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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 9 of 9 1 Enhancing target speech based on nonlinear soft masking using a single acoustic vector sensor Zou, Yue-Xian; Liu, Zhaoyi; Ritz, Christian H In: Faculty of Engineering and Information Sciences - Papers: Part B (2018) BASE Show details 2 Multizone Soundfield Reproduction With Privacy- and Quality-Based Speech Masking Filters Donley, Jacob; Ritz, Christian H; Kleijn, W In: Faculty of Engineering and Information Sciences - Papers: Part B (2018) BASE Show details 3 Encoding and communicating navigable speech soundfields Zheng, Xiguang; Ritz, Christian H; Xi, Jiangtao In: Faculty of Engineering and Information Sciences - Papers: Part A (2016) BASE Show details 4 An effective target speech enhancement with single acoustic vector sensor based on the speech time-frequency sparsity Zou, Yue-Xian; Wang, Yong; Wang, Peng... In: Faculty of Engineering and Information Sciences - Papers: Part A (2014) BASE Show details 5 Packet loss protection for interactive audio object rendering: A multiple description approach Zheng, Xiguang; Ritz, Christian H In: Faculty of Engineering and Information Sciences - Papers: Part A (2012) BASE Show details 6 Encoding navigable speech sources: an analysis by synthesis approach Zheng, Xiguang; Ritz, Christian H; Xi, Jiangtao In: Faculty of Informatics - Papers (Archive) (2012) BASE Show details 7 Linear predictive perceptual filtering for acoustic vector sensors: exploiting directional recordings for high quality speech enhancement Shujau, Muawiyath; Ritz, Christian H; Burnett, Ian S In: Faculty of Engineering - Papers (Archive) (2011) BASE Show details 8 A novel voicing cut-off determination for low bit-rate harmonic speech coding Bao, Changchun; Lukasiak, Jason; Ritz, Christian H. In: Faculty of Informatics - Papers (Archive) (2005) Abstract: Generally, phonetic classification for low rate speech coding is restricted to either a simple binary voiced/unvoiced classification of entire speech frames, or alternatively, a more complicated estimation of the voicing for a set of frequency bands. A good compromise between these two techniques is estimation of a single cut-off frequency that separates the spectrum into voiced (below) and unvoiced (above) regions. Many existing cut-off frequency estimation methods use a fixed periodic spectrum to model voiced harmonics. However, due to pitch jitter, voiced harmonics do not always appear at regular intervals in the spectrum. In this paper a voicing cut-off estimation approach that combines speech energy, speech auto-correlation between frames and residual harmonic matching is proposed. Objective evaluation indicates that the algorithm is accurate and reliable. Subjective results obtained by embedding the algorithm in a low rate harmonic speech coder indicate that the technique is suitable for supporting high quality low rate speech synthesis. The proposed algorithm also requires relatively low complexity and introduces only a single frame of algorithmic delay. Keyword: Bit; Coding; Cut; Determination; for; Harmonic; Low; Novel; Off; Physical Sciences and Mathematics; Rate; Speech; Voicing URL: https://ro.uow.edu.au/infopapers/1848 BASE Hide details 9 Transcoding of Narrowband to Wideband Speech Ritz, Christian H.; Harders, Nick; Hermann, Joseph... In: Faculty of Informatics - Papers (Archive) (2005) BASE Show details

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