Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Michael Mellar

Markus Multrus

Bernhard Grill

Ralf Geiger

Markus Schnell

Bernd Edler

Gerald Schuller

Manfred Lutzky

Marc Gayer

Markus Lohwasser

Markus Schmidt

Manfred Lutzki

An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.

Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples

An embodiment of an apparatus for generating audio subband values in audio subband channels has an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function having a sequence of window coefficients to obtain windowed samples. The analysis window function has a first group of window coefficients and a second group of window coefficients. The first group of window coefficients is used for windowing later time-domain samples and the second group of window coefficients is used for windowing an earlier time-domain samples. The apparatus further has a calculator for calculating the audio subband values using the windowed samples.

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Ludwigshafen, Germany

Michael Mellar