EP 0984433 A2 20000308 - Noise suppresser speech communications unit and method of operation
Title (en)
Noise suppresser speech communications unit and method of operation
Title (de)
Rauschunterdrückung in einer Sprachkommunikationseinheit und Betriebsverfahren
Title (fr)
Suppression de bruit dans une unité de communication vocale et méthode d'opération
Publication
Application
Priority
GB 9819224 A 19980904
Abstract (en)
A speech communications unit is provided. The speech communications unit includes a speech processor for receiving an input speech signal having a periodic noise interferer (50, 70), the speech processor being operably coupled to a noise determining means (52, 72) for determining an amplitude of the periodic noise interferer a gaussian noise generator (54, 74) for generating a known gaussian noise sequence and combining the speech signal with the known gaussian noise sequence to provide a resultant signal, and inputting the resultant signal into a noise suppression procedure to provide a noise suppressed speech signal. The speech processor determines an amplitude level of the suppressed gaussian noise and subtracts a respective level of suppressed gaussian noise from the resultant signal thereby reducing the periodic noise content in the speech signal. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 21/0208 (2013.01)
CPC (source: EP)
G10L 21/0216 (2013.01); G10L 2021/02085 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0984433 A2 20000308; GB 2341299 A 20000308; GB 9819224 D0 19981028
DOCDB simple family (application)
EP 99117227 A 19990902; GB 9819224 A 19980904