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Audio power amplifier testing system and method

A test system and audio technology, applied in the direction of electrical components, can solve problems such as high cost and troublesome testing, and achieve the effect of reducing test cost, high test accuracy, and reduced test process

Active Publication Date: 2015-04-01
NINGBO ZHONGRONG ACOUSTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art relies on audio power amplifier testing equipment composed of expensive electronic equipment such as electronic signal generators, multimeters, oscilloscopes, and spectrum analyzers to test audio power amplifiers. Not only is the cost high, but the test is more troublesome.

Method used

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  • Audio power amplifier testing system and method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following specific embodiments.

[0027] As shown in the figure: an audio power amplifier test system, which includes an audio power amplifier to be tested, a signal generator module, a sound card module, a split source channel module, a first signal acquisition module, a load module, a second signal acquisition module and a test selection control module, the signal generator module, the sound card module, the split source channel module, the audio power amplifier to be tested and the load module are electrically connected in sequence, the sound card module and the audio power amplifier to be tested are also electrically connected through the first signal acquisition module, and the second The second acquisition module is electrically connected with the sound card module, and the second acquisition m...

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Abstract

The invention relates to the technical field of loudspeaker boxes, and in particular to an audio power amplifier testing system and an audio power amplifier testing method. The system comprises an audio power amplifier to be tested, a signal generator module, an audio card module, a separate source channel module, a first signal collection module, a load module, a second signal collection module and a test selection controlling module, wherein the signal generator module, the audio card module, the separate source channel module, the audio power amplifier to be tested and the load module are electrically connected in sequence; the audio card module and the audio power amplifier to be tested are also electrically connected by the first signal collection module; the second collection module is electrically connected with the audio card module; the second collection module, the signal generator module, the separate source channel module and the first signal collection module are respectively electrically connected with the test selection controlling module; the testing system and method are relatively low in testing cost and the test is relatively convenient.

Description

technical field [0001] The invention relates to the technical field of sound boxes, in particular to an audio power amplifier testing system and method. Background technique [0002] Audio power amplifier, as an essential device in the audio playback system, is directly used to drive the speaker of the terminal equipment in the audio system. Generally, the signal level of the audio signal source is relatively small, and it cannot directly drive the loudspeaker with higher power. The audio power amplifier must be used to amplify the power of the audio signal first, so the performance of the power amplifier plays a vital role in the perfect playback of the sound. , and for the commonly used audio analog power amplifiers at present, since discrete components are used to realize the step-by-step release of signals, each stage of the circuit will introduce noise and be amplified together with the music signal. In addition, almost all power amplifier tubes use negative feedback ci...

Claims

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Application Information

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IPC IPC(8): H04R29/00
Inventor 闫峻闫秉耀张涛
Owner NINGBO ZHONGRONG ACOUSTICS TECH
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