A Python script to estimate the real sampling rate of an audio file based on the Roll-off frequency and visualize its frequency spectrum. This tool is particularly useful for detecting fake or upsampled audio files.

• Estimates the real sampling rate of audio files using the Roll-off frequency.
• Visualizes the audio's frequency spectrum and highlights the roll-off frequency.

Empirically, we found that roll-off freq works best when set to 0.998

Ensure you have Python 3.7 or above installed and the following dependencies:

pip install librosa numpy matplotlib

Usage:

python tmp.py

Input the waveform path

Visualization: