Method and system for providing a speech-based service, in particular for the control of room control elements in buildings

A system for providing a speech-based service for a building management system, the system comprising:

• a trustworthy anonymization service configured to receive speech instructions from a user and to generate anonymized speech instructions so an identity of the user is not associated with the instructions, wherein generating anonymized speech instructions includes randomized speech alienation to increase an entropy value of the speech instructions issued by the user;
• an audio device to receive the anonymized speech instructions from the anonymization service to analyze the received speech instructions, to convert the instructions into corresponding operating commands for control of devices and/or programs in a building, and to transmit the commands to the devices and/or programs;
• wherein the audio device comprises a processor and a memory storing a speech cache with standardized or frequently used speech instructions for use as anonymized instructions, wherein the speech instructions correlate to building structures;
• wherein the audio device generates feedback for the user and transmits the feedback to the anonymization service;
• wherein the anonymization service transmits the feedback to the user;
• wherein removing identifying features allows retraceability between the user speaking the speech instructions and the anonymization service, but blocks retraceability between the user and the audio device;
• wherein the anonymization service acts as a proxy for the user, veiling the user's identity, wherein the proxy appears as one instance in relation to a provider of the anonymization service with increased entropy.

A non-transitory computer-readable storage medium storing instructions which, when executed by a processor, cause the processor to execute a method for providing a speech-based service for a building management system, the method comprising:

• providing an anonymization service converting received speech instructions from a user to anonymized speech instructions without a recognizable identity of the user, wherein converting the instructions includes randomized speech alienation to increase an entropy value of the speech instructions issued by the user;
• analyzing the received anonymized speech instructions;
• converting the received instructions into corresponding operating commands for the building management system;
• transmitting the operating commands to the building management system;
• generating feedback for the user at various elements of the building management system;
• and
• transmitting the feedback to the user via the anonymization service;
• wherein an audio device comprises a processor and a memory storing a speech cache with standardized or frequently used speech instructions for use as anonymized instructions, wherein the speech instructions correlate to building structures;
• wherein converting the received speech instructions allows retraceability between the user speaking the speech instructions and the anonymization service, but blocks retraceability between the user and the audio device;
• wherein the anonymization service acts as a proxy for the user, veiling the user's identity, wherein the proxy appears as one instance in relation to the building management system with increased entropy.