Training data extension apparatus, training data extension method, and program
US-11886996-B2 · Jan 30, 2024 · US
Audio signal of an FM stereo radio receiver by using parametric stereo
US8929558B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8929558-B2 |
| Application number | US-201013394799-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 7, 2010 |
| Priority date | Sep 10, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
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The invention relates to an apparatus for improving a stereo audio signal of an FM stereo radio receiver. The apparatus comprises a parametric stereo (PS) parameter estimation stage. The parameter estimation stage is configured to determine one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the apparatus comprises an upmix stage. The upmix stage is configured to generate the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation in a downmix stage. The PS parameter estimation stage may be part of a PS encoder. The upmix stage may be part of a PS decoder.
First claim
Opening claim text (preview).
The invention claimed is: 1. An apparatus for improving a left/right or mid/side audio signal output by an FM stereo radio receiver, the apparatus comprising: an input stage configured to receive the left/right or mid/side audio signal from the FM stereo radio receiver; a downmix stage, the downmix stage configured to generate a first audio signal based on the left/right or mid/side audio signal by a downmix operation; a parametric stereo parameter estimation stage, the parame…
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Electricity · mapped topic
- H04S1/007Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8929558B2 cover?
- The invention relates to an apparatus for improving a stereo audio signal of an FM stereo radio receiver. The apparatus comprises a parametric stereo (PS) parameter estimation stage. The parameter estimation stage is configured to determine one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS paramet…
- Who is the assignee on this patent?
- Engdegard Jonas, Purnhagen Heiko, Roeden Karl Jonas, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04S1/007. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).