Trick mode audio playback
AssigneeThomson Licensing
InventorsRonald Lynn Blair, Mark Alan Schultz, Robert Warren Schmidt
Life of this patent
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Abstract
A method for playing a digital audio recording at a speed other than 1×, the method comprises retrieving stored digital audio information represented in a plurality of audio frames. A portion of the plurality of audio frames are ranked according to an energy content in the portion of audio frames. Audio frames having least energy content in accordance with the ranking are deleted from the portion of the plurality of audio frames. Remaining ones of the portion of audio frames following deletion are selected to form an audio trick mode playback signal.
Claims19
A method for playing a digital audio recording at a speed other than 1×, the method comprising:
- retrieving stored digital audio information represented in a plurality of audio frames;
- ranking at least a portion of said plurality of audio frames according to an energy content of said portion of said audio frames;
- deleting from said portion of said plurality of audio frames having least energy content in accordance with said ranking step;
- and,
- selecting remaining ones of said portion of audio frames following said deleting step to form an audio trick mode playback signal.
A method for playing audio programming accompanying a video presentation during trick mode playback at a speed other than 1×, the method comprising:
- retrieving information representing at least a video portion and a corresponding audio portion of said video presentation, said audio portion representing audio information in a plurality of audio frames;
- ranking at least a portion of said plurality of audio frames according to an energy content of said portion of said audio frames;
- and,
- selecting ones of said portion of audio frames based on said ranking step to form an audio trick mode playback signal.
An apparatus for playing audio programming associated with video programming during trick mode playback at other than 1× speed, comprising:
- a storage medium reader for retrieving from a storage medium information representing at least a video portion and a corresponding audio portion of a program, said audio portion representing audio information in a plurality of audio frames;
- and,
- an audio processor for ranking at least a portion of said plurality of audio frames according to an energy content of said portion of said audio frames, and forming an audio trick mode playback signal from selected ones of said portion of audio frames, in accordance with said ranking of said at least a portion of said audio frames.
Dependencies are inferred from the claim text.