20240046942. RESAMPLING OUTPUT SIGNALS OF QMF BASED AUDIO CODECS simplified abstract (Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.)

RESAMPLING OUTPUT SIGNALS OF QMF BASED AUDIO CODECS

Organization Name

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

Inventor(s)

Markus Lohwasser of Hersbruck (DE)

Manuel Jander of Erlangen (DE)

Max Neuendorf of Nuernberg (DE)

Ralf Geiger of Erlangen (DE)

Markus Schnell of Nuernberg (DE)

Matthias Hildenbrand of Erlangen (DE)

Tobias Chalupka of Heroldsberg (DE)

RESAMPLING OUTPUT SIGNALS OF QMF BASED AUDIO CODECS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240046942 titled 'RESAMPLING OUTPUT SIGNALS OF QMF BASED AUDIO CODECS

Simplified Explanation

The patent application describes an apparatus for processing an audio signal. The apparatus includes a configurable first audio signal processor that can process the audio signal based on different configuration settings to obtain a processed audio signal. The apparatus is designed in such a way that different configuration settings result in different sampling rates of the processed audio signal. Additionally, the apparatus includes an analysis filter bank with a certain number of analysis filter bank channels, a synthesis filter bank with a different number of synthesis filter bank channels, a second audio processor for receiving and processing an audio signal with a predetermined sampling rate, and a controller for controlling the number of analysis filter bank channels or synthesis filter bank channels based on the configuration setting.

• The apparatus can process audio signals with different configuration settings, resulting in different sampling rates of the processed audio signal.
• It includes a configurable first audio signal processor that can be adjusted to different settings for processing the audio signal.
• The apparatus has an analysis filter bank with a certain number of channels and a synthesis filter bank with a different number of channels.
• A second audio processor is included to receive and process an audio signal with a predetermined sampling rate.
• The controller is responsible for controlling the number of analysis filter bank channels or synthesis filter bank channels based on the configuration setting.

Potential applications of this technology:

• Audio signal processing in various devices such as smartphones, tablets, and audio systems.
• Music production and recording studios.
• Communication systems for voice processing and enhancement.
• Audio streaming and broadcasting platforms.

Problems solved by this technology:

• The apparatus allows for flexible processing of audio signals by providing different configuration settings.
• It enables the processing of audio signals with different sampling rates.
• The analysis and synthesis filter banks provide efficient and accurate audio signal processing.

Benefits of this technology:

• Improved audio signal processing capabilities.
• Enhanced flexibility in adjusting the configuration settings for different audio processing requirements.
• Efficient utilization of analysis and synthesis filter banks.
• Improved audio quality and fidelity in various applications.

Original Abstract Submitted

an apparatus for processing an audio signal includes a configurable first audio signal processor for processing the audio signal in accordance with different configuration settings to obtain a processed audio signal, wherein the apparatus is adapted so that different configuration settings result in different sampling rates of the processed audio signal. the apparatus furthermore includes n analysis filter bank having a first number of analysis filter bank channels, a synthesis filter bank having a second number of synthesis filter bank channels, a second audio processor being adapted to receive and process an audio signal having a predetermined sampling rate, and a controller for controlling the first number of analysis filter bank channels or the second number of synthesis filter bank channels in accordance with a configuration setting.