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US 11,694,698 B2Granted
Advanced packet-based sample audio concealment
AssigneeCypress Semiconductor Corporation
InventorRobert Zopf
Life of this patent
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Abstract
In a reliable multi-cast, a concealment scheme may be applied to recover or conceal lost or otherwise corrupted packets of audio information for one channel based on the audio information of other channels in the reliable multi-cast. The concealment scheme may employ correction factors for channels derived from the channel relationships.
Claims20
A speaker comprising:
- a receiver circuit configured to receive a plurality of packets containing a plurality of frames of audio information for a first channel and a second channel, the first channel being associated with the speaker, wherein each of the frames corresponds to a time for playing the audio information for a corresponding channel;
- and
- a processor circuit configured to:
- determine a correlation factor for the first channel and the second channel based on the plurality of frames for the first channel and the second channel;
- determine if the audio information comprises a lost packet for the first channel, the lost packet containing a lost frame for the first channel having a corresponding time;
- and
- apply, if the correlation factor is above a threshold, a concealment scheme to conceal the lost frame using one of the frames for the second channel having a corresponding time that is different from the corresponding time of the lost frame for the first channel.
4 more elements
An audio device, comprising:
- a wireless receiver circuit configured to receive a plurality of packets containing a plurality of frames of audio information for a first audio channel and a second audio channel, wherein the first audio channel is associated with the audio device, and wherein each of the frames corresponds to a time for playing the audio information for a corresponding audio channel;
- and
- a processing device configured to:
- determine a correlation factor for the first audio channel and the second audio channel based on the plurality of frames for the first audio channel and the second audio channel;
- determine if the audio information comprises a lost packet for the first audio channel, wherein the lost packet contains a lost frame for the first channel having a corresponding time;
- apply, if the correlation factor is above a threshold, a concealment scheme to conceal the lost frame using one of the frames for the second channel having a corresponding time that is different from the corresponding time of the lost frame for the first channel;
- and
- generate a replacement packet for the lost packet by the concealment scheme;
- and
- a speaker circuit configured to play sound based on the replacement packet.
7 more elements
Dependencies are inferred from the claim text.