Download the 4th prototype of the Windows VST-Plugin (version 0.6 - 22/05/2010 - 188kB) : SH-BassEnhancer.zip or the MAC OS Audio Unit (AU) & VST (version 0.6 - 05/09/2010 - 586kB): SmallSpeakerBassEnhancerMAC.zip
For the reason that the plug-in development uses the JAVA framework you need to have an installed JAVA Runtime Environment.
If you don't have the JRE (JAVA Runtime Environment) installed then you'll get it here: http://www.java.com/download/manual.jsp
Just unzip the dedicated ZIP-File and copy the plug-in folder into your VST plug-in directory.
Apple Mac OS Audio Units and VSTs:
1.) Unzip the dedicated ZIP-File
2.) Copy SmallSpeakerBassEnhancer.vst to ~/Library/Audio/Plug-Ins/VST
3.) Copy SmallSpeakerBassEnhancer.component to ~/Library/Audio/Plug-Ins/Components
Important: To use the Audio Units you need to copy the *.vst as well.
The plug-in uses a technology called phantom fundamental which was already known to pipe organ builder hundreds of years ago.
Psychoacoustics shows, that a fundamental component can be heard even if it is just represented by its harmonics. An example would be two organ pipes playing at 100Hz and 150Hz where our brain creates a fundamental at 50Hz.
By using that technology small speaker with a cut-off frequency of 100Hz could be used to create a 50Hz phantom component which is just there because the psychoacoustic part of our brain extrapolates it.
The frequency range gets split up at the cut-off frequency to create harmonics for all tones below of that frequency.
Original Bass [Hz]:
Adds the original bass below of the cut-off frequency to the output. That is merely useful if your speaker can make use of that low frequencies.
Extended Bass [Hz]:
Adds the harmonics of the original bass fundamental to the output signal without the fundamental itself.
There is a need to attenuate the signal because the method increases the output amplitude. Furthermore, it makes sense to place a Compressor and Limiter behind the Small Speaker Bass Enhancer.
Disclaimer and License:
This Software is provided "as-is", without any express or implied warranty.
In no event will the author be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software except for commercial use.
Please contact me (Stephan Hotto) if there is a wish for a commercial implementation.