Impulse response measurement application with ESS method, purely made with Max/MSP/Jitter/Gen.
- Generate a test signal, record, and generate IR as wav file, all in the single patch.
- No external dependencies (it generates test signal with non-signal
gen, calculates non-RT convolution/deconvolution withjit.fft.) - Can generate test signals both of linear/log(Exponential) Swept Sine algorithms.
- Can record up to 4 audio channels at the same time.
- Can handle a test signal repetition & taking an average of them.
(2023-03-08)
- Fixed the problem that the initial phase was wrong in the calculation of Log-SS.
- Fixed the problem that the calculation fails when the number of samples of the test signal is larger than 100000 samples (due to the limitation of the for-loop in genexpr.)
(2018-09-27)
With the arrival of event-based gen, updated a part of sine-sweep signal generation from gen~ to gen(event base). Thanks to gen, now it can generate the test signal in a moment.
"ExpoChirpToolbox: a Pure Data implementation of ESS impulse response measurement", Katja Vetter & Serafino di Rosario (2011), https://wwws.uni-weimar.de/kunst-und-gestaltung/wiki/images/ExpoChirpToolbox-_a_Pd_implementation_of_ESS_impulse_response_measurement.pdf
"Simultaneous Measurement of Impulse Response and Distortion with a Swept-Sine Technique", Angelo Farina(2000), pre-print of the 108th AES Convention, 19-22
"Impulse Response Measurements",Angelo Farina, paper for the 23rd Nordic Sound Symposium, 27-30 September 2007. http://pcfarina.eng.unipr.it/Public/Presentations/aes122-farina.pdf
http://matsuuratomoya.com/blog/2016-06-11/log-sinsesweep-jitter-gen/
The MIT License (MIT)
Copyright (c) 2016 Tomoya Matsuura
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