Equal Audio Porting for Handheld Radio Transducers
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Solution Overview
Problem
Hand-held radios face challenges in maintaining consistent audio quality across different orientations and modes of usage, such as data and audio communication, due to the varying orientation of the radio affecting sound perception.
Innovation Solution
An equal audio porting design where a transducer projects sound equally in multiple directions, ensuring that the sound quality remains consistent regardless of the radio's orientation, achieved through symmetrical or non-symmetrical audio channel design and positioning of audio ports to maintain similar spectral distortion and loudness ratings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the transducer is positioned behind the keys to project audio around or through the keypad, then the product size is decreased, but the audio quality varies based on user orientation and usage mode
Solution Approach 1:
The audio port is divided into multiple segments: a first audio port for data communication mode and a second audio port for audio communication mode. Each port is optimized for its specific usage scenario, allowing the transducer to project sound through different pathways depending on the mode, thereby maintaining consistent audio quality across orientations while keeping the product compact.
Solution Approach 2:
Different regions of the device are assigned different audio port functions. The first audio port is positioned and configured specifically for data communication mode (when display and keypad face the user), while the second audio port is configured for audio communication mode (when back faces the user). This local differentiation ensures optimal audio quality for each usage scenario without increasing overall product size.
2Device complexity
If a single audio port is used for both data and audio communication modes, then the device complexity is reduced, but the sound quality perception varies with radio orientation
Solution Approach 1:
The transducer is designed as a multi-functional component that can project sound through different audio ports depending on the usage mode. While there are two audio ports, they share a common transducer and can be controlled through a unified audio processing system, maintaining relatively simple device architecture while achieving mode-specific audio optimization.
Solution Approach 2:
The audio system dynamically switches between using the first audio port for data communication mode and the second audio port for audio communication mode. This dynamic adaptation allows the system to maintain consistent sound quality perception across different orientations and usage scenarios without requiring complex hardware changes.
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 solution ensures that the sound quality is perceptually the same whether the radio is used for data or audio communication, maintaining consistent subjective sound quality across different orientations and usage modes.
Implementation Method 1
The at least one transducer projects sound out of the at least one first audio port and the at least one second audio port
Data Source
AI summary
A device (300) and method (600) for equal audio porting is provided. The device can include a first side with at least one first audio port (182) providing a data communication aspect, a second side with at least one second audio port (184) providing an audio communication aspect, and a transducer (110) positioned between the first side and the second side. The transducer projects sound out of the at least one first audio port and the at least one second audio port such that a quality of the sound through the at least one first audio port and the at least one second audio port are substantially the same.