Patent ID: 7146317

Claim:
A speech recognition device ( 8 ) to which can be applied via a first receive channel ( 21 ) and a second receive channel ( 25 , 28 ) speech information (SI) colored by the respective receive channel ( 21 , 25 , 28 ), wherein the device used on the first channel is different that the device used on the second channel, the speech recognition device comprising: reference storage means ( 36 ) for storing reference information (RI 1 ) featuring the type of pronunciation of words by a plurality of reference speakers and receive channel adaptation means ( 30 , 38 , 44 ) for adapting the stored reference information (RI, ARI) to the first or second receive channel ( 21 , 25 , 28 ) used by a user, wherein the first reference information (RI 1 , ARI 1 ) and the second reference information (RI 2 , RI 3 , ARI 2 , ARI 3 ) is formed by feature vectors (FV), while each feature vector (FV) features the speech information (SI) in a respective frequency sub-range, and in that the feature vectors (FV) of the first reference information (RI 1 , ARI 1 ) feature the speech information (SI) in different frequency sub-ranges from the feature vectors (FV) of the second reference information (RI 1 , RI 3 , ARI 2 , ARI 3 ); and user adaptation means ( 37 ) for adapting the stored reference information (RI 1 , RI 2 , RI 3 ) to the type of pronunciation of words by the user of the speech recognition device ( 8 ;) and speech recognition means ( 29 ) for recognizing text information (TI) to be assigned to the supplied speech information (SI), while reference information (ARI 1 , ARI 2 , ARI 3 ) adapted by the receive channel adaptation means ( 30 , 38 , 44 ) and the user adaptation means ( 37 ) is evaluated, characterized in that the receive channel adaptation means ( 30 , 38 , 44 ) include reference transformation means (T 1 - 2 , T 1 - 3 , T 2 - 3 ) which are arranged for transforming first reference information (RI 1 , ARI 1 ) adapted to the first receive channel ( 21 )into second reference information (RI 2 , RI 3 , ARI 2 , ARI 3 ) adapted to the second receive channel ( 25 , 28 ) in accordance with a transformation matrix (T 1 - 2 , T 1 - 3 , T 2 - 3 ), while the adapted first reference information (RI 1 , ARI 1 ) to be transformed by the reference transformation means (T 1 - 2 , T 1 - 3 , T 2 - 3 ) may, but need not, already have been adapted to the user by the user adaptation means ( 37 ).