Patent · US Active

Apparatus and method for extracting a test signal section from an audio signal

US7680056B2 · kind B2 · utility

5Cited by

2References

19Claims

0Family size

Assignee

Opticom Dipl.-Ing M. Keyhl GmbH · DE

Inventors

Michael Keyhl · Heroldsbach, DE
Christian Schmidmer · Nuremberg, DE
Roland Bitto · Nuremberg, DE

Key dates

Filing date	Nov 23, 2005
Grant date	Mar 16, 2010
Priority date	—
Expiry date	Oct 24, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04M2203/056
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

For extracting signal test sections conforming to an auditory test from an audio signal, in particular for non-intrusive tests for a quality assessment of a transmission system, first of all a temporal structure of the audio signal is parsed in order to differentiate an information-carrying section of the audio signal from a preceding non-information-carrying section of the audio signal or a subsequent non-information-carrying section of the audio signal. Hereupon, a test signal section is generated based on the information-carrying section of the audio signal. Thus, test signal sections conforming to an auditory test are obtained, on the one hand determining the comparability with other auditory tests and, on the other hand, reducing a too inaccurate assessment of the transmission system based on system-immanent artefacts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.