Local Voice Processing Hub for Media Playback Privacy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing voice-assisted media playback systems face challenges in balancing user privacy concerns with the need for advanced voice recognition capabilities, as cloud-based voice assistants may compromise privacy by processing user data remotely.
Innovation Solution
Implementing a local voice processing hub device with enhanced voice analysis components, capable of performing local spoken language understanding, while satellites with limited capabilities can fall back to the hub or cloud for processing, maintaining user privacy by keeping voice data local.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cloud-based voice assistants are used for voice processing, then advanced voice recognition capabilities are achieved, but user privacy is compromised by processing user data remotely
Solution Approach 1:
The system segments voice processing functions between local hub devices and cloud services. The hub device performs local spoken language understanding for media playback commands, while complex voice analysis can be offloaded to the cloud when needed. This segmentation allows the system to maintain privacy by processing data locally while still accessing advanced cloud-based voice recognition capabilities when necessary.
Solution Approach 2:
The patent implements local voice processing capabilities at the hub device level, enabling spoken language understanding to occur locally rather than requiring all processing to be done in the cloud. This local quality approach allows the system to process voice data locally for privacy while maintaining the option to use cloud services for enhanced capabilities.
2Object-affected harmful factors
If local voice processing is implemented to protect privacy, then user privacy is enhanced, but device complexity increases due to enhanced voice analysis components
Solution Approach 1:
The system divides voice processing complexity across multiple devices: simple satellite devices handle basic voice commands, while enhanced hub devices with local spoken language understanding handle more complex analysis. This segmentation distributes the complexity burden rather than requiring all devices to have full processing capabilities.
Solution Approach 2:
The patent implements partial local processing capabilities in hub devices, providing just enough local spoken language understanding to handle media playback commands without implementing the full suite of voice analysis functions. This partial action approach reduces the complexity burden while still achieving the privacy benefit of local processing.
3Device complexity
If satellites with limited processing capabilities are used, then device complexity is reduced, but voice processing reliability decreases when falling back to hub or cloud
Solution Approach 1:
The system implements feedback mechanisms where satellites can detect when they cannot process a voice command locally and automatically fall back to the hub device or cloud services. This feedback loop ensures reliable voice processing by switching between processing levels based on capability and availability.
Solution Approach 2:
The hub device serves as an intermediary between satellites and cloud services, providing a relay for voice processing. When satellites cannot handle complex voice commands locally, they can fall back to the hub which can either process the command locally or forward it to the cloud, ensuring continuous reliable operation.
Data Source
AI summary
Example techniques relate to local voice control in a media playback system. A satellite device (e.g., a playback device or microcontroller unit) may be configured to recognize a local set of keywords in voice inputs including context specific keywords (e.g., for controlling an associated smart device) as well as keywords corresponding to a subset of media playback commands for controlling playback devices in the media playback system. The satellite device may fall back to a hub device (e.g., a playback device) configured to recognize a more extensive set of keywords. In some examples, either device may fall back to the cloud for processing of other voice inputs.