Dual Speaker Wireless Telephone Design
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Solution Overview
Problem
Conventional wireless telephones with composite speakers face challenges in size constraints, leading to increased thickness and reduced portability due to insufficient space for mounting speakers, which affects voice delivery and polyphonic sound generation.
Innovation Solution
The implementation of a wireless telephone with at least two speakers, where a first speaker is mounted on the folder housing and a second speaker on the body housing, allowing for efficient audio signal processing and reduced overall size by separating the mounting locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a composite speaker is mounted on the front of the main printed circuit board, then voice output is improved, but the wireless telephone becomes thicker due to insufficient space
Solution Approach 1:
The single composite speaker is divided into two separate speakers: a first speaker (voice speaker) mounted on the front of the main printed circuit board for voice output, and a second speaker (buzzer speaker) mounted on the rear of the main printed circuit board for signaling tones. This segmentation allows each speaker to be optimized for its specific function while reducing the overall thickness requirement of the telephone.
2Area of stationary object
If a composite speaker is mounted on the rear of the main printed circuit board, then mounting space is sufficient, but voice delivery to the front casing is poor
Solution Approach 1:
The speaker functions are segmented and assigned to different locations: the first speaker is positioned on the front of the main printed circuit board to deliver voice directly to the front casing, while the second speaker is positioned on the rear to generate signaling tones. This spatial segmentation resolves the conflict between mounting space availability and voice delivery quality.
3Adaptability or versatility
If the number of polyphonic levels is increased, then sound generation capability is improved, but the speaker size must increase
Solution Approach 1:
The speaker system is segmented into two specialized speakers: a voice speaker optimized for polyphonic sound generation and a buzzer speaker optimized for signaling tones. This segmentation allows the voice speaker to maintain a compact size while supporting high polyphonic levels, as it only needs to handle voice frequencies rather than the full audio spectrum including low-frequency buzzer tones.
4Ease of operation
If a speaker is mounted on the upper portion of the LCD, then voice output is achieved, but the total size of the wireless telephone increases reducing portability
Solution Approach 1:
Instead of mounting the speaker on the upper portion of the LCD (vertical dimension), the first speaker is mounted on the front of the main printed circuit board and the second speaker on the rear, utilizing the depth dimension of the device. This dimensional change allows voice output capability while maintaining a compact overall shape and improving portability.
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 configuration reduces the size of the wireless telephone, enhances voice delivery, and maintains portability by optimizing speaker placement, enabling better sound output and user experience.
Implementation Method 1
a first speaker mounted on a folder housing of the wireless telephone, and a second speaker mounted on a body housing of the wireless telephone
Data Source
AI summary
A method and apparatus for a wireless telephone having at least two speakers include a first speaker mounted on a folder housing of the wireless telephone; and a second speaker mounted on a body housing of the wireless telephone. The first and second speakers can be a telephone conversation speaker or a multimedia speaker, where the multimedia speaker outputs a message reception alert tone or a ringing tone. The method and apparatus further include a rotary section for rotating the folder housing, where the first or second speakers can be mounted on the rotary section.