search for: compute_autocorrelation

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2007 May 02
0
FLAC on GPGPU
...devices promise to be the perfect acceleration platform for FLAC. They offer massive SIMD-type parallelism for floating-point processing, with two available kinds of batching (thread blocks vs. grids) mapping very nicely to FLAC's operations within audio frames vs. across frames. For example, compute_autocorrelation() parallelizes very nicely using a thread block: in lpc.c, "the readable version" while (lag--) { for (i = lag, d = 0.0; i < data_len; i++) d += data[i] * data[i-lag]; autoc[lag] = d; } instead of looping through the "while" block sequentially, we launch a &...