 |
|
|
|
|
|
|
|
|
 |
|
 |
|
Contact Us
|
|
|
|
|
|
|
|
Morset Sound Development
+47 73915000
Persauneveien 25
7045 Trondheim, Norway
contact@winmls.com
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-
WinMLS 2000 Forum
-
This forum has been retired and will no longer be monitored.
You can find our new forum at www.winmls.com/board.
| | | |
Subject measuring time variant systems
Date
Fri Jan 30 2004 08:54
Author Knut Inge Hvidsten
(kih@ffi.no)
|
|
Hello. I`m in the process of purchasing a personal license for home use (although I`m not shure where I would get that 8 digit code from, do I have to d/l and install the demo before paying?)
My real question would be if there is a clever way to measure time variant systems using mls or log-swept sine methods? PReferreably in such a way that time/frequency resolution can be adjusted post measurement.
My application would be getting a (large) set of IRs from a rotating speaker. One way would be disengaging the motors and manually move the speaker at constant angular intervals between each measurement. If, say, 256 measurements are needed, this would require a lot of work as compared to letting the motors run and then taking the weekend off :-)
could winmls accept a synch input (say a short audio burst/impulse at angle0) ?
Or would this be better accomplished writing a matlab application that generate a series of stepped increasing-frequency sines and measure the amplitude and phaseshift of each?
I can see this also having some relevance to measuring directivity of loudspeakers as well as some hrtf stuff?
best regards
Knut Inge Hvidsten
FFI (Norwegian Defence Research Establishment)
multimedia signal-processing, NTNU
|
|
|
Click here for this discussion's index
|
|
|
|
