摘要:
A microphone-array-based speech recognition system using a blind source separation (BBS) and a target speech extraction method in the system are provided. The speech recognition system performs an independent component analysis (ICA) to separate mixed signals input through a plurality of microphone into sound-source signals, extracts one target speech spoken for speech recognition from the separated sound-source signals by using a Gaussian mixture model (GMM) or a hidden Markov Model (HMM), and automatically recognizes a desired speech from the extracted target speech. Accordingly, it is possible to obtain a high speech recognition rate even in a noise environment.
摘要:
Disclosed is a method of generating a search network for voice recognition, the method including: generating a pronunciation transduction weighted finite state transducer by implementing a pronunciation transduction rule representing a phenomenon of pronunciation transduction between recognition units as a weighted finite state transducer; and composing the pronunciation transduction weighted finite state transducer and one or more weighted finite state transducers.
摘要:
The present invention allows a man to recognize a location of a sound source in a three-dimensional space using two ears and applies a method of separating a sound source in a certain orientation to improve the performance of an application technology using a speech in a noisy environment. The present invention acquires a speech signal using two sensors and determines an orientation angle of a sound source in a zero-crossing point step with respect to a frequency separated signal with a band pass filter bank. An object of the present invention is to obtain excellent sound source orientation detection and division performance which is difficult to be obtained in an existing crossing correlation method calculated in units of time frames in a noisy environment with a plurality of sound sources.
摘要:
A silicon nanowire including metal nanoclusters formed on a surface thereof at a high density. The metal nanocluster improves electrical and optical characteristics of the silicon nanowire, and thus can be usefully used in various electrical devices such as a lithium battery, a solar cell, a bio sensor, a memory device, or the like.
摘要:
A silicon nanowire includes metal nanoclusters formed on a surface thereof at a high density. The metal nanoclusters improve electrical and optical characteristics of the silicon nanowire, and thus can be usefully used in various electrical devices such as a lithium battery, a solar cell, a bio sensor, a memory device, or the like.