Far-Field Audio Playback Control for Natural Conversation
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Solution Overview
Problem
Conventional audio playback devices often hinder natural conversations by remaining active and overpowering user speech, as they require a specific 'wake word' for activation, leading to interference in audio playback during regular conversations.
Innovation Solution
An audio playback system with far-field audio inputs that can receive and process content-agnostic voice inputs, allowing for the modification of audio playback characteristics such as volume, bass, or treble based on predefined thresholds or patterns, enabling seamless integration with user interactions without the need for a specific wake word.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the audio playback device remains active and requires a wake word for deactivation, then the device can respond to user commands, but the audio playback hinders natural conversations and overshadows user speech
Solution Approach 1:
The audio playback device dynamically adjusts its operational state based on real-time voice activity detection. The system transitions between different modes (active playback, paused playback, voice enhancement) depending on whether conversation is detected, allowing the device to adapt its behavior to the current social context rather than requiring explicit wake words
Solution Approach 2:
The system continuously monitors the audio environment using microphones to detect voice activity and conversation patterns. This feedback loop enables the device to automatically sense when users are engaged in natural conversation and adjust audio playback accordingly, creating a responsive system that adapts to user needs without requiring explicit commands
2Measurement precision
If the audio playback device pauses or eliminates audio playback when wake word is recognized, then user commands can be heard clearly, but natural conversations without wake word are hindered
Solution Approach 1:
The system performs preliminary voice activity detection and conversation pattern recognition before making playback adjustments. By continuously analyzing audio inputs and identifying conversation contexts in advance, the device can proactively adjust playback levels to facilitate natural conversations without waiting for wake words
Solution Approach 2:
The system changes multiple audio parameters simultaneously including playback volume, voice enhancement levels, and noise suppression settings based on detected conversation context. This multi-parameter adjustment allows the device to optimize both command recognition and natural conversation scenarios
3Power
If the audio playback volume is increased to ensure clear playback, then audio output is enhanced, but user speech becomes harder to hear during conversations
Solution Approach 1:
The audio output power is dynamically adjusted based on real-time detection of user speech activity. When conversation is detected, the system automatically reduces playback volume or mutes audio output, ensuring user speech remains intelligible. This dynamic power control eliminates the need to maintain high constant output power while preserving speech clarity
Data Source
AI summary
An audio system and method for modifying an audio playback including configuring an audio playback device, the audio playback device comprising a plurality of far-field audio inputs; generating the audio playback via the audio playback device; receiving, via at least one far-field audio input of the plurality of far-field audio inputs, a content-agnostic audio input from a first position within an environment; and, modifying the audio playback in response to the content-agnostic audio input.