Audio encoder for encoding a multi-channel signal and audio decoder for decoding an encrypted audio signal
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV
- Filing Date
- 2016-03-07
- Publication Date
- 2026-07-08
AI Technical Summary
Existing audio codecs have fixed multichannel coding techniques that are not adaptable to the signal characteristics, leading to inefficiencies in encoding and decoding processes, particularly for different types of audio content such as speech and music.
A fully switchable perceptual codec that combines joint multichannel coding with parametric spatial audio coding, allowing dynamic switching between different multichannel coding techniques based on the core coder's choice, using a controller to analyze frame characteristics and select between linear prediction domain and frequency domain encoding for optimal adaptation.
Enables seamless and artifact-free switching between coding techniques, improving encoding efficiency and quality by matching multichannel coding to the specific characteristics of speech or music signals, enhancing reproduction quality.