Transcoders and mixers for voice-over-IP conferencing
Date
2009
Journal Title
Journal ISSN
Volume Title
Type
Other
Publisher
Carleton University; RPX Clearinghouse LLC
Series Info
Doi
Scientific Journal Rankings
Abstract
Transcoders and mixers having reduced algorithmic delay and processing complexity. An improved mixer for signals having encoded speech parameters wherein the parameters obtained through decoding are used by a parameter estimator to improve the encoding by providing a parameter estimate for the mixed signal. In the case of pitch parameters, the mixer uses the principle of strong-pitch-domination. The mixing of wideband signals is simplified by performing mixing of individual lower and upper sub-bands. A transcoder and a mixer that converts a wideband signal into a narrowband signal relies upon high frequency suppression. A transcoder and a mixer that converts a narrowband signal into a wideband signal relies upon filter combination.
Description
MSA Google Scholar
Keywords
University of Transcoders and mixers
Citation
US20080046252A1 * 2006-08-15 2008-02-21 Broadcom Corporation Time-Warping of Decoded Audio Signal After Packet Loss US20090232084A1 * 2005-09-28 2009-09-17 Xiaodong Li Method and system for multi-carrier packet communication with reduced overhead US8634376B2 2005-09-28 2014-01-21 Neocific, Inc. Method and system for multi-carrier packet communication with reduced overhead FR3003683A1 * 2013-03-25 2014-09-26 France Telecom Optimized mixing of audio stream codes according to subband coding CN107079272A * 2015-09-15 2017-08-18 华为技术有限公司 A kind of method and the network equipment for setting up radio bearer Family To Family Citations KR101826331B1 * 2010-09-15 2018-03-22 삼성전자주식회사 Apparatus and method for encoding and decoding for high frequency bandwidth extension ES2564504T3 * 2010-12-29 2016-03-23 Samsung Electronics Co., Ltd Encoding apparatus and decoding apparatus with bandwidth extension US8868432B2 * 2010-10-15 2014-10-21 Motorola Mobility Llc Audio signal bandwidth extension in CELP-based speech coder