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  /external/chromium_org/third_party/webrtc/modules/audio_coding/neteq/
expand.h 154 // Calculate the auto-correlation of |input|, with length |input_length|
155 // samples. The correlation is calculated from a downsampled version of
157 // |output_scale|. Returns the length of the correlation vector.
158 int16_t Correlation(const int16_t* input, size_t input_length,
expand.cc 340 // Calculate correlation in downsampled domain (4 kHz sample rate).
344 // initialized to the return value of Correlation().
345 Correlation(audio_history, signal_length, correlation_vector,
348 // Find peaks in correlation vector.
353 // Adjust peak locations; cross-correlation lags start at 2.5 ms
385 ratio = 0; // No correlation set result to zero.
399 // Calculate the exact best correlation in the range between
421 // Calculate the correlation, store in |correlation_vector2|.
444 // Calculate the correlation coefficient between the two portions of the
546 // Calculate scale value needed for auto-correlation
760 int32_t correlation[kNumCorrelationLags]; local
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