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INTRODUCTION ORBAN
MODEL
1010
Professional-grade netcasting requires audio processing similar to FM broadcast (al-
though there are some important differences in the peak limiting because of the
different characteristics of the pre-emphasized FM channel and the perceptually
coded netcasting channel). Your listeners deserve to get the best quality and consis-
tency you can provide. Good audio processing is one important thing that separates
the amateur from the professional.
The Orban Optimod-PC 1100, a
professional PCI sound card designed for streaming
media, provides “genuine radio”™ audio processing for Internet broadcasters. With
three on-board DSP's providing mixing, equalization, AGC, multi-band compression,
and look-ahead limiting, Optimod-PC 1100, especially when combined with aacPlus
encoding technology, delivers a polished and produced stream that has the same
loudness, consistency, and punch as satellite and major-market FM radio. In addition
to audio processing, Optimod-PC does internal and external audio mixing, leaving
the CPU power available for encoding with Opticodec-PC. Together, Optimod-PC
and Opticodec-PC provide a unique and tightly tuned system that offers the best
audio quality streams possible with today’s technology.
Opticodec-PC is available in two versions, LE, and PE. Opticodec-PC LE, Light Edition,
is compatible with all quality sound cards and encodes a single stream at bitrates
between 8 and 32 kbps. Opticodec-PC PE, Professional Edition, is offered solely in a
premium package coupled with an Optimod-PC and can encode multiple simultane-
ous streams at bitrates from 8 to 320 kbps; all streams carry the same Optimod-PC
processed audio content. While the companion Optimod-PC will ordinary be used to
process the stream for consistency and punch, it also comes with presets that allow it
to do simple protection limiting.
Streaming Infrastructure Block Diagrams
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/UDP
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PLAYER / ENCODER COMPUTER
AUDIO
INPUTS
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Network
To Server
From Encoder
Internet
To Internet
SERVER COMPUTER
Microphone
Pre-Amp
Mixer
Metadata
Figure 1-1: Typical streaming infrastructure where program material is sourced from a play-
out system application with live assist
