Dynamic TTS Output Adaptation for Speech-Controlled Devices
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Solution Overview
Problem
Speech processing systems face challenges in providing a dynamic and user-centric experience, as they often output all default TTS content and speech at a constant speed, which may not align with the user's current situation or preferences, potentially leading to an undesirable experience, especially when the user is in a hurry or has limited time.
Innovation Solution
The system dynamically alters TTS output based on the number of words spoken, speech characteristics, electronic calendar data, and geographic location, allowing for truncated responses, faster speech synthesis, and tailored content delivery to enhance user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the system outputs all default TTS content at a constant speed, then the information completeness is maintained, but the user experience deteriorates when the user is in a hurry or has limited time
Solution Approach 1:
The TTS output is made dynamic by adjusting both the content length and speech speed based on real-time analysis of user speech characteristics. The system analyzes the rate of speech, number of words, and speech characteristics of the input command, then dynamically modifies the output accordingly - truncating content and increasing speed when the user speaks quickly, and providing complete content at normal speed when the user speaks slowly.
2Loss of information
If the system provides complete TTS content, then the information accuracy is improved, but the response time increases which is undesirable when the user is in a hurry
Solution Approach 1:
The system changes multiple parameters of the TTS output based on user speech analysis: (1) content length parameter - truncating or providing complete responses; (2) speech speed parameter - adjusting the rate of speech synthesis. These parameter changes are determined by analyzing the input speech characteristics, allowing the system to optimize the balance between information accuracy and response time for each user interaction.
3Device complexity
If the system uses constant speech speed for TTS output, then the system complexity is reduced, but the user experience deteriorates when users have different speech patterns and time constraints
Solution Approach 1:
The system implements feedback by analyzing the user's input speech characteristics (rate of speech, number of words, speech characteristics) and using this feedback to adjust the TTS output parameters. This closed-loop approach allows the system to adapt to individual user preferences and contexts, significantly improving user experience while maintaining manageable system complexity through automated analysis and adjustment.
Data Source
AI summary
Systems, methods, and devices for dynamically outputting TTS content are disclosed. A speech-controlled device captures a spoken command, and sends audio data corresponding thereto to a server(s). The server(s) determines output content responsive to the spoken command. The server(s) may also determine a user that spoke the command and determine an average speech characteristic (e.g., tone, pitch, speed, number of words, etc.) used by the user when speaking commands. The server(s) may also determine a speech characteristic of the presently spoken command, as well as determine a difference between the speech characteristic of the presently spoken command and the average speech characteristic of the user. The server(s) may then cause the speech-controlled device to output audio based on the difference.