room acoustic Minimum phase - Home Theater Forum and Systems - HomeTheaterShack.com

Old 10-16-14, 11:42 AM Thread Starter
Shackster

Join Date: Oct 2014
Posts: 10
room acoustic Minimum phase

I am really interested to implement impulse response of room acoustic by using REW. I already evaluated impulse response of room acoustic using MATLAB based on Allen and Berkley's Image Method for Efficient Simulating Small-room Acoustics. See: J.B. Allen and D.A. Berkley, "Image method for efficiently simulating small-room acoustics", J. Acoust. Soc. Am., issue 65, number 4, April 1979. The computations are carried out inthe frequency domain, which allows fractional delays for all reflections.

everything works very good except that I have not be able to evaluate minimum phase and group delay of room Therefore, I am wondering could transfer my data which is measured impulse response of room from matlab to REW and then from that I calculate the minimum phase and group delay which I am very interested to know.

Thank you very much,
Sahar
saharhg is offline

Old 10-16-14, 12:47 PM
REW Author

John

Join Date: Apr 2006
Location: UK
Posts: 6,306
Re: room acoustic Minimum phase

Sure, but you'll need to convert your response into a format REW can import. See Importing Measurement Data. Note that the pcm format handles a stream of 16-bit signed PCM samples, sample rate must be either 44.1k or 48k for that - normalisation is recommended to get maximum signal-to-noise levels in the data to be imported.
JohnM is offline
Old 10-16-14, 02:14 PM Thread Starter
Shackster

Join Date: Oct 2014
Posts: 10
Re: room acoustic Minimum phase

Thank you very much for your response
I will try to transform my impulse response of room from matlab to Rew, besides i would like to measure this impulse response of room directly using REW, the charactersitic of room is :

size of room(2.1336 3.3528 3.9624),
location of microphone0.9144, 1.2192,1.524 ),
location of source0.3048 0.6096 0.9144)
Sampling rate: 16000;or 44100
Reflection can be from 0 to 0.9,
speed of sound:304 m/s
saharhg is offline

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