Abstract
FIELD: information technology. ^ SUBSTANCE: method and device for masking deletion of frames caused by deletion of frames of an encoded audio signal during transmission from an encoder to a decoder and for restoring the decoder after deletion of frames includes in the encoder: determination of masking/restoration parametres including at least phase information relating to frames of the encoded audio signal. Masking/restoration parametres defined in the encoder are sent to the decoder in which deletion of frames is masked in response to the received masking/restoration parametres. Masking deletion of frames includes repeated synchronisation in response to the obtained phase information of frames with masked deletion with corresponding frames of the audio signal encoded by the encoder. When masking/restoration parametres are not sent to the decoder the decoder assesses phase information of each frame of the encoded audio signal which was deleted during transmission from the encoder to the decoder. Similarly masking deletion of frames is performed in a decoder in response to the assessed phase information. Masking deletion of frames includes repeated synchronisation in response to the assessed phase information of each frame with masked deletion with the corresponding frame of the audio signal encoded by the encoder. ^ EFFECT: reliable encoding and decoding of audio signals. ^ 74 cl 13 dwg 6 tbl
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| 4G,3G | 11/03/2016 | ISLD-201608-014 | VOICEAGE CORPORATION | No | Family Member | ||||
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Technologies
Signal Processing Frame structure
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
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