The goal of this project is to create a program for generating
signals to be used for acoustical measurements such as impulse
and frequency response. The program will be based around a
GUI in order to make the process easier for the experimenter.
I am researching the different types of signals used to characterize acoustic
spaces and audio equipment.
So far, I expect to include:
Q: Interface in matlab? Are you crazy???
A: I actually have some thoughts on that....
I plan on using Matlab with
GUIDE
to create the GUI.
Q: So what is the advantage of this program?
A: It seems that most acousticians use the same types of tests when they are characterizing
either spaces or equipment. So, I thought that I would try to help out so they wouldn't have
to retype the same code all the time. If the basic functions are easily implemented,
I will look into avenues such as automated output sequences of test signals and data acquisition / processing algorithms.
Also, if it works well, it could save me a lot of time in the future.
Q: Save you time? On what?
A: I am working on a project with Countryman Microphones
that requires me to characterize an M-S
stereo microphone enclosure. This test generator will (hopefully) help me, so why shouldn't it help other people too?
like this guy...he needs all the help he can get.
keep on a-rockin' stereotypical audio engineer dude.
Q: What does Ron Jeremy have to do with acoustical measurements??
A: everything.
Timeline
Week 1: Decide to develop a retriggering / grainular processing plugin.
DONE!!
Week 2: Decide not to develop a retriggering / grainular processing plugin.
Decide instead to make a matlab GUI in GUIDE and start researching acoustical testing practices.
DONE!!
Week 3: Now that you (hopefully) know how acoustical characterization is done, write a
program that can generate at least one of the signals (probably start with the most useful one).
If possible, try to get some of the signal statistics on the GUI to give the user some feedback.
DONE!!
Week 4: Get duplexing to work in Matlab so that the acoustical system can be stimulated and measured
at the same time. Work on the data processing so that the generated data can be presented in a useful form.
See how difficult it is to do some basic things like saving files and polar plotting at specific frequencies.