Example Project Topics

• Windows
  • New FFT window types
  • Explore window types not covered in class

• Spectrum Analysis
  • Short-time spectrum analysis of recorded data
  • Study of statistical spectrum estimation
  • Matching spectrum analysis parameters to human hearing
  • Alternative time-frequency representations (Wavelets, Wigner, ...)

• Sinusoidal Modeling
  • Readings in additive synthesis
  • Implement your own sines+noise analysis/synthesis system
  • Noise reduction based on sinusoidal modeling
  • Source separation based on sinusoidal modeling
  • Transient detection (for ``sines + noise + transients'' modeling)

• Short-Time Fourier Transform (STFT) based Analysis, Modification, and Resynthesis
  • Software system development
  • Noise reduction
  • Pitch detection/tracking
  • Time compression/expansion
  • Transform coding
  • Pitch-synchronous phase vocoder (adapt window to pitch period)
  • Signal reconstruction from the STFT magnitude only (phase discarded)
  • Spectral interpolation schemes to compensate for lost frames

• Software Development
  • Modify course Matlab examples to be compatible with Octave
    (See http://www.octave.org/.)
  • Develop missing components of the Signal Processing Toolbox for Octave (looking only at Matlab help info).
  • PD FFT-processing patches (see http://www.pure-data.org/)
  • LADSPA spectral-processing plug-ins (see http://www.ladspa.org/