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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
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  • 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 generate sound waves during communication. Transmission, in the hands-free mode, you can only talk through the speaker, and it is easy to cause sound waves to spread in all directions during the call, which further causes the content of the call to be easily leaked

Method used

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  • Directive speaker device and usage method thereof
  • Directive speaker device and usage method thereof
  • Directive speaker device and usage method thereof

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] See figure 1 As shown, the present invention provides a directional loudspeaker device, the device includes an audio output module for outputting audio signals, a carrier generator for generating a carrier signal, and is used to control the carrier generator to generate a carrier signal or not generate a carrier The mode selection module of the signal, the modulator used to modulate the audio signal and the carrier signal to obtain the modulated signal, the amplifier used to receive the modulated signal output by the modulator and amplify the modulated signal, and the amplifier used to receive and play the output signal to the speaker,

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

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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

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Application Information

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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
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