Playback Speed Optimization for Audio Speech Rate Adaptation
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Solution Overview
Problem
Traditional playback systems with adjustable speed controls do not dynamically adjust based on the speech rate of media being played, making it impractical and potentially dangerous for listeners, especially when multitasking, as speech rates vary significantly among individuals and situations.
Innovation Solution
A system that identifies a user's preferred words-per-minute and adjusts playback speed by calculating a playback speed adjustment value based on the actual words-per-minute of the audio segment, allowing for dynamic adjustment of playback speed to match the user's preference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional adjustable playback speed controls are used, then users can manually change playback speed, but the system does not dynamically adjust based on speech rate variations
Solution Approach 1:
The system automatically detects speech rate in the audio content and adjusts playback speed without requiring manual user intervention. The playback device performs self-service by analyzing the audio stream, determining actual speech rate, and dynamically adjusting playback speed to match user preferences, eliminating the need for continuous manual control.
Solution Approach 2:
The system implements a feedback loop where the actual speech rate is continuously detected from the audio content, compared against the user's preferred speech rate, and the playback speed is adjusted accordingly. This closed-loop control ensures the playback speed dynamically adapts to the actual speech rate in the media being played.
2Ease of operation
If manual playback speed adjustment is required, then users can control listening speed, but it becomes impractical and dangerous during activities like driving
Solution Approach 1:
The playback device autonomously performs speech rate detection and playback speed adjustment without requiring any manual input from the user. This self-service capability enables safe hands-free operation during activities like driving, as the system automatically adapts to the audio content's speech rate based on pre-configured user preferences.
Solution Approach 2:
The system pre-establishes the user's preferred speech rate in advance, allowing it to automatically adjust playback speed without real-time user intervention. This preliminary configuration enables the system to autonomously optimize playback speed for various speech rates encountered during listening activities.
3Adaptability or versatility
If fixed playback speed is used, then the system is simple to operate, but it cannot accommodate varying speech rates of different speakers
Solution Approach 1:
The system dynamically changes the playback speed parameter based on the detected speech rate in the audio content. By adjusting this key parameter automatically, the system accommodates varying speech rates of different speakers while maintaining a relatively simple overall device architecture, as the complexity is confined to the automatic detection and adjustment mechanism.
Data Source
AI summary
An approach is provided that identifies a preferred words-per-minute corresponding to a user listening to an audio. The actual words-per-minute of a selected audio segment is determined and used to calculate a playback speed adjustment value based on the preferred words-per-minute and the actual words-per-minute. A playback speed is adjusted according to the calculated playback speed adjustment value and the audio segment is audibly played at the adjusted first playback speed.