Public address system and method for an urban transit vehicle

Details Public address system and method for an urban transit vehicle Public address system and method for an urban transit vehicle

2006-06-27

2006-06-27

Pendleton, Brian Tyrone (Department: 2644)

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

C381S086000

Reexamination Certificate

active

07068795

ABSTRACT:
Apparatus and method for allowing an operator of a transit vehicle to make public address announcements to passengers internal and external to the vehicle. The safety of the vehicle and passengers is maintained through providing a hands-free directional microphone having noise canceling characteristics. The microphone is used as an input device for receiving an audio signal and provides the signal to a processing module that converts the signal into a digital signal. The digital signal is then processed by a digital signal processor to cancel undesirable noise common to a transit vehicle. The noiseless signal can then be converted into an analog signal and recorded within the memory of the public address system where, upon needed, the signal can be transferred to an output device such as a speaker system internal or external to the vehicle. After playback, the recorded message can also be easily repeated by means of a repeat switch.

REFERENCES:
patent: 3906472 (1975-09-01), Guadara et al.
patent: 4536887 (1985-08-01), Kaneda et al.
patent: 5193141 (1993-03-01), Zwern
patent: 5459702 (1995-10-01), Greenspan
patent: 5463694 (1995-10-01), Bradley et al.
patent: 5467071 (1995-11-01), Koenig
patent: 6522754 (2003-02-01), Long et al.

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