Artificial Bandwidth Extension of Speech Signals

Authors:

Jax, P.

Book Title:

Proceedings of German Annual Conference on Acoustics (DAGA)

Address:

Aachen, Germany

Date:

Mar. 2003

Note:

Invited Talk

Language:

English

Abstract

In today's digital telephone networks the acoustic bandwidth of speech signals is still limited to the range of about 300 Hz to 3.4 kHz due to the evolution from analogue transmission systems. This is the reason for the limited quality and intelligibility of "telephone speech". The objective of this contribution is the artificial bandwidth extension of speech signals. The aim is to improve the speech quality at the receiving point without transmitting any additional side information about the original wideband speech signal across the telephone link.

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