Extracting Time-Domain Features from Audio Signals with MATLAB Implementation
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Resource Overview
Self-developed MATLAB source code for extracting audio signal time-domain features including short-term average zero-crossing rate and short-term average energy, featuring window-based signal processing and frame-wise parameter computation.
Detailed Documentation
I have developed MATLAB source code for extracting time-domain feature parameters from audio signals, specifically implementing algorithms for short-term average zero-crossing rate and short-term average energy. The implementation utilizes frame-based processing with Hanning windows, where signals are segmented into overlapping frames for feature extraction. The zero-crossing rate calculation detects sign changes between consecutive samples within each frame, while energy computation involves squaring and summing sample values. This code employs vectorized operations for efficient processing and includes parameter normalization for consistent feature scaling. I hope this implementation provides valuable reference for audio signal processing applications, demonstrating practical approaches to time-domain analysis with configurable frame size and overlap parameters suitable for various audio characteristics.
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