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The FMX™ Stereo Broadcast System
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English
Abstract
A new broadcast service, developed jointly by CBS and the National Association of Broadcasters, has proven highly effective for improving the quality and range of FM stereophonic reception. Compatible with existing service, the new transmission format additionally incorporates a compressed stereo difference signal, in quadrature at 38 kHz. A unique adaptive expander in receivers provides 20 dB attenuation of noise and distortion components under conditions of adverse reception. The stereo service area typically is increased three-fold, to the geographical limits of equivalent monophonic reception.
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Citation
Torick, E., "The FMX™ Stereo Broadcast System," SAE Technical Paper 860122, 1986, https://doi.org/10.4271/860122.Also In
References
- Finger R. A. Torick E. L. “FM Receivers in Automobiles: A Case for Diversity Reception,” IEEE Trans. Consumer Electronics CE-27 February 1981
- Electronic Industries Association “Multichannel Television Sound - BTSC System Recommended Practices,” EIA Television Systems Bulletin 5 July 1985
- Torick E. L. Keller T. B. “Improving the Signal-to-Noise Ratio and Coverage of FM Stereo Broadcasts,” J. Audio Eng. Soc. 33 December 1985
- Gravereaux D. W. Stebbings D. W. Kadin J. B. Cugnini A. G. “Re-Entrant Compression and Adaptive Expansion for Optimized Noise Reduction,” J. Audio Eng. Soc. 33 December 1985