Transforms

signal_transform(func)	Wraps an array function and returns a signal transform.
concatenate(signals, /[, axis])	Concatenates multiple signals along given axis.
snippet(z, /, t, n)	Extracts a snippet of a signal in time.
time_shift(z, /, shift[, crop])	Shift signal data by given number of samples or time.
freq_shift(z, /, shift)	Shift signal data in frequency by given amount.
fast_len(z, /)	Crops signal to an efficient length for FFTs.