Info

此问题已关闭。 请重新打开它进行编辑或回答。

fda tool not meeting frequency specifications

1 次查看（过去 30 天）
random09983492
random09983492 2011-4-28
关闭： MATLAB Answer Bot 2021-8-20
I'm developing an audio equalizer using MATLAB's fdatool, and I'm noticing some very strange things are happening. For low-frequency bands (25, 40, 63, 100-Hz), fdatool simply doesn't match the frequency specifications that I input.
For example, if I try to create a Butterworth IIR LPF (fs=44100-Hz, fc=30-Hz, order=10), the magnitude response shows a filter that starts at 0-dB at 0-Hz, then the gain drops off linearly until I have about -200-dB at 30-Hz. Obviously the filter doesn't work, and I've verified that the magnitude response plot is indeed accurate to how the filter performs.
The odd thing about this is that if I use someone else's computer (running the same version of MATLAB), fdatool works perfectly and produces the magnitude response I am looking for (and sounds great too). I can't see any specifications that are different in any case.
It would be great if I could resolve this so that I could use my own computer to finish this project. Maybe someone else has experienced this as well? I am running R2010a.

此问题已关闭。

回答（0 个）

此问题已关闭。

标签

Community Treasure Hunt

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

Start Hunting!

Translated by