Method and apparatus for audible fast-forward or reverse of compressed audio content

Method and apparatus for audible fast-forward or reverse of compressed audio content

The present invention relates to method and apparatus for use of digital communications signals, and more particularly, to method and apparatus for audible fast-forward or reverse of compressed audio content. A method for performing audible fast-forward or reverse of audio content represented in a c...

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Hauptverfasser: Lueck, Charles D, Robinson, Alec C, Rowlands, Jonathan L
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Sprache:eng
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creator Lueck, Charles D
Robinson, Alec C
Rowlands, Jonathan L
description The present invention relates to method and apparatus for use of digital communications signals, and more particularly, to method and apparatus for audible fast-forward or reverse of compressed audio content. A method for performing audible fast-forward or reverse of audio content represented in a compressed format, such as, but not limited to, MPEG-1 Layer 3 (MP3) or MPEG-2 Advance Audio Coding (AAC) employs a fast-forward controller which performs fast-forward or reverse by repeatedly skipping forward or reverse in the compressed audio data stream, retrieving a block of data, and then splicing these data blocks back together. A decoder is then used to decode each of these blocks, to detect when a block switch has occurred (a splice in the data stream), and to quickly resynchronize at each transition. Hierarchical or multiplexed data streams may be decoded using a cascade of decoders each employing this technique. The decoder uses a robust sync search for performing resynchronization and error recovery.
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title Method and apparatus for audible fast-forward or reverse of compressed audio content
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