Title :
Methods for enhanced harmonic transposition
Author :
Villemoes, Lars ; Ekstrand, Per ; Hedelin, Per
Author_Institution :
Dolby Sweden AB, Stockholm, Sweden
Abstract :
In systems for High Frequency Reconstruction (HFR) employing harmonic transposition, there is a risk of introducing artifacts due to conflicting design goals for stationary, transient, and periodic signals. We describe a filter bank implementation of the transposer which addresses this problem by window design, frequency domain oversampling, and cross products.
Keywords :
filtering theory; frequency-domain analysis; harmonic analysis; signal reconstruction; signal sampling; enhanced harmonic transposition; filter bank implementation; frequency domain oversampling; high frequency reconstruction; periodic signal; window design; Audio coding; Filter banks; Harmonic analysis; Power harmonic filters; Time frequency analysis; Vocoders; audio coding; harmonic bandwidth extension; harmonic transposition; high frequency reconstruction; phase vocoder;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics (WASPAA), 2011 IEEE Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
978-1-4577-0692-9
Electronic_ISBN :
1931-1168
DOI :
10.1109/ASPAA.2011.6082282
