new_swdft_demod {swdft}

Constructor function for class 'swdft_demod'

Description

Constructor function for class 'swdft_demod'

Usage

new_swdft_demod(x, f0, A_t, Phi_t, fitted, y, y_smooth, smooth, order,
  passfreq)

Arguments

x

numeric vector

f0

numeric scalar. Frequency to demodulate

A_t

extracted amplitude from y_smooth

Phi_t

extracted phase from y_smooth

fitted

fitted values

y

non-smoothed demodulated signal

y_smooth

smoothed demodulated signal

smooth

character. Type of smoothing to use, accepts either 'ma', 'double_ma', or 'butterworth' (the default)

order

moving average parameter if 'smooth' argument equals 'ma' or 'double_ma'. Defaults to 5

passfreq

numeric frequency used as the passfreq in the low-pass filter

Value

list with the following elements

• coefficients. A matrix of parameters, the three columns are: 1. amplitude 2. phase, and 3. frequency. There is only more that one row used when multiple frequencies are fit sequentially.

• fitted. fitted values of cosine regression model

• residuals. residuals of cosine regression model

• data. original signal used to fit cosine regression

• list with the filter used ('smooth') and parameters ('order' for 'ma' or 'double_ma', 'passfreq' for butterworth)

• list w/ the demodulated signal, and smoothed demodulated signal