Method, apparatus, and computer program for performing a modified discrete cosine transform

The invention relates to performing an MDCT of a digital input signal of length N, wherein by generating a specific intermediate signal of length N/2 the MDCT can be performed by a number of only N /4 multiplications of data values of the intermediate signal with cosine values.

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Bibliographische Detailangaben
1. Verfasser: BAUM, PETER G
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The invention relates to performing an MDCT of a digital input signal of length N, wherein by generating a specific intermediate signal of length N/2 the MDCT can be performed by a number of only N /4 multiplications of data values of the intermediate signal with cosine values.