Spectral entropy (Shannon, base 2)

Normalises PSD to a probability mass function and returns its Shannon entropy in bits.

Usage

morie_dsp_spectral_entropy(psd)

Arguments

psd

PSD vector.

Value

Scalar in [0, log2(length(psd))].

References

Rangayyan & Krishnan (2015), Ch. 6, sec. 6.7; Inouye et al. (1991).

Examples

N <- 64L
uni <- rep(1, N)
morie_dsp_spectral_entropy(uni)
#> [1] 6