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US 2016/0240201 A1Published application
Method and a Decoder for Attenuation of Signal Regions Reconstructed with Low Accuracy
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSebastian Näslund, Volodya Grancharov, Erik Norvell
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Abstract
The embodiments of the present invention improves conventional attenuation schemes by replacing constant attenuation with an adaptive attenuation scheme that allows more aggressive attenuation, without introducing audible change of signal frequency characteristics.
Claims20
A method for a decoder for attenuating an audio signal, the method comprising:
- identifying spectral regions of the audio signal to form a continuous spectral region, wherein the spectral regions are spectral regions of the audio signal to be attenuated and the spectral regions are coded with either a low number of bits or with no bits assigned;
- determining a width of the continuous spectral region;
- and
- attenuating the audio signal by applying an attenuation of the continuous spectral region adaptive to the width such that an increased width decreases the attenuation of the continuous spectral region.
1 more element
A decoder for attenuating an audio signal, the decoder comprising a processor circuit configured to:
- identify spectral regions of the audio signal to form a continuous spectral region, wherein the spectral regions are spectral regions of the audio signal to be attenuated and the spectral regions are coded with either a low number of bits or with no bits assigned;
- determine a width of the continuous spectral region;
- and
- attenuate the audio signal by applying an attenuation of the continuous spectral region adaptive to the width such that an increased width decreases the attenuation of the continuous spectral region.
1 more element
A mobile terminal comprising:
- an attenuation controller of a decoder for attenuating an audio signal, wherein the attenuation controller comprises a processor circuit configured to:
- identify spectral regions of the audio signal to form a continuous spectral region, wherein the spectral regions are spectral regions of the audio signal to be attenuated and the spectral regions are coded with either a low number of bits or with no bits assigned;
- determine a width of the continuous spectral region;
- and
- attenuate the audio signal by applying an attenuation of the continuous spectral region adaptive to the width such that an increased width decreases the attenuation of the continuous spectral region.
2 more elements
A network node comprising:
- an attenuation controller of a decoder for attenuating an audio signal, wherein the attenuation controller comprises a processor circuit configured to:
- identify spectral regions of the audio signal to form a continuous spectral region, wherein the spectral regions are spectral regions of the audio signal to be attenuated and the spectral regions are coded with either a low number of bits or with no bits assigned;
- determine a width of the continuous spectral region;
- and
- attenuate the audio signal by applying an attenuation of the continuous spectral region adaptive to the width such that an increased width decreases the attenuation of the continuous spectral region.
2 more elements
A method for a decoder for attenuating an audio signal, the method comprising:
- identifying spectral regions of the audio signal to form a continuous spectral region, wherein the spectral regions are spectral regions of the audio signal to be attenuated and the spectral regions are coded with no bits assigned;
- determining a width of the continuous spectral region;
- and
- attenuating the audio signal by applying an attenuation of the continuous spectral region adaptive to the width such that an increased width decreases the attenuation of the continuous spectral region.
1 more element
A decoder for attenuating an audio signal, the attenuation controller comprising a processor circuit configured to:
- identify spectral regions of the audio signal to form a continuous spectral region, wherein the spectral regions are spectral regions of the audio signal to be attenuated and the spectral regions are coded with no bits assigned;
- determine a width of the continuous spectral region;
- and
- attenuate the audio signal by applying an attenuation of the continuous spectral region adaptive to the width such that an increased width decreases the attenuation of the continuous spectral region.
1 more element
Dependencies are inferred from the claim text.