Device and method for ultrasonic transmission of audio

Abstract

A device and a method for ultrasonic transmission of audio are provided. A modulator modulates an audio signal extracted by an audio data interface to a high-frequency oscillation signal generated by a carrier generator. A transmitted signal processing circuit processes a signal output by the modulator. An ultrasonic generator generates an ultrasonic signal containing audio information under the drive of the high-frequency oscillation signal. An ultrasonic receiver receives the ultrasonic signal from the ultrasonic generator. A demodulator demodulates an audio signal from the ultrasonic signal. A received signal processing circuit processes the audio signal. An audio output module plays audio. Based on the characteristics of ultrasonic, an audio signal generated by audio generation equipment is loaded to an ultrasonic signal for transmission, and a user needing to receive the audio signal demodulates the ultrasonic signal to get the audio signal. Noise pollution to the environment in the process of transmission is avoided, and other people are not disturbed. The scheme is simple, easy to implement, highly practical, and wide in range of application.

Description

technical field [0001] The invention relates to a device and method for ultrasonic transmission of audio. Background technique [0002] With the development of technology, people's leisure and entertainment activities in their spare time are becoming more and more diverse. Today's TV programs are becoming more and more colorful. Not only are there many TV channels, but also various on-demand menus. You can freely choose to watch your favorite TV series, movies, entertainment programs, talk shows, reality shows, etc. The entertainment items on the desktop computer side and portable smart device side (mobile phone, MP3, MP4, PDA, PAD, etc.) are more diverse. You can not only watch videos, listen to songs, but also play games. Excellent graphics, sophisticated characters and plot design, coupled with realistic sound effects, often make users obsessed. There are also many music enthusiasts who like to enjoy music with audio equipment to cultivate their souls. [0003] When us...

AI Technical Summary

Problems solved by technology

When listening to music with a stereo, it is necessary to turn on the speaker, otherwise the purpose of listening to music cannot be achieved.

[0004] But in many cases, the sound from the speaker will affect some people, and even become noise in their ears, which seriously affects health

For example, in the student dormitory, if some students play games with the computer speakers on, it will affect other students who are reading and make them unable to concentrate. It will also affect students who have already rested and reduce their sleep quality.

When music enthusiasts use audio equipment to listen to music, they will unconsciously increase the volume of the speakers. In some buildings with poor sound insulation, it will affect the rest, work and study of neighbors.

For some families with small babies, if the volume of the TV is low, the elderly may not be able to hear clearly, but if the volume of the TV is too high, it will affect the baby’s sleep and even affect their hearing development

Images