CHAPTER 7: SYSTEM DESIGN AND INTEGRATION TOOLS
34

Using MAPP Online Cinema

MAPP Online Cinema is compatible with the following oper-
ating systems:
■Windows
■Linux®
■Unix®
■Mac OS® 10.4 and later

Downloading and Installing MAPP Online Cinema

To use MAPP Online Cinema, you can register at the follow-
ing link:
http://meyersound.com/products/mapponline/cinema/
register/
After entering your registration information, an email will be
sent to you with your user name, password, and the MAPP
Online Cinema download location. On-screen instructions
will guide you through the download and installation pro-
cess.
The MAPP Online Cinema client software is regularly
upgraded to add support for the latest Meyer Sound loud-
speakers, as well as to add feature enhancements. Most
upgrades are downloaded automatically when logging on to
a MAPP Online Cinema session. The MAPP Online Cinema
database includes all Meyer Sound EXP screen channel
loudspeakers, surround loudspeakers, subwoofers, and
processors.

SIM 3 MEASUREMENT SYSTEM

The SIM 3 audio analyzer is a high-resolution audio mea-
surement system comprised of software, hardware, micro-
phones, and accessory cables. The SIM 3 is optimized for
measuring audio frequencies with resolutions up 1/48th of
an octave, allowing you to apply precise corrections to bal-
ance system response using frequency and phase domain
information.

Source Independent Measurement Technique

The SIM 3 audio analyzer implements Meyer Sound’s source
independent measurement technique, a dual-channel
method that accommodates statistically unpredictable exci-
tation signals. Any excitation signal within a desired fre-
quency range can be used to obtain highly accurate
measurements for acoustical or electronic systems. For
example, concert halls and loudspeaker systems can be
captured during a performance and used as a SIM 3 test
signal, so you can:
■View measurement data as amplitude versus time
(impulse response) or amplitude and phase versus fre-
quency (frequency response)
■Utilize a single-channel spectrum mode
■View frequency domain data within a logarithmic fre-
quency axis
■Determine and internally compensate for propagation
delays using the SIM 3 Delay Finder

SIM 3 Applications

The SIM 3’s primary applications are testing and aligning
loudspeaker systems, which entails:
■Measuring propagation delays between subsystems to
determine appropriate polarities and delay times
■Measuring variations in frequency response caused by
the acoustical environment and the placement and inter-
action of loudspeakers to determine corrective equaliza-
tion
■Optimizing subwoofer integrations
■Optimizing loudspeaker arrays
The SIM 3 is also versatile and accurate enough for the fol-
lowing applications:
■Microphone calibration and equalization
■Transducer evaluation and correction
■Echo detection and analysis
■Vibration analysis
■Architectural acoustics
■Underwater acoustics