auparse_normalize_how - Linux
Overview
auparse_normalize_how is a tool for normalizing audio data to improve its consistency and comparability. It can be used to enhance the performance of audio analysis and machine learning tasks.
Syntax
auparse_normalize_how [OPTIONS] <INPUT_WAV_FILE> <OUTPUT_WAV_FILE>
Options/Flags
- -m, –method: Normalization method to apply. Choose from:
- peak: Normalize to the peak amplitude
- max_rms: Normalize to the maximum RMS amplitude
- desired_rms: Normalize to a desired RMS amplitude (provide with
-a
) - range: Normalize to a specific amplitude range (provide with
-r
) - match: Normalize to match the characteristics of another audio file (provide with
-n
)
- -a, –amplitude: Desired RMS amplitude for
-m desired_rms
. Default: -20 dBFS. - -r, –range: Amplitude range for
-m range
. Provide as a minimum and maximum separated by a comma (e.g., -5,-1). - -n, –match: Reference audio file for
-m match
. - -h, –help: Display help and exit.
Examples
- Normalize audio to peak amplitude:
auparse_normalize_how -m peak input.wav output.wav
- Normalize audio to maximum RMS amplitude:
auparse_normalize_how -m max_rms input.wav output.wav
- Normalize audio to -10 dBFS RMS amplitude:
auparse_normalize_how -m desired_rms -a -10 input.wav output.wav
- Normalize audio to a range of -10 to -5 dBFS:
auparse_normalize_how -m range -r -10,-5 input.wav output.wav
- Normalize audio to match the amplitude characteristics of reference.wav:
auparse_normalize_how -m match -n reference.wav input.wav output.wav
Common Issues
- Ensure that the input and output WAV files are valid audio format.
- If the
-m desired_rms
method is used, the provided amplitude should be within a reasonable range (-80 to 0 dBFS). - If the
-m range
method is used, the minimum amplitude should be less than the maximum amplitude.
Integration
- Audio Analysis: Normalize audio before feature extraction to improve the accuracy and consistency of analysis results.
- Machine Learning: Normalize audio before training or testing models to ensure that the data is well-distributed and suitable for modeling tasks.
- Data Preprocessing: Normalize audio as part of a data preprocessing pipeline for various applications, such as speech recognition or sound event detection.
Related Commands
- normalize_audio: A similar tool for normalizing audio using ffmpeg.
- sox: A versatile audio editing and processing tool that also includes normalization capabilities.