Voice messaging method for selective call receivers

Details Voice messaging method for selective call receivers Voice messaging method for selective call receivers

1989-12-26

1991-11-26

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Hearing aid

360 8, G10L 500

Patent

active

050688987

ABSTRACT:
Accelerated throughput of voice messages is accomplished by first filtering a normal 50-3000 Hz voice signal to a reduced bandwidth 350-1650 Hz (with loss of identifying features), the reduced signal then accelerated X3 and translated downward to bandwidth 50-3950 Hz for transmission. The receiver recovers the 350-1650 Hz signal.

REFERENCES:
patent: B262287 (1975-01-01), Yoshino
patent: 3646441 (1972-02-01), Magnuski
patent: 4495647 (1985-01-01), Burke et al.
patent: 4550425 (1985-10-01), Anderson et al.
patent: 4742514 (1988-05-01), Goode et al.
patent: 4754450 (1988-06-01), Lynk, Jr. et al.
patent: 4839923 (1989-06-01), Kotzin

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