Noise total sound pressure level measurement method, noise total sound pressure level measurement system and computer readable storage medium
A measurement method and sound pressure level technology, applied in the field of acoustics, can solve problems such as large amount of calculation and slow measurement speed, and achieve the effect of simple calculation and fast measurement speed
Inactive Publication Date: 2019-07-19
AAC TECH PTE LTD
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However, the inventors of the present invention have found that the method of octave band accumulation needs to filter the noise signal before each accumulation, resulting in a large amount of calculation and a slow measurement speed
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[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present invention, many technical details are proposed in order to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in the present invention can also be realized.
[0022] The first embodiment of the present invention relates to a method for measuring the total sound pressure level of noise, the specific process is as follows figure 1 shown, including the following steps:
[0023] Step S101: Acquire a time-domain digital signal of a noise sound pressur...
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The invention relates to the field of acoustics, and discloses a noise total sound pressure level measurement method, a noise total sound pressure level measurement system and a computer readable storage medium. The noise total sound pressure level measurement method comprises the following steps: acquiring a time domain digital signal of a sound pressure signal of noise; according to the time domain digital signal of the sound pressure signal, acquiring a frequency domain signal of the sound pressure signal; according to the frequency domain signal and the Parseval's theorem, acquiring a sound pressure effective value of the sound pressure signal; and converting the sound pressure effective value into total sound pressure level of the noise. The noise total sound pressure level measurement method provided by the embodiment of the invention has the advantage of relatively higher measurement speed.
Description
technical field [0001] The embodiments of the present invention relate to the field of acoustics, and in particular to a method, system and computer-readable storage medium for measuring the total sound pressure level of noise. Background technique [0002] At present, with the development of electronic technology, mobile communication terminal devices such as mobile phones need to rely on the vibration of the fuselage to remind the user of the silent notification of incoming calls, and the components that generate vibration are built-in miniature linear vibration motors. The core component of the health care equipment is also a built-in miniature linear vibration motor. The motor will produce noise during operation, and the noise can also reflect the operation of the motor to a certain extent. [0003] As an important characteristic data of noise, the total sound pressure level is usually measured by an octave band accumulation method in the prior art. However, the invent...
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IPC IPC(8): G01H11/06
CPCG01H11/06H04R29/008H04R29/00G01R31/2825G06F17/14H04R29/004
Inventor 秦英明向征谢兵
Owner AAC TECH PTE LTD