pyrex.signals.Signal

class pyrex.signals.Signal(times, values, value_type=None)

Base class for time-domain signals.

Stores the time-domain information for signal values. Supports adding between signals with the same times array and value type.

Parameters

timesarray_like

1D array of times (s) for which the signal is defined.

valuesarray_like

1D array of values of the signal corresponding to the given times. Will be resized to the size of times by zero-padding or truncating as necessary.

value_typeoptional

Type of signal, representing the units of the values. Values should be from the Signal.Type enum, but integer or string values may work if carefully chosen. Signal.Type.undefined by default.

Attributes

times, valuesndarray

1D arrays of times (s) and corresponding values which define the signal.

value_typeSignal.Type

Type of signal, representing the units of the values.

TypeEnum

Enum containing possible types (units) for signal values.

dt

The time spacing of the times array, or None if invalid.

frequencies

The FFT frequencies of the signal.

spectrum

The FFT complex spectrum values of the signal.

envelope

The envelope of the signal by Hilbert transform.

Methods

Type(value)	Enum containing possible types (units) for signal values.
copy()	Get a copy of the Signal object.
filter_frequencies(freq_response[, force_real])	Apply the given frequency response function to the signal, in-place.
resample(n)	Resamples the signal into n points in the same time range, in-place.
shift(dt)	Shifts the signal values in time by dt.
with_times(new_times)	Returns a representation of this signal over a different times array.