White Papers
Programmers Guide To Omnia.11
Written by Denny Sanders - Omnia Audio
As a person who was a Programmer and Operations Manager in the broadcast industry for many years, I realize the constant battle that one has when it comes to audio processing. On one hand, there is a need for audio integrity, that is to say the clarity and definition of the program feed. On the other hand, we have the commercial realities of the marketplace, which is to punch your station through the competitive fray with loudness and impact. Until now, this has always been a tradeoff. You gave up some of one for some of the other. Or a lot of one for a lot of the other.
Until now, the tradeoff of sonic integrity to many was not so critical. So long as the station sounded loud and somewhat dynamic on the FM band, all was well in the world.
But at Team Omnia, we realized that the old rules were rapidly falling away. We needed to address the fact that there are now competitive playback options and streams coming from a variety of different sources, many of them with superb audio quality and integrity. Your competition is not simply on the FM band anymore. Yet, you still have to face your FM competition. You really have two battlefields which, until now, were pretty difficult to address simultaneously.
Method To Improve Conventional FM-Stereo Transmission Performance, Reduce Multipath, and Provide Increased Protection To The Baseband Spectrum
Written by Frank Foti, Omnia Audio June, 2010
The FM-Stereo transmission system employed in worldwide broadcasting has been in place since 1961. The rules governing stereophonic performance have not been altered since the mid 1980’s (in the USA) when they were modified to allow an additional 0.5% total modulation (maximum of 110% total), for every 1% of SCA modulation, if an SCA was being utilized. The rules governing the requirements of the FM-Stereo baseband signal are quite explicit, and leave little - if any – room for improvement of the stereo transmission system.
This paper will express, in detail, a method utilizing single sideband suppressed carrier (SSBSC) modulation of the stereophonic subcarrier in the FM multiplex baseband that is compatible with existing radio receivers. Additionally, there are multiple overall benefits to the broadcast signal, which are perceivable to the listener. They reduce multipath induced distortion, and offer additional protection to the spectrum used for RDS, SCA signals, and HD-Radio content - thereby improving data robustness in the receiver.
Omnia-6EX and -6EXi - Features and Benefits
Audio Processing and the Competitive Landscape
Edited by Kirk Harnack - Executive Director International Business Development Telos – Omnia – Axia
Less than a dozen manufacturers around the world comprise the majority of all audio processor manufacturers for radio broadcasting service. Of these, only two companies, Omnia and Orban, enjoy worldwide acceptance and popularity of their offerings.
Cleaner Yet Still Loud
Audio processing for conventional broadcast transmission (FM and AM) has reached extreme levels. Various methods available today are capable of creating LOUD competitive signals, but at the expense of perceptible quality. What causes this, and what can be done… again… to raise the bar?
More Articles...
- Sonic Tonic for Audio Coding
- 5.1 Surround Sound Compatibility Within HD Radio And The Existing FM-Stereo Environment
- The Killer App for FM: 5.1 Surround Sound
- Quality, Clarity, and Competitive On-Air Processing
- Injecting Excitement Back Into Radio!
- Initiating the Surround Sound Era for Digital Radio
