Concept for encoding of information

US11062720B2 · kind B2 · utility

Assignee

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

Inventors

• Tom Baeckstroem · Nuremberg, DE
• Christian Fischer Pedersen · Aarhus, DK
• Johannes Fischer · Eggolsheim, DE
• Matthias Huettenberger · Erlangen, DE
• Alfonso Pino · Erlangen, DE

Key dates

• Filing date: Jul 15, 2019
• Grant date: Jul 13, 2021
• Expiry date: Jan 9, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L2019/0016
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An information encoder for encoding an information signal includes: a converter for converting the linear prediction coefficients of the predictive polynomial A(z) to frequency values f1 . . . fn of a spectral frequency representation of the predictive polynomial A(z), wherein the converter is configured to determine the frequency values f1 . . . fn by analyzing a pair of polynomials P(z) and Q(z) being defined as P(z)=A(z)+z−m−lA(z−1) andQ(z)=A(z)−z−m−lA(z−1), wherein m is an order of the predictive polynomial A(z) and l is greater or equal to zero, wherein the converter is configured to obtain the frequency values by establishing a strictly real spectrum derived from P(z) and a strictly imaginary spectrum from Q(z) and by identifying zeros of the strictly real spectrum derived from P(z) and the strictly imaginary spectrum derived from Q(z).