Digital signal processor audio compression in an RF base station

Details Digital signal processor audio compression in an RF base station Digital signal processor audio compression in an RF base station

1990-12-07

1993-08-31

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 63, 455 72, H04B 700

Patent

active

052416895

ABSTRACT:
A radio frequency (RF) base station transmitter receiver (transceiver) system includes an audio compression arrangement that compresses a sum of multiple audio signals so that all signals within the sum are equalized to a substantially uniform audio output level despite differences in their input levels. Compression thresholds can be adjusted from a remote location. The RF base station provides audio signal compression using digital signal processing (DSP) techniques such that advanced features (e.g., noise blanking and hard limiting) and flexibility are built into the system. Line audio inputs from several sources are filtered, converted to digital signals, and processed by a digital signal processor (DSP). This DSP provides an audio compression function that selects and applies appropriate gains to the digitized audio signal. The compressed signal is converted to analog form, filtered and routed to a variety of destination such as a RF transmitter modulator or a land line.

REFERENCES:
patent: 3449684 (1969-06-01), Kagan
patent: 4110699 (1978-08-01), Bethards
patent: 4216427 (1980-08-01), Bethards
patent: 4323731 (1982-04-01), Hershberg
patent: 4355304 (1982-10-01), Kasuga et al.
patent: 4381488 (1983-04-01), Fricke et al.
patent: 4539707 (1985-09-01), Jacobs et al.
patent: 4630304 (1986-12-01), Borth et al.
patent: 4700361 (1987-10-01), Todd et al.
patent: 4700362 (1987-10-01), Todd et al.
patent: 4718116 (1988-01-01), Jacobs et al.
patent: 4809274 (1989-02-01), Walker et al.
patent: 4839906 (1989-06-01), Leveque et al.
patent: 4876741 (1989-10-01), Jacobs et al.
patent: 5016205 (1991-05-01), Shumway
Instructions for Audio Boards 19A129924G1-G3 Ericsson GE Maintenance Manual LBI-30705J (1977).
4006 Compression Amplifier, TELLABS Technical Manual 76-814006, (Feb. 2, 1977), (rev. B. Jul. 1989).
Linear LSI Data and Applications Manual 1985, Signetics, (1985).

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