Abstract: In a voice pitch normalization device equipped in a voice recognition device VRAp for recognizing an incoming command voice Sva uttered by any speaker, and used to normalize the incoming command voice to be in an optimal pitch for voice recognition, a target voice generator produces a target voice signal by changing the incoming command voice Svd on the basis of a predetermined degree. A probability calculator calculates a probability indicating a degree of coincidence among the target voice signal and a plurality of words in sample data. A voice pitch changer repeatedly changes the target voice signal in voice pitch until a maximum probability becomes a predetermined probability or greater.

Abstract: In a voice pitch normalization device equipped in a voice recognition device VRAp for recognizing an incoming command voice Sva uttered by any speaker, and used to normalize the incoming command voice to be in an optimal pitch for voice recognition, a target voice generator produces a target voice signal by changing the incoming command voice Svd on the basis of a predetermined degree. A probability calculator calculates a probability indicating a degree of coincidence among the target voice signal and a plurality of words in sample data. A voice pitch changer repeatedly changes the target voice signal in voice pitch until a maximum probability becomes a predetermined probability or greater.

Abstract: In a voice pitch normalization device equipped in a voice recognition device VRAp for recognizing an incoming command voice Sva uttered by any speaker, and used to normalize the incoming command voice to be in an optimal pitch for voice recognition, a target voice generator produces a target voice signal by changing the incoming command voice Svd on the basis of a predetermined degree. A probability calculator calculates a probability indicating a degree of coincidence among the target voice signal and a plurality of words in sample data. A voice pitch changer repeatedly changes the target voice signal in voice pitch until a maximum probability becomes a predetermined probability or greater.

Abstract: The present invention relates to a television receiver for teletext for receiving a composite video signal having text information multiplex on a television video signal, and more particularly to a television receiver for teletext capable of displaying the television video signal and teletext screen simultaneously on the picture screen by superimposing or dividing the screen, and according to this television receiver for teletext, which comprises preprocessing means for issuing various preprocessing correction signals on the basis of the teletext signal extracted by the teletext signal receiving means, the preprocessing correction signal issued by the preprocessing means, and the teletext signal received by the teletext signal receiving means are combined and displayed on the picture screen, and thereby the boundary of the television video signal and teletext signal is clearer, so that the text of thetelet ext signal is easier to read.

Abstract: Speech issued by a speaker is collected by a microphone 1, and applied to a signal delay unit 3 and a sound level estimator 4 through an A/D converter 2. The sound level estimator 4 calculates a sound level estimation value based on the applied digital sound signal. The signal delay unit 3 applies the digital sound signal delayed by a predetermined sound level rising time period to a sound level adjuster 5. The sound level adjuster 5 adjusts the sound level of the digital sound signal based on the sound level estimation value, and applies the adjusted sound level output to the speech recognition unit 6. The speech recognition unit 6 performs speech recognition in response to the applied adjusted sound level output.