Patent · US Active

Apparatus and method for post-processing an audio signal using prediction based shaping

US11562756B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

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

Inventors

Sascha Disch · Bad Mergentheim, DE
Christian Uhle · Nuremberg, DE
Jürgen Herre · Buckenhof, DE
Peter Prokein · Erlangen, DE
Patrick Gampp · Erlangen, DE
Antonios Karampourniotis · Nuremberg, DE
Julia Havenstein · Nuremberg, DE
Oliver Hellmuth · Erlangen, DE
Daniel Richter · Radebeul, DE

Key dates

Filing date	Sep 17, 2019
Grant date	Jan 24, 2023
Priority date	—
Expiry date	Jan 10, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/26
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

What is described is an apparatus for post-processing an audio signal, having: a time-spectrum-converter for converting the audio signal into a spectral representation having a sequence of spectral frames; a prediction analyzer for calculating prediction filter data for a prediction over frequency within a spectral frame; a shaping filter controlled by the prediction filter data for shaping the spectral frame to enhance a transient portion within the spectral frame; and a spectrum-time-converter for converting a sequence of spectral frames having a shaped spectral frame into a time domain.

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