Patent №
US 5,459,815
Granted
1995-10-17
Filed 1993
Owner
ATR AUDITORY AND VISUAL PERCEPTION RESEARCH LABORATORIES
Lab
—
AI components
4
ml · nlp · speech · hardware
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
08079425
A speech recognition method in which input speech signals are converted to digital signals and then time sequentially converted to cepstrum coefficients or logarithmic spectra. Dynamic spectrum time sequence is obtained by time frequency filtering of cepstrum coefficients, or masked spectrum time sequence is obtained by time frequency masking of the logarithmic vector time sequence. Based on the dynamic cepstrum time sequence or masked spectrum time sequence obtained in this manner, speech is recognized.
AI classification
Ownership
ATR AUDITORY AND VISUAL PERCEPTION RESEARCH LABORATORIES
assignment · 66010342
Assignors
AIKAWA, KIYOAKI, KAWAHARA, HIDEKI, TOHKURA, YOH'ICHI
On an employer assignment, the assignors are typically the inventors.