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Speaker system
OF THE PREFERRED EMBODIMENT OF THE INVENTION Hereinafter the invention will be described by referring to the embodiments thereof shown in the drawing. The frequencies ...
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Elevator control system
Accordingly, the primary object of the present invention is to provide an elevator control system which is operable with a non-power stoppage power source of small ...
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Bass reflex type speaker system duct having multiple sound paths
The present invention has been designed to prevent leakage of mid frequency sound from the duct to thereby improve the quality of sound emanating from the speaker. To ...
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Muffler for an internal combustion engine
OF THE PREFERRED EMBODIMENT FIG. 1 depicts a cutaway showing of the muffler of the present invention, FIG. 2 depicts a partial cutaway showing of a second embodiment of ...
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Headset with limiter circuit
Having thus described our invention what we claim is: 1. A battery-free protective hearing aid headset for protecting the ears of the wearer from acoustical sound ...
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Routinable clock circuit
The present invention consists of a routinable clock circuit for use in the transmission of station and trunk identity data between a private automatic branch exchange (P...
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Arrangement for the transmission of speech according to the channel vocoder principle
The object of the invention is to provide a digital filter bank for a synthesizer of a channel vocoder constructed in digital technology which, given a relatively low ...
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Pulse width modulated signal amplifier
Accordingly, an object of the present invention is to provide a pulse width modulated signal amplifier which is free of the above described defects in the prior art. A...
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Amplifier system with AGC, as for an AM radio
What is claimed is: 1. A gain-controlled amplifier with tuned load comprising: first and second transistors of the same conductivity type having respectively small and ...
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Method for encryption of information
The inclusion in a GSM system of two or more time slots instead of one time slot for one and the same radio transmission in accordance with the aforegoing creates ...
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