Microphone Motion Validation for Playback Audio Calibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing media playback systems face challenges in calibrating playback devices to optimize sound quality in varying environments, as acoustics can significantly affect sound transmission and frequency response.
Innovation Solution
The system employs a recording device with a microphone to detect and analyze sound waves emitted by playback devices during calibration. By moving the recording device through the listening environment, the system generates data that helps determine how the environment affects sound and adjusts the playback device's frequency response accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the recording device is moved through the listening environment during calibration, then the measurement precision of environmental acoustics is improved, but the time required for calibration increases
Solution Approach 1:
The system performs motion validation checks during the calibration process to ensure the recording device has moved sufficiently through the environment before completing calibration. This preliminary validation prevents premature completion while maintaining efficiency by detecting motion patterns in real-time rather than requiring fixed calibration duration.
Solution Approach 2:
The system continuously monitors motion data from sensors during calibration and uses this feedback to determine when sufficient environmental coverage has been achieved. The calibration process dynamically adjusts based on detected motion, completing only when validation criteria are met, thus optimizing both precision and time efficiency.
2Reliability
If motion validation is performed during calibration, then the reliability of calibration results is improved, but the device complexity increases
Solution Approach 1:
The system uses motion sensors as intermediary components to validate calibration conditions without requiring complex acoustic analysis during the validation process itself. The sensors provide objective motion data that simplifies the validation logic while ensuring reliable calibration results through physical movement verification.
Solution Approach 2:
The patent replaces complex acoustic measurement validation with simpler mechanical motion sensing. Instead of analyzing acoustic patterns to verify calibration completeness, the system uses motion sensors to detect physical movement of the recording device, substituting a mechanically simpler validation method that maintains reliability.
3Measurement precision
If the system detects insufficient motion in vertical or horizontal directions, then the measurement precision is maintained, but the productivity of calibration process decreases
Solution Approach 1:
The system requires motion validation in specific dimensions (vertical or horizontal) rather than demanding complete three-dimensional coverage. This partial action approach maintains measurement precision by ensuring sufficient motion in critical directions while allowing the calibration to complete without requiring excessive motion in all directions, thus improving productivity.
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 allows for effective calibration of playback devices, improving sound quality by compensating for environmental acoustics, and identifying and addressing potential error conditions during the calibration process.
Implementation Method 1
a microphone to detect and record an audio signal including a calibration sound emitted by the one or more playback devices
Data Source
AI summary
Examples described herein involve validating motion of a microphone during calibration of a playback device. An example implementation involves a mobile device detecting, via one or more microphones, audio signals emitted from one or more playback devices as part of a calibration process. After the one or more playback devices emit the audio signals, the mobile device determines whether the detected audio signals indicate that sufficient horizontal translation of the mobile device occurred during the calibration process. When the detected audio signals indicate that insufficient horizontal translation occurred, the mobile device displays a prompt to move the mobile device more while the one or more playback devices emit one or more additional audio signals as part of the calibration process. When the detected audio signals indicate that sufficient horizontal translation occurred, the mobile device calibrates the one or more playback devices with a calibration based on the detected audio signals.