Signal analyzing method, signal synthesizing method of...

Details Signal analyzing method, signal synthesizing method of... Signal analyzing method, signal synthesizing method of...

2004-11-12

2008-10-07

Malzahn, David H (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07433907

ABSTRACT:
Provided is a complex exponential modulation filter bank which can reduce quantity of arithmetic operation, and can realize low electric power consumption or speeding-up. This complex exponential modulation filter bank has a step of calculating a first intermediate signal from an input signal, a step of calculating a second intermediate signal from the first intermediate signal, a step of calculating a third intermediate signal from the second intermediate signal with fast Fourier transform, and a step of calculating a complex band output signal from the third intermediate signal.

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ISO/IEC 14496-3: 2001, Information technology—Coding of audio-visual objects—Part 3: Audio, ISO/IEC JTC1/SC29/WG11/N5570, Mar. 2003 (Text of ISO/IEC 14496-3:2001/FDAM1, Bandwidth Extension).

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