Process EMG for biomechanics workflows — processEMG • PhysioMoCap

Applies optional band-pass filtering, rectification, RMS envelope extraction, optional low-pass smoothing, and optional MVC normalization.

Usage

processEMG(
  x,
  sampling_rate,
  bandpass = c(20, 450),
  envelope_cutoff = 6,
  rms_window_ms = 50,
  mvc = NULL,
  filter_method = c("butterworth", "moving_average")
)

Arguments

x: Numeric vector or matrix (time x channels).
sampling_rate: Sampling rate in Hz.
bandpass: Optional length-2 numeric vector (Hz). If NULL, no band-pass filtering is applied.
envelope_cutoff: Low-pass cutoff (Hz) applied to RMS envelope.
rms_window_ms: RMS window length in milliseconds.
mvc: Optional MVC value(s) for normalization.
filter_method: Filter method used in low-pass steps.

Value

A list with filtered, rectified, envelope, and (when mvc is provided) normalized.

References

Merletti R, Parker PA (2004). "Electromyography: Physiology, Engineering, and Non-Invasive Applications." IEEE Press/Wiley.

See also

rectifyEMG() for signal rectification, computeRMSEnvelope() for RMS envelope computation, normalizeEMG() for MVC or peak normalization, integrateEMGMoCap() for EMG-MoCap data integration.

Examples

set.seed(1)
emg <- matrix(rnorm(2000), ncol = 2)
out <- processEMG(emg, sampling_rate = 1000)