[h3, w1]=freqz( [1,-0.95],1,256,fs );
时间: 2023-10-04 20:05:12 浏览: 65
As an AI language model, I cannot execute this code as I do not have access to the required variables and parameters. However, I can explain what this code does.
The code uses the `freqz` function in MATLAB to compute the frequency response of a digital filter. The filter is defined by the coefficients `[1, -0.95]` for the numerator and `1` for the denominator, indicating a first-order IIR filter with a pole at `0.95`. The function returns two outputs: `h3` and `w1`.
`h3` is an array containing the complex frequency response of the filter. It has a length of 256, which specifies the number of frequency points at which the response is computed.
`w1` is an array containing the normalized frequency points at which the response is computed. It has a length of 256 and ranges from 0 to pi, corresponding to the frequency range from 0 Hz to the Nyquist frequency.
Together, `h3` and `w1` can be used to plot the magnitude and phase response of the filter.
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