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
Stevia formulation
Image processing apparatus, image registering method, program causing computer to execute image registering method, and recording medium in which program is recorded
Laser processing a multi-device panel
Method and system for facilitating micropayments in a financial transaction system
System and method for video encoding
Health monitoring of applications in a guest partition
Fabricated leaf tea products
  Randomly Featured Patents
Voice announcement management system
Method and apparatus for processing memory requests that require coherency transactions
Corrosion-resistant coated articles
Cable having translucent, semi-transparent or transparent ESD dissipative layer and/or metallic layer
Microelectronic device
Camera and lens protector
Medical handpiece
Method and apparatus for processing chain messages (SGL chaining)
Automobile auxiliary heater
Radio channel control method and receiving apparatus