IN-BODY CONDUCTION ORDINARY VOICE CONVERSION LEARNING DEVICE, IN-BODY CONDUCTION ORDINARY VOICE CONVERSION DEVICE, MOBILE PHONE, IN-BODY CONDUCTION ORDINARY VOICE CONVERSION LEARNING METHOD AND IN-BODY CONDUCTION ORDINARY VOICE CONVERSION METHOD

• Main Author: FUJIMAKI SAKAE
• Format: Patent
• Language: English
• Published: 20.09.2007
• Subjects: ACOUSTICS; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; MUSICAL INSTRUMENTS; PHYSICS; PUBLIC ADDRESS SYSTEMS; SPEECH ANALYSIS OR SYNTHESIS; SPEECH OR AUDIO CODING OR DECODING; SPEECH OR VOICE PROCESSING; SPEECH RECOGNITION; TELEPHONIC COMMUNICATION

PROBLEM TO BE SOLVED: To provide an in-body conduction ordinary voice conversion learning device, an in-body conduction ordinary voice conversion device, a mobile phone, an in-body conduction ordinary voice conversion learning method, and an in-body conduction ordinary voice conversion method, capable of improving voice quality of in-body conduction ordinary voice. SOLUTION: A linear prediction analysis is performed on the in-body conduction ordinary voice which conducts through in-body soft tissue, which is taken from a skin surface on sternocleidal papillary muscle directly under mastoid bones of a skull under ear lobes. Moreover, the linear prediction analysis is performed on air conduction sound. Based on the analysis results, a mixture normal distribution model is learned by a GMM (Gaussian Mixture Model) learning means 13, and stored in a GMM storing memory 14. The in-body conduction ordinary voice is converted into quasi air conduction sound by using the learning results stored in the GMM storing memory 14. With this configuration, voice communication is comfortably performed with the voice quality close to the air conduction sound even in very noisy environment. COPYRIGHT: (C)2007,JPO&INPIT