Speaker Gain Control for Consistent Audio Output
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Solution Overview
Problem
In speaker arrays of electronic devices, placement variations cause differing link impedances and voltage values across speakers, leading to fluctuating sound signals and a degraded user experience due to inconsistent audio output.
Innovation Solution
A control method that determines whether power supply signal parameters from multiple speakers satisfy a target condition, adjusting their gains to a uniform level to ensure consistent audio output across all speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If speakers are placed at different positions on the motherboard, then the device can achieve compact layout and integration, but the link impedance and voltage values differ across speakers causing inconsistent audio output
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the gain parameter of each speaker based on its detected voltage value. The control unit modifies the first gain of each speaker to a second gain according to the voltage detection results, thereby compensating for the impedance differences caused by varying speaker positions and achieving consistent audio output across all speakers.
2Adaptability or versatility
If link impedance varies across speakers due to placement, then individual speaker connections are flexible, but voltage detection values differ leading to fluctuating sound signals
Solution Approach 1:
The patent implements feedback by having each speaker detect its own voltage value through its power supply signal and report this information to the control unit. The control unit then uses this feedback information to adjust the gain of each speaker accordingly, creating a closed-loop control system that ensures stable and consistent audio output despite variations in link impedance.
3Weight of moving object
If each speaker operates with independent power supply signal, then speaker independence is maintained, but gain variations cause inconsistent audio output levels
Solution Approach 1:
The patent applies local quality by allowing each speaker to operate independently with its own power supply signal and voltage detection, while the control unit applies localized gain adjustment to each speaker based on its specific voltage value. This ensures that each speaker maintains its operational independence while achieving uniform audio output through individualized gain compensation.
Data Source
AI summary
A control method includes: determining whether first parameters reported by a plurality of speakers satisfy a target condition, the plurality of speakers being disposed at different positions in an electronic device, and each first parameter describing a power supply signal of each speaker; and controlling the plurality of speakers to change their first gain to a same second gain.