Voice Prompt Optimization via Dynamic Speech Parameter Adjustment
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Solution Overview
Problem
Existing automated telephony systems lack the ability to optimize speech parameters effectively, resulting in unclear and unnatural voice prompts that fail to engage a wide range of listeners, particularly in terms of indicating questions and sensitive information.
Innovation Solution
The system optimizes speech parameters such as pitch, duration, and loudness to produce voice prompts that are more natural and effective, using tailored pitch accents and other parameters based on context and demographics, allowing for clear differentiation between questions and information, and adjustment for different languages and populations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If automated telephony systems use standard voice prompts, then the system operation is simple, but the clarity and naturalness of speech is poor
Solution Approach 1:
The system dynamically adjusts multiple speech parameters including pitch contours, pause durations, syllable lengths, and loudness levels to optimize the naturalness and clarity of voice prompts. This involves analyzing the semantic content and modifying acoustic parameters accordingly, such as lowering pitch for important information and extending pauses before questions.
Solution Approach 2:
The voice synthesis system transitions from static, pre-recorded prompts to dynamic, adaptive speech generation that responds to contextual factors. The system continuously adjusts speech parameters based on real-time analysis of the prompt content, ensuring optimal delivery for different types of information (questions, statements, warnings).
2Loss of information
If speech parameters are optimized for naturalness, then listener comprehension improves, but processing time increases
Solution Approach 1:
The system performs preliminary analysis of the voice prompt content to identify key semantic elements, information types (question, statement, warning), and important words before generating the speech. This pre-processing allows the system to pre-determine optimal pitch contours, pause locations, and emphasis patterns, reducing real-time processing delays while maintaining high comprehension levels.
3Adaptability or versatility
If pitch accents and speech parameters are tailored to context and demographics, then adaptability improves, but device complexity increases
Solution Approach 1:
The system applies different speech parameter settings tailored to specific demographic groups and contextual situations. This includes adjusting pitch ranges, speech rates, and pause durations based on the target audience characteristics and the specific type of information being conveyed, creating locally optimized speech delivery for different scenarios.
Data Source
AI summary
Methods and systems are described in which spoken voice prompts can be produced in a manner such that they will most likely have the desired effect, for example to indicate empathy, or produce a desired follow-up action from a call recipient. The prompts can be produced with specific optimized speech parameters, including duration, gender of speaker, and pitch, so as to encourage participation and promote comprehension among a wide range of patients or listeners. Upon hearing such voice prompts, patients/listeners can know immediately when they are being asked questions that they are expected to answer, and when they are being given information, as well as the information that considered sensitive.