RECEIVER AND WAVEFORM PROCESSING METHOD

• Main Author: AKIYAMA SHIZUO
• Format: Patent
• Language: English
• Published: 28.01.2010
• Subjects: ACOUSTICS; ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MUSICAL INSTRUMENTS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SPEECH ANALYSIS OR SYNTHESIS; SPEECH OR AUDIO CODING OR DECODING; SPEECH OR VOICE PROCESSING; SPEECH RECOGNITION; TESTING

PROBLEM TO BE SOLVED: To provide a receiver and a waveform processing method capable of suppressing the deterioration of signal quality after coupling and performing the coupling of signal waveform in a more natural state even when there is no separated signal waveform of coupling candidate, when successively coupling separated signal waveforms after blind separation processing and extracting the coupled signal waveforms as an original signal. SOLUTION: The separated signal waveforms obtained by the blind separation processing of a signal in which a plurality of original signals are mixed are successively coupled while using a designated signal direction as a key. Therein, when there is one wave that satisfies such separated signal waveforms that the designated signal direction is set to be the incoming direction, the separated signal waveforms are successively coupled and, when there are a plurality of waves or no wave that satisfy such separated signal waveforms that the designated signal direction is set to be the incoming direction, the separated signal waveforms are coupled to a destination of coupling that has the most significant correlation between the separated signal waveforms up to the just preceding one and the destination of coupling. Further, when there is no accordance of signal direction and no significant correlation, it is decided that the separation signal waveforms to be coupled are not obtained and the processed signal waveforms obtained by waveform extracting processing based on direction designation using the designated signal direction as a target are interpolated and coupled concerning the designated signal direction. COPYRIGHT: (C)2010,JPO&INPIT