Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ultrasonic speech translator and communications system










Image Number 5 for United States Patent #5539705.

A wireless communication system undetectable by radio frequency methods for converting audio signals, including human voice, to electronic signals in the ultrasonic frequency range, transmitting the ultrasonic signal by way of acoustical pressure waves across a carrier medium, including gases, liquids, or solids, and reconverting the ultrasonic acoustical pressure waves back to the original audio signal. The ultrasonic speech translator and communication system (20) includes an ultrasonic transmitting device (100) and an ultrasonic receiving device (200). The ultrasonic transmitting device (100) accepts as input (115) an audio signal such as human voice input from a microphone (114) or tape deck. The ultrasonic transmitting device (100) frequency modulates an ultrasonic carrier signal with the audio signal producing a frequency modulated ultrasonic carrier signal, which is transmitted via acoustical pressure waves across a carrier medium such as gases, liquids or solids. The ultrasonic receiving device (200) converts the frequency modulated ultrasonic acoustical pressure waves to a frequency modulated electronic signal, demodulates the audio signal from the ultrasonic carrier signal, and conditions the demodulated audio signal to reproduce the original audio signal at its output (250).








 
 
  Recently Added Patents
Method for decoding a spatially multiplexed data signal using a maximum likelihood detection
Illuminating device
Tool box
Systems, methods and apparatus for payment processing
Heterogeneous language data typing without executable regeneration
Hot-press cushion material and manufacturing method of the same
Golf club cover
  Randomly Featured Patents
Rear conversion lens system
Zero velocity gear mesh differential
Secure optical information disc having a minimized metal layer
Method, apparatus and system for improved content management and delivery
Video recording and/or reproducing apparatus that records a signal indicating aspect ratio
Remote indicator
Biaxially oriented polyester film
Resistored sacrificial anode assembly for metal tank
Switch circuit and method of switching radio frequency signals
CMP pads and method of creating voids in-situ therein