EMG Signal Analsis

Analzying Zygomaticus Muscle Signal in MATLAB using Digital Signal Processing techniques.

GitHub Repository

ksheersagaragrawal/EMG-Signal-Analysis ksheersagaragrawal/EMG-Signal-Analysis

Keywords

EMG Signal Analysis,Muscle Activation Signal,Anomaly Detection Raw Signal Processing, Time Domain Analysis,Filtering, Zero Padding, Windowing.

Procedure

  1. Raw Signal Analysis
    • Removal of power line interference using a notch filter.
    • Filtering out noise using a 4th order Butterworth Bandpass filter.
    • Full-wave rectification to zero-mean power.
  2. Time Domain Analysis
    • Calculation of Mean Absolute Value (MAV) and Root Mean Square (RMS).
  3. Frequency Domain Analysis
    • Fast Fourier Transform (FFT) to analyze frequency components.
    • Application of bandpass filters for specific frequency ranges.
    • Zero-padding to enhance frequency resolution.
    • Windowing to mitigate spectral leakage effects.
  4. Pattern Recognition
    • Recognition of sustained smiling patterns.
Learn more about the project by watching our analysis video. It provides a detailed explaination of the data aquisition and pre-processing of the raw signal captured.