I’m new to filtering, trying to use a low-pass filter to filter a sine wave with another high frequency sine wave on top of it. Using highpass(valArray, .03) I can effectively isolate the higher frrequency. But lowpass(valArray, .03) just appears to return the original signal (or something close to it).
It’s possible my setup is incomplete. I’m simply using the lowpass() and highpass() commands. But seems odd that the highpass filter works fine while the lowpass filter fails.

lowpass(valArray, .03);

highpass(valArray, .03)I’m new to filtering, trying to use a low-pass filter to filter a sine wave with another high frequency sine wave on top of it. Using highpass(valArray, .03) I can effectively isolate the higher frrequency. But lowpass(valArray, .03) just appears to return the original signal (or something close to it).
It’s possible my setup is incomplete. I’m simply using the lowpass() and highpass() commands. But seems odd that the highpass filter works fine while the lowpass filter fails.

lowpass(valArray, .03);

highpass(valArray, .03) I’m new to filtering, trying to use a low-pass filter to filter a sine wave with another high frequency sine wave on top of it. Using highpass(valArray, .03) I can effectively isolate the higher frrequency. But lowpass(valArray, .03) just appears to return the original signal (or something close to it).
It’s possible my setup is incomplete. I’m simply using the lowpass() and highpass() commands. But seems odd that the highpass filter works fine while the lowpass filter fails.

lowpass(valArray, .03);

highpass(valArray, .03) filtering, lowpass, highpass MATLAB Answers — New Questions

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