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Phase response and using fourier transforms to get time responce
Posted 8 gen 2013, 18:46 GMT-5 Acoustics & Vibrations Version 4.2a, Version 4.3 0 Replies
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I've been operating under an assumption thath i'm begining to question. Here it is
What i want to do,
1. calculate the frequency domain response of a room. Then i want to extract the time domain result from that.
2. Take FFT of an input time signal time signal, and convolve it with the the frequency response of the structure at a certain point to get how the time domain signal would look like it.
The problem i'm running into is i can't seem to get the phase from comsol. i only get amplitude.
Here is how i'm building the model.
2d, pressure acoustics frequency domain. Sound hard boundaries (all exteriors)
pressure source line inside the 2d rectangle, amplitude 1 Pa.
Does this look like a resonable way to do things. I'm trying to avoid using time domain, because of the long solution time and less adaptability.
i also want to compare measured responces to comsol results and phase seems like an important part of it.
Hello Mustafa Abbasi
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