About some type glitch in the frequency Response

2 次查看（过去 30 天）
Hari Ijjada
Hari Ijjada 2019-9-20
评论： Hari Ijjada 2019-9-21
i sent a wave with three frequencies 1000,4000,6000...I passed it through the 1250 cutoff lowpass frequency .but i found a glitch at the frequnecy around 1300 Hz to 1400 Hz...why i am getting this glitch and what is this glitch ?Capture.PNG
  2 个评论
Raj
Raj 2019-9-20
Information is insufficient to say anything.
1) Show your filter design.
2) Can you attach the full plot instead of a portion snapshot?
Hari Ijjada
Hari Ijjada 2019-9-21
carrier=single(Ac*cos(2*pi*Fc*t/Fs));
a=single(mod.*carrier);
%FPass=1200 Fstop=1500 Fs=25000 Fm=1000Capture.PNG
N = 700; % Filter order
F = [0 0.096 0.12 1]; % Frequency band edges
A = [1 1 0 0]; % Desired amplitudessingle
b = single(firls(N,F,A));
filt_out=single(conv(b,a));
DCB= dsp.DCBlocker('Algorithm','FIR','Length', 100);
demod=step(DCB,filt_out');
This is my filter...mod contains three frequencies 1000,4000,6000 Hz...

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Smoothing and Denoising 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by