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Title: Speaker distance detection using a single microphone
Authors: Georganti, Eleftheria
May, Tobias
van de Par, Steven
Harma, Aki
Mourjopoulos, John
Issue Date: 2011-12-08
Keywords: Acoustic signal processing
Room acoustics
Acodistance measurement
Source: IEEE Transactions on Audio, Speech, and Language Processing
Abstract: A method to detect the distance of a speaker from a single microphone in a room environment is proposed. Several features, related to statistical parameters of speech source excitation signals, are introduced and are shown to depend on the distance between source and receiver. Those features are used to train a pattern recognizer for distance detection. The method is tested using a database of speech recordings in four rooms with different acoustical properties. Performance is shown to be independent of the signal gain and level, but depends on the reverberation time and the characteristics of the room. Overall, the system performs well especially for close distances and for rooms with low reverberation time and it appears to be robust to small distance mismatches. Finally, a listening test is conducted in order to compare the results of the proposed method to the performance of human listeners.
Appears in Collections:Τμήμα Ηλεκτρολ. Μηχαν. και Τεχνολ. Υπολογ. (Δημοσ. Π.Π. σε περιοδικά)

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