NDLI: IIR QMF-bank design for speech and audio subband coding

Content Provider	IEEE Xplore Digital Library
Author	Lollmann, H.W. Hildenbrand, M. Geiser, B. Vary, P.
Copyright Year	2009
Description	Author affiliation: Institute of Communication Systems and Data Processing (IND), RWTH Aachen University, 52056, Germany (Lollmann, H.W.; Hildenbrand, M.; Geiser, B.; Vary, P.)
Abstract	A new speech and audio codec has been submitted recently to ITU-T by a consortium of Huawei and ETRI as candidate proposal for the super-wideband and stereo extensions of ITU-T Rec. G.729.1 and G.718. This hierarchical codec with bit rates from 8–64 kbit/s relies on a subband splitting by means of a quadrature-mirror filter-bank (QMF-bank). For this, an allpass-based QMF-bank is used whose design and implementation is presented in this contribution. This IIR filter-bank allows to achieve a significantly lower signal delay in comparison to the traditional FIR QMF-bank solution without a compromise for the speech and audio quality.
Starting Page	269
Ending Page	272
File Size	243155
Page Count	4
File Format	PDF
ISBN	9781424436781
ISSN	19311168
DOI	10.1109/ASPAA.2009.5346512
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech coding Finite impulse response filter IIR filters Delay Proposals Speech codecs Bit rate Decoding Audio coding Speech processing ITU-T QMF-banks IIR filter-banks allpass filters speech and audio coding
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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