renwl
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I lookup the table of the chebyshev filter. The chebyshev filter I want to find is a third order filter with 0.5dB passband ripple. The polynomial I found is S^3+1.253*S^2+1.535*S+0.716.
What does the coefficient mean? It’s normalized to cutoff frequency, isn’t it? What’s the transfer function if the cutoff frequency is 4kHz and the gain is 0dB?
Thanks.
What does the coefficient mean? It’s normalized to cutoff frequency, isn’t it? What’s the transfer function if the cutoff frequency is 4kHz and the gain is 0dB?
Thanks.