Mode Extraction by Inverse Filtering

Various methods are applicable for estimating spectral peak parameters:

(1)

Direct amplitude-response peak measurement on FFT magnitude data

• Center frequency
• Bandwidth

(2)

Weighted digital filter design

(3)

Linear prediction
(special case of (2))

(4)

Sinusoidal modeling
(like (1) but looking across multiple time frames)

(5)

Late impulse-response analysis
(useable with all methods)

(6)

Work over Auditory frequency scale such as the Bark scale (useable with all methods)