Movable Receiver Positioning for Audio Noise Reduction
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Solution Overview
Problem
Mobile phone designs with micro slits or narrow slits for sound receivers often result in noise, poor sound quality, or low volume due to gaps between the receiver and other components, affecting audio signal transmission.
Innovation Solution
A receiver control method that moves the receiver from a first position where its sound hole overlaps with a target component to a second position where it does not, using a microphone to detect noise and an electrical machinery system to adjust the receiver's position, thereby minimizing the impact of gaps on audio signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the receiver uses a micro slit or narrow slit design, then the aesthetic appearance is improved, but the sound quality and volume deteriorate due to gaps between the receiver and target component
Solution Approach 1:
The receiver is designed to be movable between a first position (retracted) and a second position (extended). When in the second position, the receiver protrudes from the terminal body, changing the spatial relationship between the sound hole and target component. This dynamic position adjustment allows the system to maintain both aesthetic appearance (when retracted) and audio quality (when extended), resolving the contradiction between shape and reliability.
2Shape
If the receiver is positioned at the first position with overlapping projection, then the aesthetic appearance is improved, but noise increases due to gap interference
Solution Approach 1:
The receiver can dynamically switch between first and second positions. When aesthetic appearance is prioritized, the receiver remains at the first position. When audio quality is prioritized, the receiver moves to the second position where the sound hole projection does not overlap with the target component, eliminating gap-induced noise. This dynamic adjustment resolves the contradiction between shape and harmful factors.
3Volume of moving object
If the receiver uses a narrow slit design, then the device compactness is improved, but the audio volume decreases due to gap restrictions
Solution Approach 1:
The receiver's movable design allows the terminal to maintain compact form factor when the receiver is retracted at the first position. When audio output is needed, the receiver extends to the second position, increasing the effective sound hole opening and eliminating gap restrictions. This dynamic configuration resolves the contradiction between volume (compactness) and reliability (audio output volume).
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 method effectively prevents noise, poor sound quality, and low volume issues by optimizing the receiver's position relative to the target component, improving overall sound quality by reducing the influence of gaps on audio signal transmission.
Implementation Method 1
an audio signal sent by the receiver is picked up by using a microphone
Data Source
AI summary
A receiver control method includes: when a receiver of a terminal is at a first position of the terminal, picking up, by using a microphone, an audio signal sent by the receiver; and if there is a noise in the audio signal picked up by the microphone, moving the receiver to a second position of the terminal. When the receiver is at the first position, an orthographic projection of a first sound hole of the receiver along a first direction at least partially overlaps with a target component. When the receiver is at the second location, the orthographic projection of the first sound hole along the first direction does not overlap with the target component.