Module audioio.audiotools

Tools for fixing audio data.

• despike(): remove spikes.
• unwrap(): unwrap clipped data that are folded into the available data range.

Functions

def jit(*args, **kwargs)

def despike(data, thresh=1.0, n=1)

Remove spikes.

If n data points stick out by more than a threshold, they are replaced by the mean of the two directly preceeding and succeeding data points.

Parameters

data : 1D or 2D ndarray

Data to be fixed in place.

thresh : float

Threshold defining a spike.

n : int

Maximum width of spike.

def unwrap(data, thresh=1.5, ampl_max=1.0)

Unwrap clipped data that are folded into the available data range.

In some amplifiers/ADCs clipped data appear on the opposite side of the input range. This function tries to undo this wrapping.

Parameters

data : 1D or 2D ndarray of floats

Data to be fixed in place.

thresh : float

Minimum difference between succeeding data points required for initiating unwrapping relative to ampl_max.

ampl_max : float

Maximum amplitude of the input range.