Communication Device Audio Muting via Signal Energy Detection
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Solution Overview
Problem
Communication devices struggle to quickly and reliably mute audio outputs during the transmission and reception of data packets that do not include speech, leading to potential interference and inefficiencies in systems like emergency call systems.
Innovation Solution
A communication device with a receiver, determination circuit, and processor that generates a mute instruction if the energy level of a signal in a predefined audio frequency range exceeds a threshold, ensuring the audio output is muted based on specific energy level sequences, using algorithms like Discrete Fourier Transform to determine energy levels and manage audio output states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the communication device mutes audio output during data packet transmission, then communication efficiency is improved, but audio output reliability deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting energy levels in audio frequency ranges before data packet transmission begins. The processor monitors signal energy continuously and prepares mute instructions in advance when speech is detected to be interrupted, ensuring seamless audio muting without affecting reliability.
Solution Approach 2:
The determination circuit continuously provides feedback about signal energy levels to the processor. This feedback mechanism allows the system to dynamically adjust audio output based on real-time conditions, muting only when necessary and restoring audio when speech resumes, thereby maintaining both efficiency and reliability.
2Ease of operation
If the communication device uses energy level detection to control audio output, then audio clarity is improved, but device complexity increases
Solution Approach 1:
The determination circuit serves multiple functions: it detects energy levels for audio muting control, identifies speech presence, and provides timing information for packet transmission. This multi-functionality reduces the need for separate dedicated circuits, thereby limiting the increase in device complexity while achieving improved audio clarity.
Solution Approach 2:
The system changes parameters by monitoring energy levels in specific audio frequency ranges and comparing them against thresholds. The processor adjusts audio output parameters based on these energy level measurements, achieving clear audio control through parameter changes rather than complex structural modifications.
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
Effectively prevents audio output during data packet transmission or reception, ensuring clear communication and compatibility with emergency call systems by reliably determining when to mute or activate audio based on energy thresholds, enhancing system efficiency and user experience.
Implementation Method 1
a determination circuit configured to determine an energy level of the signal
Implementation Method 2
if the energy level of the signal in a predefined audio frequency range is equal to or exceeds a first threshold in a first time period, and if an energy level sequence of a plurality of determined energy levels in the predefined audio frequency range in a second time period following the first time period is determined
Data Source
AI summary
A communication device is provided that includes a receiver configured to receive a signal. The communication device further includes a determination circuit configured to determine an energy level of the signal and to decode the signal as voice or encoded data. The communication device further includes at least one processor configured to generate an instruction to mute or unmute an audio output based on the energy level of the signal in a predefined audio frequency range.