Microphone Voice Wake-Up Mode Switching
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Solution Overview
Problem
Current microphones in mobile terminals consume unnecessary power when idle and lack an efficient method to transition from standby to operating mode, resulting in non-ideal user interaction.
Innovation Solution
A microphone with a voice wake-up function that includes a transducer, control module, and determining module, which switches between sleeping and operating modes based on predetermined sound signal conditions, such as frequency and amplitude ranges, to conserve power and activate only upon valid voice input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the microphone is kept in operating mode continuously, then the voice communication function is always available, but the power consumption increases unnecessarily
Solution Approach 1:
The microphone system dynamically adjusts its operational state based on real-time voice activity detection. The determining module continuously monitors the audio signal and switches between operating mode and sleeping mode according to whether voice signals are detected, optimizing the balance between availability and power consumption
Solution Approach 2:
The system employs periodic voice activity detection at predetermined intervals to determine whether to maintain operating mode or transition to sleeping mode. This periodic monitoring ensures the microphone remains available when needed while conserving power during idle periods
2Use of energy by moving object
If the microphone switches to sleeping mode to save power, then energy consumption is reduced, but the response time to activate increases
Solution Approach 1:
The determining module performs preliminary voice activity detection even when the microphone is in sleeping mode. By continuously monitoring for wake-up keywords or voice signals and preparing to activate, the system minimizes actual activation delay while maintaining low power consumption during idle states
Solution Approach 2:
The system uses feedback from the voice activity detection results to control the switching between modes. When voice signals meeting predetermined conditions are detected, the feedback triggers immediate activation, ensuring rapid response while maintaining energy efficiency during silent periods
3Reliability
If the microphone uses complex voice detection algorithms to distinguish valid voice signals, then false activation is reduced, but the device complexity increases
Solution Approach 1:
The system determines voice signal validity by comparing detected parameters (frequency range, amplitude, duration) against predetermined threshold values. This parameter-based approach provides reliable voice detection without requiring complex algorithms, maintaining simplicity while ensuring accurate distinction between valid voice signals and background noise
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 solution reduces power consumption by maintaining the microphone in a sleeping mode until valid voice signals are detected, thereby saving energy and enhancing user interaction by ensuring timely activation upon voice input.
Implementation Method 1
the microphone body comprises at least one transducer for collecting sound signal
Data Source
AI summary
This present disclosure relates to the speech processing technology, more specifically, to a microphone. A microphone with voice wake-up function includes a microphone body with at least one transducer for collecting sound signals, a control module and a determining module. The microphone body is performed in a sleeping mode or an operating mode through the control module in accordance with the determined result. The invention enables the microphone body to switch between the sleeping mode and the operating mode. The sleeping mode reduces unnecessary power consumption and saves electrical energy. When a certain condition is satisfied, the body of the microphone is activated from the sleeping mode and enters into the normal operating mode.