Avionics News April 2015 - 25

PHONE: 800-814-0123; 978-466-5992
WEBSITE: altoaviation.com
FACILITIES: 44,000 square feet between
its two main locations

WHAT THEY DO: ALTO Aviation designs
and manufactures premium cabin
audio and surround sound systems for
business aircraft.

FOUNDED: 1997 by Don Hamilton
and Steve Scarlata
AEA MEMBER SINCE: 2003

EMPLOYEES: 30

ALTO Aviation recently released its ACAPELLA
amplifiers to add audio to smaller airframes
without in-flight entertainment systems.
The ACAPELLA keypad allows passengers
to control audio from their personal
media devices connected to the
speaker system.

the gentlemen engineered a system for Gulfstream G4 and
G5 aircraft. After leaving the company, Bose contracted
with ALTO to handle all of the manufacturing, engineering
and customer support for the program. That system is
still standard on Gulfstream 450s and 550s, according to
Hamilton.
Mapping the acoustics
Today, more than 2,000 ALTO Aviation audio systems
currently fly in Gulfstreams and Citations, Falcons and
Embraers, even Sikorsky helicopters. Each one is customdesigned for their owner. ALTO Aviation's proprietary
nVELOP Digital Surround Sound and Acoustic Mapping
software helps the engineers decide which components
should go where.
"Our main software is a custom package we wrote
ourselves," Scarlata said. "As part of our development, we
have a cabin mockup in the back of our engineering lab.
When we're developing components, we can put them in
the Gulfstream-sized mockup for testing and recording. We
evaluate the components to make sure they're optimized

for that space. Our software enables us to easily and
quickly go through the measurement process.
"We can say, 'Show me the sound in seat one. Show
me the sound in seat two.' For example, I can see if we're
getting cancellation in the bass frequencies between
seats. The software helps us look at those frequencies and
alignment phases, and then we can carefully adjust those in
the signal processing."
After the system is installed, ALTO Aviation's acoustic
engineers visit the aircraft, inspecting and verifying that
the wiring and installation is correct. They then set about
the task of further customizing and fine-tuning the sound
experience using the company's acoustic mapping software
and specialized signal processing software.
"We check every loudspeaker and make sure it's free
from buzzes or rattling or any other issues that could be
caused by the installation process," Scarlata said. "With
a microphone, we measure every speaker in every seat.
That gives us an acoustical profile of the audio system in
Continued on following page
avionics news

*

april

2015

25



http://www.altoaviation.com

Avionics News April 2015

Table of Contents for the Digital Edition of Avionics News April 2015

Avionics News April 2015 - Intro
Avionics News April 2015 - Cover1
Avionics News April 2015 - Cover2
Avionics News April 2015 - 1
Avionics News April 2015 - 2
Avionics News April 2015 - 3
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Avionics News April 2015 - Cover3
Avionics News April 2015 - Cover4
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