Function pnpr

pnpr(
    spectrum: MagnitudeSeries,
    bin: number,
    radius?: number,
    guard?: number,
): number
PNPR — peak-to-neighbouring power ratio, in dB. A pure tone is far above its neighbours.
Parameters
- spectrum: MagnitudeSeries
- bin: number
- radius: number = 3
- guard: number = 1
Returns number