Patent · US Active

Concept for encoding an audio signal and decoding an audio signal using speech related spectral shaping information

US10909997B2 · kind B2 · utility

4Cited by

19References

14Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Guillaume Fuchs · Erlangen, DE
Markus Multrus · Nuremberg, DE
Emmanuel Ravelli · Erlangen, DE
Markus Schnell · Nuremberg, DE

Key dates

Filing date	Jul 8, 2019
Grant date	Feb 2, 2021
Priority date	—
Expiry date	Jul 8, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG10L2019/0016
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

According to an aspect of the present invention an encoder for encoding an audio signal has an analyzer configured for deriving prediction coefficients and a residual signal from a frame of the audio signal. The encoder has a formant information calculator configured for calculating a speech related spectral shaping information from the prediction coefficients, a gain parameter calculator configured for calculating a gain parameter from an unvoiced residual signal and the spectral shaping information and a bitstream former configured for forming an output signal based on an information related to a voiced signal frame, the gain parameter or a quantized gain parameter and the prediction coefficients.

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