Adaptive Microphone Speaker Management for Audio Processing
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Solution Overview
Problem
Existing methods for managing audio input and output components in electronic devices, such as microphones and speakers, are inefficient and costly, particularly in optimizing noise reduction and acoustic echo canceling performance without affecting the device's primary functions or requiring modifications to the microphone and speaker placement.
Innovation Solution
The system adaptively manages and switches the operation of multiple microphones and speakers by utilizing built-in speakers as microphone inputs and vibration detectors, automatically selecting them based on the device's mode of operation to enhance noise reduction and acoustic echo canceling performance without altering their placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If speakers are used as microphones to improve noise reduction and echo canceling, then audio processing performance is improved, but device complexity increases due to adaptive switching requirements
Solution Approach 1:
The patent makes speakers capable of serving dual functions: as audio output devices and as audio input devices (microphones). The speaker components are configured to operate in different modes depending on system needs, allowing the same hardware to perform multiple functions and reducing the need for separate dedicated components
Solution Approach 2:
The system dynamically switches between different operational modes for the speakers and microphones based on real-time conditions. The adaptive switching mechanism adjusts which components are active and in what mode (speaker-only, microphone-only, or full duplex) to optimize performance while managing complexity
2Quantity of substance
If speakers are utilized as microphone inputs, then hardware cost is reduced, but signal processing complexity increases
Solution Approach 1:
The patent enables existing speaker components to serve dual purposes as both audio output and audio input devices. By making the speakers universally functional, the system reduces hardware requirements and costs while leveraging the existing component infrastructure
Solution Approach 2:
The patent replaces dedicated mechanical microphone components with speaker components that can function as microphones. This substitution uses the existing speaker hardware to perform the sensing function traditionally requiring separate microphone elements, thereby reducing hardware quantity
3Reliability
If adaptive switching between microphones and speakers is implemented, then audio enhancement is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically manages its own operational configuration by autonomously switching between different component modes based on detected conditions. The adaptive switching occurs without user intervention, with the system self-regulating which components function as speakers or microphones to optimize acoustic performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach improves noise reduction and acoustic echo canceling performance by effectively utilizing speakers as microphones, providing reliable user input detection and minimizing additional hardware costs, while maintaining the device's primary functionality.
Implementation Method 1
A speaker may be configured and used as a microphone and/or a vibration detector, such as to provide reliable determination of whether a device user is talking or not
Data Source
AI summary
Methods and systems are provided for adaptively managing a plurality of microphones and speakers in an electronic device. A mode of operation of the electronic device may be determined, and operation of at least one speaker may be managed, based on the determined mode of operation. The managing may comprise adaptively switching or modifying functions of the at least one speaker. For example, the at least one speaker may be configured to act as microphone or as vibration detector. Input obtained using the at least one speaker may be utilized in optimizing audio related functions, such as noise reduction and/or acoustic echo canceling.