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Headphone Amplifiers
As in all systems and processes, the final delivery is the most critical. For
presenting binaural audio, headphone selection is critical. The final stage
before headphone selection (see separate headphone page) is the amplifier. A
high-power amplifier is critical for several reasons, chief of which are 1) high-fidelity headphones have high-impedance requiring a strong signal to
get a given sound pressure level, 2) the dynamic range of audio simulation
requires that signal headroom be reserved, and 3) the low-level setting requires
an excellent signal-to-noise ratio through the amplifier. AuSIM systems need to
be configurable for a wide variety of applications. The AuSIM-selected headphone
amplifiers provide that flexibility.
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Microphone Pre-Amplifiers
The base configuration for each GoldSeries product does not contain any microphones or
pre-amplifiers. These are critical components for many audio simulation applications,
especially voice communications. AuSIM has selected for resale several configurations
of mic pre-amplifiers at various appropriate value points.
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Miscellaneous
A variety of additional studio-quality audio components
are available to round out a system design, including patch panels,
mixers, special-effects generators, and power amplifiers.
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AD/DA Converters
AuSIM's generic term for an external device for converting analog signals to and from the digital
domain is "addabox". AuSIM has standardized on the optical Alesis Digital Audio Tape (ADAT) 8-channel
digital interface as its common component interchange. Having the ADC's and DAC's externally isolated
from the digital processing is a necessity to maintain the very high signal-to-noise ratios required
for the dynamic range of audio simulation. The external isolation also allows easy reconfiguration
and end-user upgrades for application-specific requirements. AuSIM continually maintains a variety
of addabox selections for resale at the best value for the dollar rate, independent of manufacturer.
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RME
RME Audio of Germany is a select manufacturing
partner for providing the highest quality analog/digital audio interfaces. RME equipment has
proven to be both robust and of the highest performance. As a bonus, RME products are feature-rich, making them incredibly useful in most laboratories and sound studios. AuSIM offers a
subset of RME's product line which complements AuSIM's systems in most applications.
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