duration = len(audio)

    # Calculate the number of chunks
    num_chunks = math.ceil(total_duration / chunk_length_ms)

    # Create output folder if it doesn't exist
    os.makedirs(output_folder, exist_ok=True)

    # Split the audio and export
    for i in range(num_chunks):
        start_time = i * chunk_length_ms
        end_time = min((i + 1) * chunk_length_ms, total_duration)

        chunk = audio[start_time:end_time]

        # Generate output file name
        output_file = os.path.join(output_folder, f"chunk_{i + 1}.wav")

        print(f"Exporting chunk {i + 1} of {num_chunks}...")
        chunk.export(output_file, format="wav")

    print("Splitting complete!")
# Usage
input_file = "r:\\sandi.wav"
output_folder = "r:\\output"
split_wav(input_file, output_folder)