Sound Output Device Real-Time Frequency Correction Feedback
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Solution Overview
Problem
Conventional sound output devices, such as headphones, struggle to achieve target sound characteristics due to variations in wear-state and physical features of listeners, leading to inconsistent sound perception despite attempts to correct for these factors.
Innovation Solution
A sound output device with a first imparter to impart sound characteristics, a microphone to receive and compare sound output, a determiner to assess frequency differences, and an instruction indicator to alert and correct sound characteristics when deviations are detected, ensuring target sound characteristics are approached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional sound output devices are worn by listeners with varying physical features and wear-states, then comfort and ease of wearing are improved, but target sound characteristics cannot be achieved
Solution Approach 1:
The patent implements a feedback mechanism where a microphone captures the actual sound output, the determiner compares frequency characteristics between input and output signals to calculate difference characteristics, and the first imparter corrects sound characteristics based on this feedback. This closed-loop system continuously monitors and adjusts sound output to compensate for variations in wear-state and listener physical features, resolving the contradiction between ease of wearing and sound characteristic accuracy.
Solution Approach 2:
The patent dynamically changes sound characteristics parameters by correcting frequency characteristics based on calculated difference characteristics. The system adjusts equalization parameters and sound processing in real-time to compensate for deviations caused by different wear-states and listener anatomies, maintaining target sound characteristics despite physical variations among users.
2Manufacturing precision
If sound characteristics are corrected based on listener-specific measurements, then target sound characteristics are achieved, but device complexity increases
Solution Approach 1:
The patent employs a universal correction mechanism that can adapt to any listener without requiring custom hardware for each user. The same microphone, determiner, and imparter components serve multiple functions: capturing sound, analyzing frequency characteristics, calculating differences, and applying corrections. This multi-functional approach achieves listener-specific sound optimization using a single standardized device design, avoiding the need for complex customizations while maintaining sound characteristic accuracy.
3Manufacturing precision
If real-time sound characteristic correction is implemented, then accurate target sound perception is achieved, but processing time and computational load increase
Solution Approach 1:
The patent performs preliminary sound characteristic correction by calculating difference characteristics and applying corrections before the listener fully perceives the sound. The system continuously monitors frequency characteristics and applies real-time adjustments proactively, ensuring target sound characteristics are achieved before the listener notices any deviation. This preliminary action approach minimizes perceptible processing delays while maintaining accurate sound output.
Data Source
AI summary
A sound output device includes: a first imparter that imparts first sound characteristics to an input signal; a loudspeaker that outputs a sound based on a signal obtained by impartation of the first sound characteristics to the input signal; a first microphone that receives a sound based on the sound output by the loudspeaker; a determiner that obtains difference characteristics between frequency characteristics of the input signal and frequency characteristics of a signal derived from the sound received by the first microphone, to determine whether the difference characteristics fall within a predetermined range from target sound characteristics; and an instruction indicator that outputs an instruction for output of an alert if a result of the determination by the determiner is negative, and the first imparter corrects the first sound characteristics based on the difference characteristics if a result of the determination by the determiner is positive.