18522732. AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AUDIO STREAM AND A COMPUTER PROGRAM simplified abstract (Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.)

AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AUDIO STREAM AND A COMPUTER PROGRAM

Organization Name

Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Inventor(s)

Nikolaus Rettelbach of Nuernberg (DE)

Bernhard Grill of Lauf (DE)

Guillaume Fuchs of Nuernberg (DE)

Stefan Geyersberger of Wuerzburg (DE)

Markus Multrus of Nuernberg (DE)

Harald Popp of Tuchenbach (DE)

Juergen Herre of Buckenhof (DE)

Stefan Wabnik of Ilmenau (DE)

Gerald Schuller of Erfurt (DE)

Jens Hirschfeld of Heringen (DE)

AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AUDIO STREAM AND A COMPUTER PROGRAM - A simplified explanation of the abstract

This abstract first appeared for US patent application 18522732 titled 'AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AUDIO STREAM AND A COMPUTER PROGRAM

Simplified Explanation

The abstract describes an encoder that provides an audio stream based on a transform-domain representation of an input audio signal, including multi-band quantization error calculation and band gain information.

• Encoder provides audio stream based on transform-domain representation of input audio signal
• Quantization error calculator determines multi-band quantization error over frequency bands with band gain information
• Audio stream includes information on audio content of frequency bands and multi-band quantization error

Potential Applications

This technology can be applied in various audio encoding and streaming applications, such as online music streaming services, audio broadcasting, and digital audio processing systems.

Problems Solved

- Efficient encoding of audio signals with reduced quantization errors - Improved audio quality preservation during encoding and streaming processes

Benefits

- Enhanced audio streaming quality - More accurate representation of audio content - Optimal bandwidth utilization for streaming services

Potential Commercial Applications

- Online music streaming platforms - Audio broadcasting services - Digital audio processing software development

Possible Prior Art

One potential prior art in this field could be the use of multi-band quantization techniques in audio encoding and streaming to improve audio quality and reduce data size.

How does the encoder handle varying input audio signal characteristics?

The encoder may use adaptive algorithms to adjust quantization error calculation and band gain information based on the input audio signal's characteristics.

What is the impact of the encoder on overall audio streaming performance?

The encoder may affect factors such as latency, data compression ratio, and computational complexity in audio streaming applications.

Original Abstract Submitted

An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error.