Patent ID: 8812317
Filing Date: 2014-08-19
Classification: G10L

Abstract:
1. A signal processing apparatus comprising: a voice command recognition unit which recognizes an input voice command; a voice command recognition learning unit which learns a recognition-targeted voice command by comparing feature values of the input voice command with feature values of the recognition-targeted voice command to determine a similarity; and a controller, which controls the voice command recognition unit to recognize the input voice command based on reference data corresponding to the recognition-targeted voice command, controls the voice command recognition learning unit to learn the input voice command based on whether the voice command recognition is successful or unsuccessful, wherein if the voice command recognition is successful, performs an operation according to the successfully recognized voice command, herein if the voice command recognition is unsuccessful with regard to a first input voice command, the controller determines the first input voice command as the recognition-targeted voice command according to a user input, and next time, controls the voice command recognition unit to recognize a second input voice command based on the reference data and the first input voice command, and wherein if the voice command feature values in an unsuccessful attempt are similar to voice command feature values in a successful attempt, the voice command recognition learning unit learns the voice command feature values in the unsuccessful attempt using an Acoustic model, and if voice command feature values in the unsuccessful attempt are not similar to voice command feature values in the successful attempt, the voice command recognition learning unit adds a word having the voice command feature values in the unsuccessful attempt to a voice command recognition object using a Lexicon model.