Resources Contact Us Home
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 determining an object class of an object, from which light is emitted and/or reflected to a vehicle
Silicon-on-insulator (SOI) structure configured for reduced harmonics and method of forming the structure
Medical diagnosis, therapy, and prognosis system for invoked events and methods thereof
Communication apparatus, integrated circuit, and communication method
Weight-balanced polygonal mirror, light scanning unit using the polygonal mirror, and image forming apparatus
Method of publicly displaying a person's relationship status
Method and system for expanding axial coverage in iterative reconstruction in computer tomography (CT)
  Randomly Featured Patents
Integrated circuit packaging system with a stackable package and method of manufacture thereof
Technique for conveying overload conditions from an AC adapter to a load powered by the adapter
Resin composition for heat-shrinkable polypropylene shrink label and film comprising same
Power cable
Process for manufacturing a multi layer bumped semiconductor device
Method and apparatus for spraying textile fiber bales
Process for purifying a crude ethanol product
Articulating diamond-surfaced spinal implants
Burglar-proofing device for a personal computer
Method and system for selecting IDE devices