Impulse Response from an audio file

Hey guys, how would I go about extracting an Impulse Response from a captured audio file?

Thanks

[Star Strider]

That depends what’s in the audio file.

It may be necessary to use the System Identification Toolbox to estimate the system that created the contents of the file (assuming that you know what the input was), then use the appropriate functions to generate and plot the impulse response of the identified system.

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[Alex Burns]

I have a collection of Impulse Responses taken (with a starter pistol) at various locations. I want to extract the IR and convolve them with other audio. Does the Sys ID Toolbox have the capability to do this?

Thanks

[Star Strider]

I’m still not certain that I understand what you’re doing.

It would be able to at least identify the impulse responses and create systems from them. From there, use the identified systems to create filters.

The most appropriate approach might be to use the Signal Processing Toolbox functions to identify the impulse responses as filters (it has that capability), and then filter the audio files using those filter functions.

I would experiment with both the System Identification Toolbox and the Signal Processing Toolbox with respect to identifying the systems that created the impulse responses to see which works best (most closely approximates the impulse response system) as a filter.

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