Improved Computing-Efficiency Least-Squares Algorithm with Application to All-Pass Filter Design

Figure 1

A 30th Hilbert transformer. (a) Impulse response. (b) Designed magnitude response. (c) Designed magnitude error response. (d) Phase response. (e) Phase error response. (f) Group delay response.

(a)

(b)

(c)

(d)

(e)

(f)