Here's a Python implementation of an audio equalizer using PyAudio and NumPy for signal processing:

To use this equalizer:

1. Install the required packages: pip install -r requirements.txt
2. Run the program: python main.py
3. The equalizer will process audio in real-time with the preset band gains
4. Press Enter to stop the equalizer

The implementation uses FFT to split the audio into frequency bands and applies gain adjustments to each band. You can modify the band gains in main.py to adjust the equalization curve.