Some comments


The speaker & cab model

The acoustic near-field model that handles the loudspeaker responses is quite good, as the resulting FFT plots are very similar to real plots. Using wavelet theory to analyse the responses can reveal some useful information about the transient behaviour of the near-field model. On the positive side, the response is quite fast and surprisingly transparent in the upper frequency range. As expected, the low frequency response contains less energy than a recorded response. In a microphone situation, we are dealing with an integrated response (the force seen by the diaphragm due to the presence of an acoustic pressure distribution). The calculated response relates to a value extracted at a single point and is unaffected by any 'inertial' effects associated with the recording chain.

This acoustic project shows that a numerical approach can, to some extent, be used to get an idea of the sonic characteristics of a general loudspeaker & cabinet set-up. 

 

The booth model

The current far field model, which simulates the 'cabinet in a booth' problem, gives a response that is too dry and lacks some kind of dimensionality. Probably a penalty for being too simple, so the modelling strategy may need to be updated. The dissipation phenomena present in a room are a bit tricky to nail down numerically, but vital in terms of the acoustic footprint of a room. 


Finally

My hat is off to Oliver Larkin for the excellent work he has done on the IPlug2 coding structure, which has allowed me the luxury of concentrating solely on the acoustic modelling part of this project. As you may have noticed, the media-related materials such as the website, sound clips, videos etc. are all a bit amateurish. However, the computational part is to some extent counterbalanced by years of experience in solving advanced physical problems using various numerical methods (though this is no guarantee for a good sounding cabinet model).