Secure Text-to-Speech Synthesis with Voiceprint Authentication
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Solution Overview
Problem
Existing text-to-speech synthesis systems lack secure mechanisms to ensure that voice synthesis is performed in the natural voice of the message originator, while preventing unauthorized use or distribution of the voice.
Innovation Solution
A method and system for secure text-to-speech synthesis that authenticates the originator and recipient of text-based content, using a voiceprint associated with the originator to convert the content into an audio format, ensuring that only trusted recipients can access and use the originator's voice for synthesis, employing server-side and device-side authentication techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If text-to-speech synthesis uses the originator's voiceprint to convert text-based content, then the naturalness and personalization of the synthesized speech is improved, but the risk of unauthorized use and voice privacy breaches increases
Solution Approach 1:
The system performs preliminary authentication of both the originator and recipient before allowing voiceprint-based synthesis. The originator's voiceprint is registered in advance with the server, and authentication credentials are established beforehand. This preliminary setup enables the system to verify identities before synthesis occurs, ensuring that only authorized parties can access or use the voiceprint, thus resolving the contradiction between natural speech and unauthorized use risk
Solution Approach 2:
A server acts as an intermediary between the originator, recipient, and voiceprint data. The server securely stores the voiceprint, performs authentication of both parties, and controls the synthesis process. This intermediary mechanism prevents direct access to the voiceprint by unauthorized parties while still enabling natural speech synthesis when proper authentication occurs, thus protecting against unauthorized use while maintaining speech naturalness
2Reliability
If authentication mechanisms are implemented to secure voiceprint access, then voice privacy and security are improved, but the system complexity increases
Solution Approach 1:
The server performs multiple functions including voiceprint storage, originator authentication, recipient verification, and synthesis control within a single system. This multi-functional approach consolidates what would otherwise require multiple separate security systems, achieving strong authentication and voice privacy protection without proportionally increasing overall system complexity
Solution Approach 2:
The originator registers their own voiceprint and authentication credentials with the server, and the system automatically manages the verification process. This self-service approach reduces the need for manual security management and complex external authentication infrastructure, achieving reliable security while keeping the system relatively simple
3Adaptability or versatility
If the originator's voiceprint is stored and processed, then the personalization of text-to-speech output is improved, but the vulnerability to voice misuse and distribution increases
Solution Approach 1:
The system establishes authentication credentials and permissions in advance during the voiceprint registration process. The originator's identity is verified and linked to their voiceprint before any synthesis occurs. This preliminary authentication framework ensures that personalization through voiceprint use can proceed while preventing misuse, as the system already has verified identity information on file
Solution Approach 2:
The server acts as an intermediary that controls access to the stored voiceprint data. Rather than allowing direct access to the originator's voice recordings or synthesized output, the server mediates all interactions by verifying recipient authentication and originator identity. This intermediary control enables personalized speech output while preventing unauthorized distribution or misuse of the voiceprint
Data Source
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AI summary
A method for secure text-to-speech conversion of text using speech or voice synthesis that prevents the originator's voice from being used or distributed inappropriately or in an unauthorized manner is described. Security controls authenticate the sender of the message, and optionally the recipient, and ensure that the message is read in the originator's voice, not the voice of another person. Such controls permit an originator's voiceprint file to be publicly accessible, but limit its use for voice synthesis to text-based content created by the sender, or sent to a trusted recipient. In this way a person can be assured that their voice cannot be used for content they did not write.