gtzan-10-sec / split_audio_files.py
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import os
import librosa
import soundfile as sf
# Define the input directory relative to the current working directory
input_dir = os.path.join(os.getcwd(), 'data', 'genres') # Assumes the genres folder is inside the data folder
# Define the output directory relative to the current working directory
output_dir = os.path.join(os.getcwd(), 'data_5') # Replace 'output' with your desired output directory name
# Create the output directory if it doesn't exist
os.makedirs(output_dir, exist_ok=True)
# Define the segment duration in seconds
segment_duration = 5
# Iterate over the genre folders in the input directory
for genre_folder in os.listdir(input_dir):
print(f"Genre: {genre_folder} @ {segment_duration} seconds")
genre_path = os.path.join(input_dir, genre_folder)
# Create a corresponding genre folder in the output directory
output_genre_path = os.path.join(output_dir, genre_folder)
os.makedirs(output_genre_path, exist_ok=True)
# Iterate over all audio files in the genre folder
for filename in os.listdir(genre_path):
file_path = os.path.join(genre_path, filename)
# Check if the file is in WAV format
if filename.endswith('.wav'):
# Load the audio file using Librosa
audio, sr = librosa.load(file_path)
# Calculate the total number of segments
num_segments = len(audio) // (sr * segment_duration)
# Divide the audio into segments and save them individually
for i in range(num_segments):
start_sample = i * sr * segment_duration
end_sample = start_sample + sr * segment_duration
segment = audio[start_sample:end_sample]
# Create a new filename for the segment
segment_filename = f"{filename[:-4]}_{i+1}.wav"
# Save the segment to the genre folder in the output directory
segment_path = os.path.join(output_genre_path, segment_filename)
sf.write(segment_path, segment, sr)
else:
print(f"Skipping {filename} as it is not a WAV file.")
# Define the output directory relative to the current working directory
output_dir = os.path.join(os.getcwd(), 'data_10') # Replace 'output' with your desired output directory name
# Create the output directory if it doesn't exist
os.makedirs(output_dir, exist_ok=True)
# Define the segment duration in seconds
segment_duration = 10
# Iterate over the genre folders in the input directory
for genre_folder in os.listdir(input_dir):
print(f"Genre: {genre_folder} @ {segment_duration} seconds")
genre_path = os.path.join(input_dir, genre_folder)
# Create a corresponding genre folder in the output directory
output_genre_path = os.path.join(output_dir, genre_folder)
os.makedirs(output_genre_path, exist_ok=True)
# Iterate over all audio files in the genre folder
for filename in os.listdir(genre_path):
file_path = os.path.join(genre_path, filename)
# Check if the file is in WAV format
if filename.endswith('.wav'):
# Load the audio file using Librosa
audio, sr = librosa.load(file_path)
# Calculate the total number of segments
num_segments = len(audio) // (sr * segment_duration)
# Divide the audio into segments and save them individually
for i in range(num_segments):
start_sample = i * sr * segment_duration
end_sample = start_sample + sr * segment_duration
segment = audio[start_sample:end_sample]
# Create a new filename for the segment
segment_filename = f"{filename[:-4]}_{i+1}.wav"
# Save the segment to the genre folder in the output directory
segment_path = os.path.join(output_genre_path, segment_filename)
sf.write(segment_path, segment, sr)
else:
print(f"Skipping {filename} as it is not a WAV file.")
# Define the output directory relative to the current working directory
output_dir = os.path.join(os.getcwd(), 'data_15') # Replace 'output' with your desired output directory name
# Create the output directory if it doesn't exist
os.makedirs(output_dir, exist_ok=True)
# Define the segment duration in seconds
segment_duration = 15
# Iterate over the genre folders in the input directory
for genre_folder in os.listdir(input_dir):
print(f"Genre: {genre_folder} @ {segment_duration} seconds")
genre_path = os.path.join(input_dir, genre_folder)
# Create a corresponding genre folder in the output directory
output_genre_path = os.path.join(output_dir, genre_folder)
os.makedirs(output_genre_path, exist_ok=True)
# Iterate over all audio files in the genre folder
for filename in os.listdir(genre_path):
file_path = os.path.join(genre_path, filename)
# Check if the file is in WAV format
if filename.endswith('.wav'):
# Load the audio file using Librosa
audio, sr = librosa.load(file_path)
# Calculate the total number of segments
num_segments = len(audio) // (sr * segment_duration)
# Divide the audio into segments and save them individually
for i in range(num_segments):
start_sample = i * sr * segment_duration
end_sample = start_sample + sr * segment_duration
segment = audio[start_sample:end_sample]
# Create a new filename for the segment
segment_filename = f"{filename[:-4]}_{i+1}.wav"
# Save the segment to the genre folder in the output directory
segment_path = os.path.join(output_genre_path, segment_filename)
sf.write(segment_path, segment, sr)
else:
print(f"Skipping {filename} as it is not a WAV file.")