Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Patent
1997-09-26
2000-02-29
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
704244, G10L 708
Patent
active
060321156
ABSTRACT:
In sound recognition apparatus of the present invention, user's utterance or a sound provided by an output section using previously stored sound waveforms is simultaneously inputted through a basic microphone of known frequency characteristics and an input microphone of unknown frequency characteristics. An analysis section respectively analyzes the frequency of the input speech through the basic microphone and the input microphone. A frequency characteristics calculation section calculates first difference data between the frequencies of the input speech of the basic microphone and the input microphone, and calculates frequency characteristics of the input microphone according to the first difference data and the frequency characteristics of the basic microphone. A frequency characteristics correction section calculates second difference data between the frequency characteristics of the input microphone and known frequency characteristics of a dictionary data microphone, and corrects input speech to be recognized through the input microphone as speech data of the frequency characteristics of the dictionary data microphone according to the second difference data. A recognition section recognizes corrected speech data by referring to a recognition dictionary storing data previously created through the dictionary data microphone.
REFERENCES:
patent: 4631749 (1986-12-01), Rapaich
patent: 4847885 (1989-07-01), Vittorelli
patent: 5402669 (1995-04-01), Pla et al.
patent: 5459792 (1995-10-01), Reichel et al.
patent: 5528731 (1996-06-01), Sachs et al.
patent: 5950157 (1999-09-01), Heck et al.
A. Acero and R. M. Stern, "Enviromental Robustness in Automatic Speech Recognition", Acoustics, Speech, and Signal Processing, 1990, ICASSP-90., 1990 International Conference on, Apr. 3-6, 1990, vol. 2, pp. 849-852.
J. N. Holmes, "Speech Synthesis and Recognition," Chapman and Hall (London, 1988), pp. 103-128.
Richard M. Stern nd Alejandro Acero, "Acoustical Pre-Processing for Robust Speech Recognition," Proc. DARPA Speech and Natural Language Workshop, Oct. 1989, pp. 311-318.
Isaka Takehiko
Kanazawa Hiroshi
Nagata Yoshifumi
Tsuboi Hiroyuki
Hudspeth David R.
Kabushiki Kaisha Toshiba
Storm Donald L.
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