Nick mentioned transfer functions in another post and I knew very little about it so I started trying to learn some more.
I started talking to an engineer at Cross Spectrum labs and he told me that with RTA analysis from a USB microphone like the UMIK-1 you only get spectrum analysis which consequently has you miss out on measuring how the entire system is performing and how it may be coloring the original signal. For that, you need to measure the transfer function which compares the input signal to the measured response and plot that (called a transfer function). A useful video illustrating this concept by one of their engineers is at the following link:
https://m.youtube.com/watch?v=uU8V5PkeoQg
Through use of a DSP downstream from the source signal (which is being measured as well), you can aim for a transfer function that is linear/flat showing that you are indeed reproducing the original signal without coloration (or accurately); which apparently you aren’t doing (as well?) with a simple RTA analysis (at least that is my understanding).
It made me wonder how many out there are measuring the transfer function when tuning and if people think it is useful. I have zero experience with this and am just learning but thought it was interesting.
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