Unlock instant, AI-driven research and patent intelligence for your innovation.

Feedforward microphone function detection method, device, terminal equipment and storage medium

A microphone and feedforward technology, which is applied in the field of feedforward microphone function detection and computer readable storage media, can solve the problems that the FFMIC function detection of active noise reduction earphones cannot be realized, etc.

Active Publication Date: 2021-07-20
SHENZHEN HORN AUDIO
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present application provides a feedforward microphone function detection method, device, terminal equipment, and computer-readable storage medium for active noise-cancelling headphones, so as to solve the problem that existing detection methods cannot realize the FF of finished active noise-cancelling headphones. Problems with MIC function detection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Feedforward microphone function detection method, device, terminal equipment and storage medium
  • Feedforward microphone function detection method, device, terminal equipment and storage medium
  • Feedforward microphone function detection method, device, terminal equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] See figure 2 , which is a schematic flow diagram of a method for detecting a feedforward microphone function of an active noise reduction headset provided in an embodiment of the present application, and the method may include the following steps:

[0074] Step S201: Simultaneously collect the first sound signal from the first sound source through the left and right artificial ears, and generate a first frequency response curve and a second frequency response curve corresponding to the left and right artificial ears according to the first sound signal.

[0075] Specifically, first put the left and right speakers of the finished earphone to be tested into the artificial ear, then turn on the earphone and enable the normal signal path; control the first sound source to emit a corresponding noise signal, and the noise signal passes through the sound source → FF MIC → earphone speaker → simulation The signal channel of the ear is transmitted to the left and right artificia...

Embodiment 2

[0098] After determining that the feedforward microphone of the finished earphone to be tested is a defective product, further, it may be determined which side of the FF MIC is defective based on the difference frequency response curve.

[0099] Based on the first embodiment above, see image 3 The flow schematic block diagram of the shown FF MIC function detection can also include the following steps after the above-mentioned determination that the feedforward microphone of the finished earphone to be detected is a defective product:

[0100] Step S301 , calculating a first average value of decibel values ​​corresponding to a second preset frequency band of the first difference frequency response curve.

[0101] Step S302, calculating a second average value of the decibel values ​​corresponding to the second preset frequency band of the second difference frequency response curve.

[0102] It should be noted that the above-mentioned second preset frequency band may be equal t...

Embodiment 3

[0113] In order to better introduce the technical solutions provided by the embodiments of the present application, this embodiment will be described in conjunction with specific examples.

[0114] In this embodiment, both the left sound source and the right sound source emit pink noise of 80 dBSPL, and both the first preset frequency band and the second preset frequency band are 50 Hz-300 Hz. Subtract the frequency response curve for the right ear from the frequency response curve for the left ear.

[0115] See Figure 4 , is another schematic block diagram of the process of the method for detecting the FF MIC function of the active noise reduction earphone provided in the embodiment of the present application. The method may include the steps of:

[0116] Step S401 , controlling the left audio source to emit pink noise of 80 dBSPL alone.

[0117] Step S402 , collect sound signals simultaneously through the left and right artificial ears, and generate a frequency response ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the present application discloses a feed-forward microphone function detection method, device, terminal equipment and storage medium of an active noise reduction earphone. The first frequency response curve and the second frequency response curve of the first frequency response curve; whether the decibel value corresponding to the first preset frequency band of the first difference frequency response curve between the first frequency response curve and the second frequency response curve falls within the first If it falls within the numerical range, collect the second sound signal from the second sound source at the same time through the left and right artificial ears, and generate the corresponding third and fourth frequency response curves respectively; judge the third and fourth frequency response curves Whether the decibel value corresponding to the first preset frequency band of the second difference frequency response curve between the curves falls within the first numerical range; if it falls, it is determined that the feedforward microphone of the finished earphone to be tested is a good product. The embodiment of the present application can realize the function detection of the FF MIC of the finished active noise reduction earphone.

Description

technical field [0001] The present application belongs to the technical field of earphones, and in particular relates to a method for detecting a feedforward microphone function of an active noise reduction earphone, a device, a terminal device, and a computer-readable storage medium. Background technique [0002] Noise-cancelling headphones refer to a kind of headphones that use some method to reduce noise, mainly including active noise-cancelling headphones and passive noise-cancelling headphones. [0003] Active noise canceling headphones can generate reverse sound waves equal to the external noise through the noise reduction system, neutralize the noise, and achieve the effect of noise reduction. The active noise reduction method can be divided into feedforward active noise reduction and feedback active noise reduction. Generally, a feed forward microphone (Feed Forward Microphone, FF MIC) is installed in an active noise reduction earphone, and in order to ensure the no...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04R29/00
CPCH04R29/004
Inventor 冷明星温志锋王丽
Owner SHENZHEN HORN AUDIO