Supercharge Your Innovation With Domain-Expert AI Agents!

Array microphone vacancy detection circuit and method

A detection circuit and microphone technology, applied in the direction of electrical components, can solve the problems of low efficiency and accuracy, and achieve the effects of low cost, simple design and detection method, high detection efficiency and accuracy

Inactive Publication Date: 2021-08-31
SICHUAN CHANGHONG ELECTRIC CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of low efficiency and accuracy in the existing array microphone absence detection method, and proposes an array microphone absence detection circuit and method

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
  • Array microphone vacancy detection circuit and method
  • Array microphone vacancy detection circuit and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] The array microphone absence detection circuit described in the embodiment of the present invention is applied to an array microphone including a plurality of microphone groups, and each microphone group includes a left channel microphone and a right channel microphone, and each microphone in the array microphone is PDM (Pulse Density Modulation) based digital microphone. The array microphone absence detection circuit comprises: a control module and the same resistors as the number of microphone groups, the control module is provided with the same data input port as the number of microphone groups, and the clock port of the control module is connected to the clock port of each microphone; In the microphone group, the data output port of the left channel microphone is respectively connected to the data output port of the right channel microphone and the corresponding data input port of the control module, and the data output port of the left channel microphone is also gro...

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

PropertyMeasurementUnit
Resistanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of audio, discloses an array microphone vacancy detection circuit and method, and aims to solve the problem that the existing array microphone vacancy detection method is low in efficiency and accuracy, and the circuit comprises a control module and resistors with the same number as microphone groups, the control module is provided with data input ports of which the number is the same as that of the microphone groups, and a clock port of the control module is connected with a clock port of each microphone; in each microphone group, a data output port of the left channel microphone is respectively connected with a data output port of the right channel microphone and a corresponding data input port of the control module, and the data output port of the left channel microphone is also grounded through a corresponding resistor; the control module is used for providing clock signals for the microphones after the array microphone is powered on and judging whether the array microphone is vacant or not according to the input audio data. According to the invention, the efficiency and accuracy of array microphone vacancy detection are improved, and the method is suitable for digital microphones.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to an array microphone absence detection circuit and method. Background technique [0002] The far-field voice function integrated with AI (artificial intelligence) voice engine search is a technology that changes the user experience. The user can control the device at a distance of 3 to 5 meters from the device. Such scenarios are now very common in smart homes. Behind it is the technical support of the array microphone. [0003] Array microphones record simultaneously through multiple microphones, complement each other, and alternately compare, which can well solve the problems of low long-distance signal-to-noise ratio, environmental refraction, multi-source interference, and equipment self-noise. Therefore, consistency is the most fundamental requirement for implementing the entire far-field workflow. All microphones must be online at the same time and have the same sensitive r...

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
IPC IPC(8): H04R29/00
CPCH04R29/005
Inventor 雷伟
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com