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Redesign project into modular py_audio package#1

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Redesign project into modular py_audio package#1
Copilot wants to merge 6 commits into
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copilot/redesign-project-with-simplified-code

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Copilot AI commented Mar 3, 2026

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Replaces the monolithic Audio.py with a proper Python package and implements the two features listed as TODOs in the README (spectrum analyzer, bandpass filter).

Package structure

  • py_audio/io.pyread_audio(), write_audio() with float64 conversion and int16 normalization
  • py_audio/effects.pyreverse_audio(), change_speed() (resample), change_volume() (dB gain)
  • py_audio/analysis.pycompute_fft() (single-sided magnitude spectrum), spectrum_analysis() (full file analysis with peak frequency detection)
  • py_audio/filters.pybandpass_filter() using Butterworth SOS for numerical stability
  • py_audio/__init__.py — public API re-exports

Other changes

  • Added requirements.txt with minimum versions (scipy>=1.8.0 to address use-after-free CVE)
  • Added 25 unit tests covering all modules including edge cases (empty arrays, stereo, invalid params)
  • Added example.py as a runnable demo
  • Updated README.md with usage, API table, and project structure

Usage

from py_audio import read_audio, write_audio, reverse_audio, bandpass_filter, spectrum_analysis

sr, audio = read_audio("data/Faded.wav")
write_audio("data/rev.wav", reverse_audio(audio), sr)
write_audio("data/filtered.wav", bandpass_filter(audio, sr, 200, 4000), sr)

info = spectrum_analysis("data/Faded.wav")
print(f"Peak: {info['peak_frequency']:.1f} Hz")

All functions support both mono (1-D) and stereo (2-D) arrays. Core package depends only on numpy and scipy.

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Copilot AI and others added 5 commits March 3, 2026 01:20
Create a clean, modular Python package replacing the monolithic Audio.py:

- py_audio/io.py: WAV read/write with float64 conversion and int16 normalization
- py_audio/effects.py: reverse, speed change (resample), volume (dB gain)
- py_audio/analysis.py: single-sided FFT and full spectrum analysis
- py_audio/filters.py: Butterworth bandpass filter using SOS for stability
- py_audio/__init__.py: clean public API exporting all functions

Features:
- Type hints on all function signatures
- Comprehensive docstrings
- Edge case handling (empty arrays, zero data, invalid parameters)
- Mono and stereo support throughout
- Built on numpy and scipy only (no pandas/matplotlib in core)
…, and filters

Co-authored-by: AwaleSagar <33474772+AwaleSagar@users.noreply.github.com>
Co-authored-by: AwaleSagar <33474772+AwaleSagar@users.noreply.github.com>
Co-authored-by: AwaleSagar <33474772+AwaleSagar@users.noreply.github.com>
Copilot AI changed the title [WIP] Redesign project and complete with simplified code Redesign project into modular py_audio package Mar 3, 2026
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