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Transfer Function without direct input
PostPosted: Sat Jul 04, 2015 1:54 pm Reply with quote
Niick
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Joined: 07 May 2015
Posts: 25
Location: Portland, OR USA




Is it possible to acquire the transfer function of a system that you have no way of directly inputting a signal into? Like many OEM Automotive systems for example, don't have any kind of input, just the ability to play a CD or read files from a USB drive.
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PostPosted: Sat Jul 04, 2015 2:41 pm Reply with quote
AFMG Pedro Lima
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Joined: 05 Jun 2010
Posts: 266
Location: Germany




Hi,

There are a number of test CD´s with pink noise or the like you can use as stimuli signal. But you will only be able to look at the spectrum, not the transfer function.

I mean, the magnitude relationships per frequency bin you will be able to see, but not the phase.

HTH,
Pedro
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