Accelerator engine for processing functions used in audio algorithms
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United States of America Patent
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Oct 25, 2005
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N/A
app pub date -
Apr 13, 2000
filing date -
Apr 13, 2000
priority date (Note) -
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Abstract
An engine for processing functions used in audio algorithms. The engine runs in parallel with a digital signal processor (DSP) in an audio chip to increase performance for that chip. Functions performed by the engine include biquad filtering and inverse discrete cosine transform (IDCT) including pre-multiplication, inverse Fast Fourier transform (IFFT), and post-multiplication, which would otherwise be performed by the DSP. The DSP is therefore free to perform other functions demanded by the chip. Resources in the engine are processed in a pipeline structure and are thus highly utilized. Data are stored in a predefined order to increase efficiency.
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