| 摘要 |
PURPOSE:To establish the effective constitution method and learning method of a neural network, regarding the spotting system of keyword sound having a wide versatility. CONSTITUTION:When sound is inputted in a sound input part 5, the feature analysis of sound such as a FFT(fast Fourier transform) is performed in a feature extraction part 1. As the analysis is a keyword spotting, the segment processing of sound section especially by sound wave power is not performed. In a learning mode 6, a discrimination learning is performed for keywords and sound other than keywords (including noise) by using a neural network in a neural net learning part 2. In a recognition mode 7, a spotting is performed for keywords by using the learned neural network in a neural network recognition part 3. The spotting result is outputted in a keyword detection part 4. |
