Transmission system

US4821260A · kind A · utility

Assignee

• Deutsche Thomson-Brandt GmbH · DE

Inventors

• Otto Klank · Burgdorf, DE
• Ernst Schroder · Hannover, DE
• Walter Voessing · Hannover, DE

Key dates

• Filing date: Dec 16, 1987
• Grant date: Apr 11, 1989
• Expiry date: Dec 16, 2007

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/66
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A system for transmitting and receiving digitalized audio signals, particularly via satellites, wherein data sequences are arranged in timely succession within frames, wherein before transmission, the digitalized audio signal is converted to a digital signal representing the momentary frequency spectrum and, during subsequent coding of the digital audio signal to be transmitted, portions of this transformed signal are given different weights on the basis of psychoacoustic laws with respect to the accuracy of their representation.