View source: R/signal-wavelet.R
wavelet | R Documentation |
The code was translated from Matlab script written by Brett Foster, Stanford Memory Lab, 2015 with permission to use in 'RAVE'.
wavelet(data, freqs, srate, wave_num, demean = TRUE)
data |
- vector of time series to be decomposed |
freqs |
- vector of center frequencies for decomposition |
srate |
- sample rate (in Hz) |
wave_num |
- desired number of cycles in wavelet (typically 3-20 for frequencies 2-200). |
demean |
- whether to remove the mean of data first? |
Decompose time series data into time-frequency representation (spectral decomposition) using wavelet transform. Employs "Morlet" wavelet method (gaussian taper sine wave) to obtain the analytic signal for specified frequencies (via convolution).
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