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Loudspeaker system and detection method for the same

A detection method and loudspeaker technology, applied in the field of loudspeaker systems, can solve problems such as too small, unfavorable long-term use of loudspeakers, and damage to loudspeakers

Inactive Publication Date: 2014-04-09
SHENZHEN FUTAIHONG PRECISION IND CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the speaker of the electronic device is playing an audio file, the speaker may be in an overloaded state due to factors such as the large capacity of the played audio file or the long playing time, which may easily cause damage to the speaker
In order to solve the above problems, the output power of the speaker is generally controlled by limiting the rated power output from the audio amplifier to the speaker. The output power of the speaker is limited within the rated power range, but it is easy to cause the output power to be too large or too small, which is not conducive to the long-term use of the speaker

Method used

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  • Loudspeaker system and detection method for the same
  • Loudspeaker system and detection method for the same

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Embodiment Construction

[0013] see figure 1 , the speaker system 100 provided by the preferred embodiment of the present invention can be used in various electronic devices (not shown) equipped with speakers, such as mobile phones, notebook computers and personal digital assistants (Personal Digital Assistant, PDA), etc. , to detect the real-time output power of the speaker 20 of the electronic device.

[0014] The speaker system 100 includes an audio amplifier 10 , a speaker 20 , a detection resistor 30 , a filter 40 and a control processing unit 50 . The audio amplifier 10 is electrically connected to the speaker 20 for providing an operating voltage for the speaker 20 . The audio amplifier 10 provides an output voltage Vo to the speaker 20 .

[0015] The speaker 20 is used to play audio files. When the speaker 20 works, it works with a predetermined output power according to the output voltage Vo of the audio amplifier 10 . The loudspeaker 20 has a rated power. When the output power of the loud...

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Abstract

This invention provides a loudspeaker system which is applied in an electronic device. The loudspeaker system comprises an audio frequency amplifier, a loudspeaker, a detection resistor and a control-processing unit. The audio frequency amplifier, the loudspeaker and the detection resistor form a current loop. The audio frequency amplifier outputs voltage to the loudspeaker; the control-processing unit is electrically connected to the detection resistor and the audio frequency amplifier for detecting the voltage value of the detection resistor on real time, calculating current going through the loudspeaker and real-time output power according to the detected real time voltage value and the resistance value of the detection resistor, and comparing the real-time output power of the loudspeaker with the rated power of the loudspeaker. When the real-time output power is higher than the rated power, the control-processing unit controls the audio frequency amplifier to reduce the output voltage. The invention also provides a method for detecting the loudspeaker system.

Description

technical field [0001] The invention relates to a loudspeaker system of an electronic device, in particular to a loudspeaker system with power detection and adjustment functions and a detection method thereof. Background technique [0002] When the speaker of the electronic device plays an audio file, the speaker may be in an overloaded state due to factors such as the large capacity of the played audio file or the long playing time, which may easily cause damage to the speaker. In order to solve the above problems, the output power of the speaker is generally controlled by limiting the rated power output from the audio amplifier to the speaker. The output power of the speaker is limited within the rated power range, but it is easy to cause the output power to be too large or too small, which is not conducive to the long-term use of the speaker. Contents of the invention [0003] In view of this, it is necessary to provide a speaker system that can detect and adjust speak...

Claims

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Application Information

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IPC IPC(8): H04R3/00
Inventor 刘正彬
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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