Kernel-based digital audio mixer

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369 4, H04B 120

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active

057681260

ABSTRACT:
A system and method are disclosed for mixing multiple digital audio streams originating from or destined for multiple tasks in a computer system. In one aspect, a method is carried out in a computer system having a processor. The processor executes a multitasking operating system that has a kernel, executes a first task under control of the operating system, and while executing the first task executes a second task under control of the operating system. First and second audio streams are provided, each made up of a series of digital audio samples representing an audio signal and affiliated, respectively, with the first and second tasks. By executing a portion of the operating system kernel with the processor, the first and second audio streams are mixed to provide a mixed audio stream made up of a series of digital audio samples representing a superposition of the first and second audio signals.

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