Wireless Speaker Gesture Control During High-Volume Playback
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Solution Overview
Problem
Audio devices with voice operation functions struggle to recognize user commands when output volume is high, requiring users to manually operate the device for instructions.
Innovation Solution
Incorporating both voice and motion command recognition systems, utilizing a camera to detect user gestures alongside voice commands, allowing remote operation even at high audio volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the audio output volume is increased, then the audio playback performance is improved, but the voice command recognition accuracy deteriorates
Solution Approach 1:
The patent divides the command recognition function into two independent segments: voice command recognition and motion command recognition. Each segment uses its own dedicated sensor (microphone for voice, camera for motion), allowing them to operate independently without interference. This segmentation enables the system to maintain both high audio output volume and accurate command recognition by processing voice and motion commands through separate channels.
Solution Approach 2:
The patent implements a universal command recognition system that can accept multiple types of commands (voice and motion) through a single integrated control unit. The control unit is designed to process both voice commands and motion commands, making the system adaptable to different user preferences and usage scenarios. This multi-functionality allows the system to maintain high audio output while preserving command recognition accuracy through alternative input methods.
2Ease of operation
If voice command recognition is used, then remote operation without physical contact is achieved, but operation reliability deteriorates when audio volume is high
Solution Approach 1:
The patent introduces motion command recognition as an intermediary mechanism that complements voice command recognition. When the audio output volume is high and voice recognition becomes unreliable, the motion recognition system acts as an intermediary alternative, allowing users to control the audio device through gestures detected by the camera. This intermediary approach maintains remote operation convenience while improving reliability under high-volume conditions.
Solution Approach 2:
The patent dynamically changes the operational parameters of the command recognition system based on audio output volume. When the volume is high, the system switches from relying primarily on voice commands to accepting motion commands as well. This parameter change in the command acceptance criteria allows the system to adapt to varying audio volumes while maintaining both ease of operation and reliability.
3Device complexity
If only voice command recognition is implemented, then device complexity is reduced, but adaptability to high-volume conditions deteriorates
Solution Approach 1:
The patent merges voice command recognition and motion command recognition into a single integrated control system. Both recognition functions share common components such as the control unit, processing architecture, and command execution mechanisms. This merging approach increases adaptability to high-volume conditions by providing multiple input methods while keeping the overall device complexity manageable through shared infrastructure and unified control logic.
Data Source
AI summary
[Problem] To provide an audio device with which remote operation is possible without using a remote controller, even during audio output. [Solution] A wireless speaker 1 is provided with a speech command recognizing unit 17 which subjects a speech signal input into a microphone 11 to speech recognition processing to recognize an utterance of a listener, and detects a speech commands of the listener from the recognition result, and is additionally provided with; a motion command recognizing unit 18 which subjects a video signal captured by a camera 12 to motion recognition processing to recognize a gesture of the listener, and detects a motion command of the listener from the recognition result; and a main control unit 20 which implements various types of control of the wireless speaker 1 on the basis of the speech command recognized by the speech command recognizing unit 17 and the motion command recognized by the motion command recognizing unit 18.