Accelerator engine for processing functions used in audio...

Details Accelerator engine for processing functions used in audio... Accelerator engine for processing functions used in audio...

2005-10-25

2005-10-25

Tran, Sinh (Department: 2644)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

C708S200000

Reexamination Certificate

active

06959222

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.

REFERENCES:
patent: 5901301 (1999-05-01), Matsuo et al.
patent: 6253293 (2001-06-01), Rao et al.
patent: 6311204 (2001-10-01), Mills
patent: 6405227 (2002-06-01), Prakash
patent: 6430529 (2002-08-01), Huang

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