Patent · US Active

Method and arrangements for audio signal encoding

US8612216B2 · kind B2 · utility

1Cited by

1References

17Claims

0Family size

Assignee

Siemens Enterprise Communications GmbH & Co. KG · DE

Inventors

Martin Gärtner · Worms, DE
Bernd Geiser · Aachen, DE
Peter Jax · Hannover, DE
Stefan Schandl · Wien, AT
Herve Taddei · Voorburg, NL
Peter Vary · Herzogenaurach, DE

Key dates

Filing date	Jan 31, 2006
Grant date	Dec 17, 2013
Priority date	—
Expiry date	Apr 19, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG10L21/038
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

To form an audio signal, frequency components of the audio signal which are allotted to a first subband are formed by means of a subband decoder using supplied fundamental period values which respectively indicate a fundamental period for the audio signal. Frequency components of the audio signal which are allotted to a second subband are formed by exciting an audio synthesis filter using an excitation signal which is specific to the second subband. To produce this excitation signal, an excitation signal generator derives a fundamental period parameter from the fundamental period values. The fundamental period parameter is used by the excitation signal generator to form pulses with a pulse shape which is dependent on the fundamental period parameter at an interval of time which is determined by the fundamental period parameter and to mix them with a noise signal.

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