DTMF Signal high pass filter
조회 수: 3 (최근 30일)
이전 댓글 표시
I am doing a DTMF problem. And I am having problems creating a HighPass filter to recognize freq with 1209. Here is my HighPass Filter that I have done.
% Designing HighPass Filter
[num den] = butter(N,.125,'High');
[HighP f] = freqz(num,den,8000,Fs);
High = abs(fft(keys)'.*HighP); %keys is the input matrix to dial phone number
Any suggestions on how to Fix my HighPass Filter?
댓글 수: 0
답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 DTMF에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!