I have a predicted acoustic transfer function (Pressure over Pressure) from my tailpipe to driver’s ear. I want to multiply the tailpipe recording of my actual exhaust with the transfer function to hear the sound at driver’s ear. How can I do that?
And yes you technical purists out there, I know the Pressure over Q is better, but I still want to use the Pressure over Pressure (P/P) function anyway
Solved! Go to Solution.
Since you said "multiply the tailpipe recording of my actual exhaust with the transfer function to hear the sound at driver’s ear" I assume you want to do this in the time domain and only have those two pieces of data, transmissibility (Pa/Pa) from tailpipe to driver's ear and operating data at the tailpipe?
If that is true, I would us the FILTER_FRF command in the time signal calculator. That would use the FRF / Transmissibility function to generate a filter that you filter the operating data by.
Bring the FRF / Transmissibility function into the Block Set Editor in the Time Signal Calculator. That will assign it as B1 and then refer to that in the FILTER_FRF command.
I think Kevin's suggestion is a great option ...
Also since you have never used the 'FILTER_FRF' command in time signal calculator to apply a transfer function as a filter to a time history recording I have detailed the the process a little more below: