Audio Technologies
Signal Processing
Clarion products remain at the forefront of sound
quality and performance. Our source units have
features that allow your mobile audio system to
recreate sound that is closer to the original recording
than ever before. These features included advanced
signal restoration for compressed audio, digital equal-
ization, advanced D/A converters and digital storage
systems.
Clarion calls the concept of remaining true to the
original audio recording Sound Genesis. This is at the
heart of everything Clarion does.
BBE MP
Compressed audio files allow a large amount of
information to be stored in a small space. The draw-
back is that some of the audio information, particularly
in the high frequency range is lost.
Clarion introduced BBE MP (Minimized Polynomial
Non-Linear Saturation) in 2009. This is an advanced
audio processing technology that restores high
frequency content to not only compressed media files
(MP3, WMA, and AAC), but to CD recordings as well.
BBE MP can restore high frequency content all the
way up to 24kHz through oversampling at 48kHz.
Harmonic processing has been tailored to focus on
off-ordered harmonics. This is similar to what makes
vacuum-tube amplifiers sound warm and rich.
Here is a graphical example of how BBE MP
processes audio data and restorers high frequency
information.
The best way to demonstrate BBE MP is to let your
customers listen to an MP3 file on your display board and
turn the BBE MP processing On and Off.
BBE MP processing has four settings on Clarion source
units: Off, Low, Mid, and High. Depending on the quality
of the source being listened to, you may need to adjust
the BBE MP processing to achieve life-like sound.
13
This image shows a snapshot of the frequency
response of a conventional audio CD (16-Bit, 22kHz).
You can clearly see that frequencies above 22kHz
are rolled off.
This image shows the sme snapshot of time as the
first image, but after the track has been compressed
to a 128kHz MP3 file. There is no audio information
above 12kHz.
This image shows the exact same snapshot of time
after the signal has been processed by BBE MP. You
can see that high frequency content has been
restore right out to 24kHz.
This image shows how BBE MP can effectively process
an original CD quality recording and restore high fre-
quency content that is lost due to the limitations of the
CD format.
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