Remote Control Microphone Audio Calibration
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Solution Overview
Problem
Audio system setup for room correction measurements often requires inconvenient microphone setup and calibration, which can be time-consuming and cumbersome for end users.
Innovation Solution
The use of a remote control with a built-in microphone allows for the retrieval of microphone characteristics, such as frequency response, sensitivity, and phase response, to calibrate an audio system wirelessly, eliminating the need for separate microphone setup and enabling automatic calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate microphone is used for room correction measurements, then measurement accuracy is improved, but setup complexity and user inconvenience increase
Solution Approach 1:
The remote control device is designed to perform multiple functions: it serves as both a user interface controller for the audio system and as a measurement microphone for room correction. The remote control includes a microphone capable of performing room acoustics measurements, eliminating the need for a separate dedicated measurement microphone.
Solution Approach 2:
The patent combines the remote control device with a measurement-capable microphone into a single integrated unit. This merging of the control device and measurement tool simplifies the overall system setup, as users only need to position one device (the remote control) rather than setting up both a separate microphone and control device.
2Measurement precision
If manual microphone setup and calibration is performed, then measurement accuracy is improved, but calibration time and user burden increase
Solution Approach 1:
The system performs preliminary characterization of the remote control's microphone characteristics (frequency response, sensitivity, phase response) during manufacturing or initial setup. These pre-determined characteristics are stored and automatically applied during room correction, eliminating the need for users to perform time-consuming manual calibration procedures while maintaining measurement accuracy.
Solution Approach 2:
The audio system automatically retrieves the remote control's microphone characteristics using the device's identification information and performs the calibration process autonomously without requiring manual user intervention. The system self-adjusts based on the pre-determined microphone characteristics, reducing both calibration time and user burden.
3Productivity
If remote control microphone characteristics are retrieved using identification information, then calibration efficiency is improved, but requirement for characteristic database increases system complexity
Solution Approach 1:
Instead of requiring complex real-time analysis of each remote control's microphone, the system uses pre-determined characteristic data that is copied from a database based on the remote control's identification information. This approach efficiently retrieves appropriate calibration parameters without requiring complex real-time measurement and analysis infrastructure.
Data Source
AI summary
A remote commander (RC) for a TV or other entertainment system component has a microphone. A device can query the RC for its serial number, access the Internet with the serial number to look up characteristics of the microphone, and then knowing the characteristics, use the RC microphone to detect sound such as speaker test chirps to calibrate an audio system in a convenient and user-friendly manner while achieving the accuracy of calibration that can only be obtained by using a calibrated microphone system.