For identification systems, the utterance is compared against multiple voice prints in order to determine the best match(es) while verification systems compare an utterance against a single voice print. In the verification phase, a speech sample or "utterance" is compared against a previously created voice print. During enrollment, the speaker's voice is recorded and typically a number of features are extracted to form a voice print, template, or model. Variants of speaker recognition Įach speaker recognition system has two phases: enrollment and verification. A 1987 ad for the doll carried the tagline "Finally, the doll that understands you." - despite the fact that it was described as a product "which children could train to respond to their voice." The term voice recognition, even a decade later, referred to speaker independence. At that point, speaker independence was an intended breakthrough, and systems required a training period. One of the earliest training technologies to commercialize was implemented in Worlds of Wonder's 1987 Julie doll. The prosecution and defense use this as evidence to determine if the suspect is actually the offender. ![]() Working to match the samples from the speaker to the list of best matches helps figure out if they are the same person based on the amount of similarities or differences. In forensic applications, it is common to first perform a speaker identification process to create a list of "best matches" and then perform a series of verification processes to determine a conclusive match. Speaker identification systems can also be implemented covertly without the user's knowledge to identify talkers in a discussion, alert automated systems of speaker changes, check if a user is already enrolled in a system, etc. These systems operate with the users' knowledge and typically require their cooperation. Speaker verification is usually employed as a "gatekeeper" in order to provide access to a secure system. In a sense, speaker verification is a 1:1 match where one speaker's voice is matched to a particular template whereas speaker identification is a 1:N match where the voice is compared against multiple templates.įrom a security perspective, identification is different from verification. On the other hand, identification is the task of determining an unknown speaker's identity. If the speaker claims to be of a certain identity and the voice is used to verify this claim, this is called verification or authentication. There are two major applications of speaker recognition technologies and methodologies. ![]() These acoustic patterns reflect both anatomy and learned behavioral patterns. ![]() Speaker recognition has a history dating back some four decades as of 2019 and uses the acoustic features of speech that have been found to differ between individuals. Recognizing the speaker can simplify the task of translating speech in systems that have been trained on specific voices or it can be used to authenticate or verify the identity of a speaker as part of a security process. Speaker verification (also called speaker authentication) contrasts with identification, and speaker recognition differs from speaker diarisation (recognizing when the same speaker is speaking). It is used to answer the question "Who is speaking?" The term voice recognition can refer to speaker recognition or speech recognition. Speaker recognition is the identification of a person from characteristics of voices. Recognition of a speaker from their voice
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |