SPEECH BANDWIDTH EXTENSION BASED ON IN-BAND TRANSMISSION OF HIGHER FREQUENCIES

被引：0

作者：

Geiser, Bernd ^{[1
]}

Vary, Peter ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Commun Syst & Data Proc, Aachen, Germany

来源：

2013 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2013年

关键词：

wideband speech transmission; speech bandwidth extension; pitch scaling; NETWORKS;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A new method for wideband speech transmission is proposed which is fully backwards compatible with narrowband telephone systems. For this purpose, a pitch-scaled version of the higher speech frequencies (4 - 6.4 kHz) is inserted into the previously "unused" 3.4 - 4 kHz frequency range of standard telephone speech. This operation is reverted at the decoder side. A consistently good wideband speech quality can be achieved, even after transmission over common codecs and codec tandems. The quality impact on the narrowband part of the signal is insignificant.

引用

页码：7507 / 7511

页数：5

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