Precision Power MaxxBass - Manual (Page 6)

5
HOW DOES MAXXBASS WORK
MaxxBass ® uses advanced digital signal processing based on the
proven psychoacoustic Phenomenon of the Missing Fundamental. A
basic description and a
MaxxBass ® Signal Flow diagram are
provided for interested users.
MaxxBass ® first implements a crossover at the MaxxBass ®
Frequency. The MaxxBass ® Processor allows the choice of 60Hz,
generally suggested for 6-6.5" drivers, and 80Hz suggested for 4-
5.25" woofer drivers.
The low pass filter (LPF) output of the crossover extracts the bass
signal which is below the bass frequency response of the system.
This is the signal to be reproduced psycho-acoustically and only this
signal receives the
MaxxBass ® processing. It is significant to note
that unlike bass boosts, MaxxBass ® does not add or change the
processing of higher frequencies that can be reproduced by the
system.
MaxxBass ® does not change the artist's sound mix.
MaxxBass ® uses a patented digital signal processing algorithm to
calculate precise harmonic content information which is added back
into the LPF signal. The combined LPF and harmonics output is high
pass filtered, thus removing the original bass signal. The processed
signal is then added back into the original HPF signal and the final
output provides a signal that sounds like the original, but no longer
has un-reproducible low frequencies.