Output details
15 - General Engineering
University of Huddersfield
Title or brief description
A method and an apparatus for processing an audio signal
Type
F - Patent/published patent application
Patent registration number
WO 2009/078681
Year
2009
URL
-
Number of additional authors
4
Additional information
This PCT patent describes ‘Partial Spectral Data Duplication’ (PSDD), which is a new method for extending high frequency spectrum in audio coding. This was invented principally by Hyunkook Lee. Conventional bandwidth extension methods generate high band data above a certain threshold from the lower band data, based on the correlation between the low and high bands. The present invention obtains the spectral data of target frequency bands from adjacent bands based on the analysis of temporal and spectral characteristics of the original signal. This method outperforms existing methods for audio signals that contain mixed characteristics of audio and speech.
Interdisciplinary
-
Cross-referral requested
-
Research group
None
Proposed double-weighted
No
Double-weighted statement
-
Reserve for a double-weighted output
No
Non-English
No
English abstract
-
