A simple LowPass Filter

2021 1 11
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更新时间：2021 1 11
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I need to design a low pass filter for a .wav audio signal
Fc= 2e3 Hz
Fs=4e3 Hz
using a hamming window and getting the frequancy resonce of the filter
I dont know where to start or how to get this data into matlab
any help pls

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回答（1 个）

Star Strider
Star Strider 2021-1-11

0 个投票

Using a window inplies a FIR filter. Start with the fir1 function to design it, and freqz to analyse it. Filter your signal with the filtfilt function.
a .wav file is an audio file, so use audioread to import it.

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muhammad ali
muhammad ali 2021-1-11
I can not utilize the givin data in the Fir1 filter . To get N or Rp or Rst
Star Strider
Star Strider 2021-1-11
I have no idea what problem you are having, or what your constraints are.
You described a FIR filter design that should be straightforward to implement.

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