page A – 15
AirAura X1 / Dec 2016
A P P E N D I C E S
Common audio processing terms and the parts of the spectrum they
govern are at the bottom of the chart. The top part of the chart shows
the frequency range of common musical instruments heard on the
radio (male and female voice included).
Audio Terms and Wheatstone Processing
So how do you tweak a processor to change its sound “texture”? Let’s start with the
low end…
THUMP/RUMBLE/BOTTOM
These terms describe bass generally found at and below about 80Hz. Good stereo sys-
tems, closed or noise reduction headphones and car audio systems with subwoofers can
usually reproduce the audio way down here. Many times such systems even have their
own complex bass enhancement features. Wheatstone processors are equipped with a
very specialized bass system called “Bass Tools™.” In general terms Bass Tools gets real
bass on the air without it causing the problems commonly associated with “bass clippers.”
Using Bass Tools™ to add more Thump & Rumble is quite easy. By setting the Bass
Tools Style to Soft the algorithm automatically places additional emphasis on lower bass
frequencies. If the Style is set to Hard instead, bass “slap” will be more pronounced and
the emphasis on thickening the bass that the Soft style creates will be reduced.
“Subwoofer” algorithm places targeted enhancement on the frequencies between 20Hz
and 80Hz, and does not add bass harmonics. When the
Sub Bass
control is Off, enhance-
ment of very low frequencies is disabled and bass energy in that region remains just as it
was in the incoming program material.