Hall objective audio quality parameter measuring system and method
A measurement system and sound quality technology, applied in speech analysis, instruments, etc., can solve the problems of unstable measurement results and low efficiency, and achieve the effects of high speed, good repeatability and high precision
Inactive Publication Date: 2013-04-17
SHANGHAI YINGBO ACOUSTICS ENG TECH
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[0003] In order to solve the problem of unstable measurement results and low efficiency caused by the use of natural sound impulse response in the existing sound quality parameter measurement, the present invention adopts the following technical solutions:
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[0034] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0035] see figure 1 , which is a schematic diagram of an embodiment of a hall objective sound quality parameter measurement system of the present invention.
[0036] The present invention provides an objective sound quality parameter measurement system in a hall, which includes: a signal transmission module 11, a signal acquisition module 12, a signal processing module 13, a storage and report generation module 14, a real-time measurement module 15, an offline analysis module 16, and a display module 17. Among them, the signal acquisition module 12, the signal processing module 13, and the storage and report generation module 14 are connected in sequence. The real-time measurement module 15 , the offline analysis module 16 , and the display module 17 are respectively connected with the signal processing module 13 .
[0037] The signal tr...
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The invention discloses a hall objective audio quality parameter measuring system which comprises a signal transmission module, a signal acquisition module and a signal processing module; the signal transmission module is used for transmitting an audio frequency sweeping signal to a hall through a digital-to-analog conversion card, power amplification equipment and a sound box; the signal acquisition module is used for acquiring sound pressure signals of measuring points in the hall through the collaborative work of the digital-to-analog conversion card, a preposed amplification circuit and a microphone; and the signal processing module is used for receiving the sound pressure signals of the measuring points and calculating the objective sound quality parameter according to the sound pressure signals of the measuring points. The invention further discloses a hall objective sound quality parameter measuring method. A measuring process is automatic, the data acquisition, processing and analysis are integrated, the speed is high, the precision is high and the repeatability is good.
Description
technical field [0001] The invention relates to the technical field of architectural acoustics measurement, in particular to a system and method for measuring objective sound quality parameters of halls. Background technique [0002] The function of the hall objective sound quality parameter is to describe the hall sound quality. The measurement of the objective sound quality parameters of the halls is an important basis for the sound quality acceptance of various halls such as concert halls, theaters, conference halls, gymnasiums, etc. All the objective sound quality parameters can be obtained from the indoor impulse response, so the accurate measurement of the impulse response is the key technology to measure the objective sound quality parameters. At present, the impulse responses applied by the domestic sound quality parameter measurement equipment are basically natural sound impulse responses, such as electric sparks, firecrackers, etc., which have the shortcomings of ...
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IPC IPC(8): G10L25/60
Inventor 刘海生杨春庄李文婷陈婧田超峰
Owner SHANGHAI YINGBO ACOUSTICS ENG TECH