Title of Invention	APPARATUS FOR CALCULATING BANDWIDTH EXTENSION DATA OF AN AUDIO SIGNAL IN A BANDWIDTH EXTENSION SYSTEM
Abstract	An apparatus for calculating bandwidth extension data of an audio signal in a bandwidth extension system, in which a first spectral band is encoded with a first number of bits and a second spectral band different from the first spectral band is encoded with a second number of bits, the second number of bits being smaller than the first number of bits, has a controllable bandwidth extension parameter calculator (10) for calculating bandwidth extension parameters for the second frequency band in a frame-wise manner for a sequence of frames of the audio signal. Each frame has a controllable start time instant. The apparatus additionally comprises a spectral tilt detector (12) for detecting a spectral tilt in a time portion of the audio signal and for signaling in start time instant for the individual frames of the audio signal depending on spectral tilt.

Title of Invention

APPARATUS FOR CALCULATING BANDWIDTH EXTENSION DATA OF AN AUDIO SIGNAL IN A BANDWIDTH EXTENSION SYSTEM

Abstract

An apparatus for calculating bandwidth extension data of an audio signal in a bandwidth extension system, in which a first spectral band is encoded with a first number of bits and a second spectral band different from the first spectral band is encoded with a second number of bits, the second number of bits being smaller than the first number of bits, has a controllable bandwidth extension parameter calculator (10) for calculating bandwidth extension parameters for the second frequency band in a frame-wise manner for a sequence of frames of the audio signal. Each frame has a controllable start time instant. The apparatus additionally comprises a spectral tilt detector (12) for detecting a spectral tilt in a time portion of the audio signal and for signaling in start time instant for the individual frames of the audio signal depending on spectral tilt.

Full Text	An apparatus for calculating bandwidth extension data of an audio signal in a bandwidth extension system, in which a first spectral band is encoded with a first number of bits and a second spectral band different from the first spectral band is encoded with a second number of bits, the second number of bits being smaller than the first number of bits, has a controllable bandwidth extension parameter calculator (10) for calculating bandwidth extension parameters for the second frequency band in a frame-wise manner for a sequence of frames of the audio signal. Each frame has a controllable start time instant. The apparatus additionally comprises a spectral tilt detector (12) for detecting a spectral tilt in a time portion of the audio signal and for signaling in start time instant for the individual frames of the audio signal depending on spectral tilt.

Full Text

An apparatus for calculating bandwidth extension data of an
audio signal in a bandwidth extension system, in which a
first spectral band is encoded with a first number of bits
and a second spectral band different from the first spectral
band is encoded with a second number of bits, the second
number of bits being smaller than the first number of bits,
has a controllable bandwidth extension parameter calculator
(10) for calculating bandwidth extension parameters for the
second frequency band in a frame-wise manner for a sequence
of frames of the audio signal. Each frame has a controllable
start time instant. The apparatus additionally comprises a
spectral tilt detector (12) for detecting a spectral tilt in
a time portion of the audio signal and for signaling in
start time instant for the individual frames of the audio
signal depending on spectral tilt.

Documents:

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Patent Number

271458

Indian Patent Application Number

1555/KOLNP/2010

PG Journal Number

09/2016

Publication Date

26-Feb-2016

Grant Date

22-Feb-2016

Date of Filing

03-May-2010

Name of Patentee

FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

Applicant Address

HANSASTRASSE 27C, 80686 MÜNCHEN, GERMANY

Inventors:

#	Inventor's Name	Inventor's Address
1	MAX NEUENDORF	THEATERGASSE 17 90402 NURNBERG GERMANY
2	ULRICH KRAEMER	ASLSTR. 24 70378 STUTTGART GERMANY
3	FREDERIK NAGEL	WILHELMSHAVENER STRASSE 72 90425 NUERNBERG GERMANY
4	SASCHA DISCH	TURNSTRASSE 7 70763 FUERTH GERMANY
5	STEFAN WABNIK	HULTCHINER STRASSE 16A 26127 OLDENBURG GERMANY

PCT International Classification Number

G10L 21/02

PCT International Application Number

PCT/EP2009/004520

PCT International Filing date

2009-06-23

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	61/079,871	2008-07-11	U.S.A.