Sound Device Controller Dynamic Vent Flap Displacement
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Solution Overview
Problem
Existing sound producing devices, such as wearable earbuds, face challenges in reducing the occlusion effect while maintaining effective sound production, as they rely on either direct current (DC) voltages for vent formation or alternating current (AC) voltages for sound production, lacking a solution that integrates both effectively.
Innovation Solution
A controller that outputs both DC and AC driving voltages to actuate a flap pair in a sound producing device, forming a vent by generating displacements and producing sound through an audio amplifier, allowing for dynamic control of vent states and sound production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If DC voltages are used to drive the flap pair to form a vent, then the occlusion effect is reduced, but sound production capability is compromised
Solution Approach 1:
The patent combines DC voltage driving for vent formation with AC voltage driving for sound production into a single integrated driving system. The controller outputs both DC and AC voltage components to the sound producing device, allowing the flap pair to simultaneously perform vent formation (via DC-induced displacement) and sound production (via AC-induced vibration), thereby resolving the contradiction between reducing occlusion effect and maintaining sound production capability
Solution Approach 2:
The patent implements dynamic control of the flap pair by applying time-varying voltages that include both DC and AC components. The DC component dynamically adjusts the baseline position of the flaps to form vents, while the AC component dynamically drives the flaps to vibrate for sound production. This dynamic dual-component voltage approach allows the system to adaptively balance vent formation and sound production throughout the audio signal cycle
2Object-generated harmful factors
If AC voltages are used to drive the sound producing device to produce sound, then sound production is effective, but vent formation capability is lost
Solution Approach 1:
The patent merges AC voltage driving for sound production with DC voltage driving for vent formation into a unified dual-component voltage signal. The controller superimposes the DC voltage component onto the AC voltage component, enabling the sound producing device to simultaneously achieve effective sound production (through AC-driven membrane vibration) and vent formation (through DC-induced flap displacement), thus resolving the contradiction between sound production effectiveness and occlusion effect reduction
3Measurement precision
If separate controllers are used for vent formation and sound production, then control precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal controller that performs both vent formation control and sound production control through a single integrated device. The controller generates composite voltage signals containing both DC and AC components, allowing one controller to simultaneously manage the flap pair's vent formation function and the sound producing device's audio output function. This multi-functional approach maintains control precision while avoiding the complexity of separate dedicated controllers
Solution Approach 2:
The patent combines the functions of vent controller and audio amplifier into a single integrated controller unit. By merging these two control functions into one device that outputs composite voltage signals, the system achieves precise simultaneous control of vent formation and sound production without requiring multiple separate controllers, thereby resolving the contradiction between control precision and device complexity
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
The controller effectively integrates vent formation and sound production by using DC voltages to control flap displacements and AC voltages to drive the membrane, enhancing sound quality and reducing occlusion by dynamically managing vent states.
Implementation Method 1
The vent controller outputs the first driving voltage and actuates the first flap to generate a first displacement, the vent controller outputs the second driving voltage and actuates the second flap to generate a second displacement
Implementation Method 2
The audio amplifier is configured to output a first audio signal to the sound producing device, to produce a sound
Data Source
AI summary
A controller for controlling a sound producing device includes a vent controller and an audio amplifier. The vent controller is configured to output a first driving voltage and a second driving voltage to the sound producing device, to control the sound producing device to form a vent. The audio amplifier is configured to output a first audio signal to the sound producing device, to produce a sound. The sound producing device comprises a flap pair, and the flap pair comprises a first flap and a second flap. The vent controller outputs the first driving voltage and actuates the first flap to generate a first displacement, the vent controller outputs the second driving voltage and actuates the second flap to generate a second displacement, and the vent is formed because of a difference between the first displacement and the second displacement.