LOW COMPLEXITY SPECTRAL BAND REPLICATION (SBR) FILTERBANKS

• Main Authors: REZNIK YURIY, CHIVUKULA RAVI KIRAN
• Format: Patent
• Language: English
• Published: 14.10.2010
• Subjects: ACOUSTICS; BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; MUSICAL INSTRUMENTS; PHYSICS; RESONATORS; SPEECH ANALYSIS OR SYNTHESIS; SPEECH OR AUDIO CODING OR DECODING; SPEECH OR VOICE PROCESSING; SPEECH RECOGNITION

A complex analysis filterbank is implemented by obtaining an input audio signal as a plurality of N time-domain input samples. Pair-wise additions and subtractions of the time-domain input samples is performed to obtain a first and second groups of intermediate samples, each group having N/2 interme...