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Audio analysis instrument automatic metrological verification system and recognition algorithm

A technology of audio analysis and metrology verification, which is applied in speech analysis, instruments, etc., and can solve problems such as heavy workload

Pending Publication Date: 2019-06-25
ZHEJIANG UNIV CITY COLLEGE
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Problems solved by technology

[0002] Audio analysis instruments include audio analysis and volume measurement instruments. Many of these instruments are used in the fields of environmental protection and belong to national metrology verification equipment. According to national verification standards, for audio analysis, such as 1 / 3oct analysis of sound level, national standards require To test the bandwidth performance of the multi-point center frequency of the analytical instrument, it is necessary to manually set the amplitude and frequency of the measurement signal, and at the same time manually compare the tested indicators, and the workload is very large
For the analysis and verification of volume, it is necessary to test the linearity and decibel value of various sound frequency weighting and time weighting for manual verification and index comparison, and the workload is also very large

Method used

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  • Audio analysis instrument automatic metrological verification system and recognition algorithm
  • Audio analysis instrument automatic metrological verification system and recognition algorithm
  • Audio analysis instrument automatic metrological verification system and recognition algorithm

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Embodiment Construction

[0084] The present invention will be further described below in conjunction with the examples. The description of the following examples is provided only to aid the understanding of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, some improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0085] The system consists of three parts, including a quasi-sound source generation system, a measurement result identification system, and a computer program control system. Its system design principle block diagram is as follows: Figure 4 shown.

[0086] Audio analysis instrument automatic measurement and verification system, including standard sound source generation system, measurement result identification system, and computer program cont...

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Abstract

The invention relates to an audio analysis instrument automatic metrological verification system which comprises a standard sound source generating system, a measurement result recognition system anda computer program control system. The standard sound source generating system comprises a ZigBee transceiving unit, an ARM system, a program control signal source, a power amplifier circuit, a soundmaking device and a detecting circuit. The measurement result recognition system comprises a measured instrument display screen, a camera, an image electric signal interface unit, an ARM system, a detecting circuit, an AC interface, a DC interface and a ZigBee transceiving unit. The computer program control system comprises a ZigBee transceiving unit, an ARM system and an upper computer. The audioanalysis instrument automatic metrological verification system has the advantages that by means of the audio analysis instrument automatic metrological verification system with the combination of thestandard sound source generating system, the measurement result recognition system and the computer program control system, the audio analysis instrument verification automation is realized, and thelabor output and time cost in the verification process are greatly saved.

Description

technical field [0001] The invention relates to an automatic measurement verification system, in particular to an automatic measurement verification system for an audio analysis instrument. Background technique [0002] Audio analysis instruments include audio analysis and volume measurement instruments. Many of these instruments are used in the fields of environmental protection and belong to national metrology verification equipment. According to national verification standards, for audio analysis, such as 1 / 3oct analysis of sound level, national standards require To test the bandwidth performance of the multi-point center frequency of the analytical instrument, it is necessary to manually continuously set the amplitude and frequency of the measurement signal, and at the same time manually compare the tested indicators, and the workload is very heavy. For the analysis and verification of volume, it is necessary to test the linearity and decibel value of various sound frequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/03G10L25/27
Inventor 金晖何洁
Owner ZHEJIANG UNIV CITY COLLEGE
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