Voice Amplitude Talker Arbitration for Natural PoC Floor Control
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Solution Overview
Problem
Conventional press-to-talk systems in half-duplex communication, such as PoC, require users to manually assert floor control using a tactile button, which is not natural in human conversations and limits seamless turn-taking.
Innovation Solution
A system and method that arbitrate talker control based on the amplitude of a user's voice, allowing users to interrupt others by selecting the speaker with the higher speech energy level, optionally considering static and dynamic priority levels, to grant floor control without the need for a separate button press.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tactile button press scheme is used for talker arbitration, then floor control acquisition is clear and controllable, but the operation becomes unnatural and inconvenient for human conversation
Solution Approach 1:
The patent replaces the mechanical button-pressing system with an acoustic field-based system. The talker arbitration is achieved by detecting and comparing the acoustic energy levels of different speakers, allowing natural voice-based floor control without mechanical interaction. This substitution transforms the control mechanism from manual tactile operation to automatic acoustic detection.
Solution Approach 2:
The system enables speakers to automatically assert floor control through their own voice energy without requiring manual activation. The acoustic detection system automatically identifies which speaker has the highest energy level and grants them floor control, making the system self-regulating based on natural conversation dynamics.
2Ease of manufacture
If manual button pressing is required to assert floor control, then talker arbitration is straightforward to implement, but it adds unnecessary steps and reduces conversation naturalness
Solution Approach 1:
The system continuously monitors and detects acoustic energy levels from all participants in advance, so when a speaker naturally begins to speak with higher energy, the floor control is already prepared and can be immediately granted. This eliminates the time delay associated with manual button pressing.
Solution Approach 2:
The mechanical action of button pressing is replaced by automatic acoustic detection and energy level comparison, eliminating the additional time step required for manual activation and making the floor control assertion occur naturally as part of the conversation flow.
3Ease of operation
If first-come first-served arbitration is used in half-duplex communication, then the system is simple to operate, but it prevents interruption and reduces conversational flexibility
Solution Approach 1:
The patent transforms the static first-come first-served arbitration into a dynamic system where floor control can change based on real-time acoustic energy levels. This allows speakers to naturally interrupt others by speaking with higher energy, making the arbitration adaptive to the actual conversational dynamics rather than rigidly following who pressed the button first.
Solution Approach 2:
The arbitration criterion changes from temporal (who pressed first) to acoustic (who has higher energy level). This parameter change enables the system to adapt to natural conversation patterns where interruption occurs through increased vocal energy, providing both simplicity and conversational flexibility.
Data Source
AI summary
One embodiment of the invention is based on a facilitation of the natural dynamics associated with face to face conversation, where the amplitude of a speaker's voice is often used to gain floor control. This capability advantageously allows a user who is intending to speak to interrupt a user who currently has floor control. By basing talker arbitration at least partially on the amplitude of the speaker's voice, the invention removes the need for a user to push a separate button on the handset before the commencement of speech.