Directive speaker device and usage method thereof

A loudspeaker and directivity technology, applied in the direction of frequency/direction characteristic devices, etc., can solve the problems of sound wave propagation in all directions, easy leakage in calls, etc., and achieve the effect of good concealment and good propagation direction positioning

Inactive Publication Date: 2013-08-07
AAC ACOUSTIC TECH (SHENZHEN) CO LTD +1
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional loudspeakers have been widely used in communication terminal equipment such as mobile phones and landline phones to realize audio playback. Therefore, communication terminals using such traditional loudspeakers must be placed close to the ears to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Directive speaker device and usage method thereof
  • Directive speaker device and usage method thereof
  • Directive speaker device and usage method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] See figure 1 As shown, the present invention provides a directional speaker device, which includes an audio output module for outputting audio signals, a carrier generator for generating a carrier signal, and a carrier generator for controlling the carrier signal or not to generate a carrier signal. Signal mode selection module, modulator for modulating audio signal and carrier signal to obtain modulated signal, amplifier for receiving modulated signal output by modulator and amplifying the modulated signal, and amplifier output for receiving and playing Signal speakers,

[0020] Wherein, the audio output module further includes a preamplifier, and the preamplifier is used to adjust the size of the voice signal. The carrier signal generated by the carrier generator is an ultrasonic carrier signal. The frequency of the carrier signal is equal to the resonant frequen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Resonant frequencyaaaaaaaaaa
Login to view more

Abstract

The invention relates to a directive speaker device and a usage method thereof. The device comprises an audio output module used for outputting audio signals, a carrier generator used for producing carrier signals, a mode selecting module used for controlling whether or not the carrier generator produces the carrier signals, a modulator used for modulating the audio signals and the carrier signals to obtain modulating signals, an amplifier used for receiving modulating signals outputted by the modulator and amplifying the modulating signals, and a speaker used for receiving and playing amplifier output signals. By the aid of the directive speaker device and the usage method thereof, sound from the speaker has fine secrecy and spreading direction positioning.

Description

【Technical field】 [0001] The invention relates to the field of communication with directional functions, in particular to a directional loudspeaker device and a use method thereof. 【Background technique】 [0002] With the rapid development of wireless communication, there are more and more mobile phones in the world. People's requirements for mobile phones are not limited to basic calls, but also require more requirements for the appearance and shape of traditional mobile phones. Especially with the advent of the 3G era, mobile multimedia technology has also developed. Many mobile phones have a variety of entertainment functions, such as video playback, digital camera, games, GPS navigation and so on. [0003] Traditional loudspeakers have been widely used in communication terminal equipment such as mobile phones and landline phones to realize audio playback. Therefore, communication terminals using such traditional loudspeakers must be placed close to the ears to generate s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04R1/20
Inventor 张丽宏惠耀李刚王洪兴冯声振
Owner AAC ACOUSTIC TECH (SHENZHEN) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap