The linguistic (text) content of a speech signal can contain almost anything.However, information which speech at least contains includes for example Speech signals contain a wide variety of information which are often potentially private or even sensitive and it is difficult or impossible to list all categories of potential information. Covert listening is usually allowed only for the police and even for them only in specially regulated situations, such as with a permission granted by a court or judge. In typical jurisdictions, telephone calls are private in the sense that only the "intended" participants can listen to them and sometimes even recording them is restricted. Observe that in the isolated category of telephony (classical telephone connections) privacy and security already have well-established ethical standards as well as legislation. Such use cases fall mainly under the discussions under speaker recognition and verification, and not discussed further here. The latter aspect is mainly related to speaker identity fraudsters can for example synthesise speech which mimics (spoofs) a target person to gain access to restricted systems, such as access to the bank account of the target person. Protection against attacks which use speech signals as a tool.Security and privacy of data related to speech signals and.It however must be emphasised that there are no widely shared and accepted definitions and in particular, the legal community has a wide range of definitions depending on the context and field of application.įrom the perspective of speech technology, security and privacy has two principal aspects A possible definition of privacy would then be "the absence of attention from others" and correspondingly security could be defined as the protection of that which one owns, including material and immaterial things. It is however clear that people tend to think that some things are "theirs", that they have ownership of things, including information about themselves.
The right to privacy is a widely accepted concept though its definition varies. In real-life application of technology and data collection, you must consult legal experts to determine whether you follow the law. In particular, this is not a legal document. DISCLAIMER: This document is meant to be an introduction to questions in security and privacy in speech technology for engineering students, such that they would understand the main problematic.
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