Apparatus and method for coupling two independent audio streams
First Claim
1. An audio reproducing apparatus, the apparatus comprising:
- an output unit for combining a first audio Stream and a second audio Stream in response to a cross-fade algorithm;
a first apparatus for processing the first audio Stream to be applied to the output unit, the first apparatus including a memory unit, the memory unit storing a portion of the first audio Stream to be combined with the second audio Stream; and
a second apparatus for processing the second audio Stream, the second audio Stream being applied to the output unit.
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Accused Products
Abstract
In providing a seamless transition between two audio Streams using the cross-fade technique, a clock rate in processing the current audio Stream is increased. The increased audio Stream processing rate permits the current audio Stream to finish processing the initial audio Stream by the beginning of the fade-out or fade-in duration period, whichever is longer. The initial audio Stream continues to be presented at the original clock rate, even during the fade-out and/or fade-in duration. However, the portion of the initial audio Stream that is to be played during the fade-in and/or fade-out portion of the presentation is stored in a memory unit. During the Cross-Fade Duration, the portion of the initial audio Stream stored in the memory unit is retrieved and combined with a second audio Stream according to the cross-fader algorithm.
96 Citations
19 Claims
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1. An audio reproducing apparatus, the apparatus comprising:
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an output unit for combining a first audio Stream and a second audio Stream in response to a cross-fade algorithm; a first apparatus for processing the first audio Stream to be applied to the output unit, the first apparatus including a memory unit, the memory unit storing a portion of the first audio Stream to be combined with the second audio Stream; and a second apparatus for processing the second audio Stream, the second audio Stream being applied to the output unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of combining two audio Streams with a cross-fade process, the method comprising:
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processing a first audio Stream; storing the portion of the processed first audio Stream to be cross-faded with a second audio Stream; processing a second audio Stream; and cross-fading the stored portion of the processed first audio Stream with a beginning portion of the processed second audio Stream. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An apparatus for combining a first audio Stream and a next audio Stream, the apparatus comprising:
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a first decoder for processing the first audio the first audio Stream; a first storage unit for storing the end portion of the first audio Stream; a next decoder unit for decoding the next audio Stream; a next memory unit for storing an end portion of the next audio Stream; and a cross-fade controller, the cross-fade controller combining the stored end portion of the first audio and the beginning portion of the next audio Stream according to a cross-fade algorithm. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification