Searched defs:auto_corr (Results 1 - 5 of 5) sorted by relevance

/external/libopus/silk/float/
H A Dschur_FLP.c36 const silk_float auto_corr[], /* I autocorrelation sequence (length order+1) */
48 C[ k ][ 0 ] = C[ k ][ 1 ] = auto_corr[ k ];
34 silk_schur_FLP( silk_float refl_coef[], const silk_float auto_corr[], opus_int order ) argument
H A Dfind_pitch_lags_FLP.c47 silk_float auto_corr[ MAX_FIND_PITCH_LPC_ORDER + 1 ]; local
85 silk_autocorrelation_FLP( auto_corr, Wsig, psEnc->sCmn.pitch_LPC_win_length, psEnc->sCmn.pitchEstimationLPCOrder + 1 );
88 auto_corr[ 0 ] += auto_corr[ 0 ] * FIND_PITCH_WHITE_NOISE_FRACTION + 1;
91 res_nrg = silk_schur_FLP( refl_coef, auto_corr, psEnc->sCmn.pitchEstimationLPCOrder );
94 psEncCtrl->predGain = auto_corr[ 0 ] / silk_max_float( res_nrg, 1.0f );
H A Dnoise_shape_analysis_FLP.c141 silk_float auto_corr[ MAX_SHAPE_LPC_ORDER + 1 ]; local
247 silk_warped_autocorrelation_FLP( auto_corr, x_windowed, warping,
251 silk_autocorrelation_FLP( auto_corr, x_windowed, psEnc->sCmn.shapeWinLength, psEnc->sCmn.shapingLPCOrder + 1 );
255 auto_corr[ 0 ] += auto_corr[ 0 ] * SHAPE_WHITE_NOISE_FRACTION;
258 nrg = silk_levinsondurbin_FLP( &psEncCtrl->AR2[ k * MAX_SHAPE_LPC_ORDER ], auto_corr, psEnc->sCmn.shapingLPCOrder );
/external/libopus/silk/fixed/
H A Dfind_pitch_lags_FIX.c50 opus_int32 auto_corr[ MAX_FIND_PITCH_LPC_ORDER + 1 ]; local
90 silk_autocorr( auto_corr, &scale, Wsig, psEnc->sCmn.pitch_LPC_win_length, psEnc->sCmn.pitchEstimationLPCOrder + 1, arch );
93 auto_corr[ 0 ] = silk_SMLAWB( auto_corr[ 0 ], auto_corr[ 0 ], SILK_FIX_CONST( FIND_PITCH_WHITE_NOISE_FRACTION, 16 ) ) + 1;
96 res_nrg = silk_schur( rc_Q15, auto_corr, psEnc->sCmn.pitchEstimationLPCOrder );
99 psEncCtrl->predGain_Q16 = silk_DIV32_varQ( auto_corr[ 0 ], silk_max_int( res_nrg, 1 ), 16 );
H A Dnoise_shape_analysis_FIX.c157 opus_int32 auto_corr[ MAX_SHAPE_LPC_ORDER + 1 ]; local
282 silk_warped_autocorrelation_FIX( auto_corr, &scale, x_windowed, warping_Q16, psEnc->sCmn.shapeWinLength, psEnc->sCmn.shapingLPCOrder );
285 silk_autocorr( auto_corr, &scale, x_windowed, psEnc->sCmn.shapeWinLength, psEnc->sCmn.shapingLPCOrder + 1, arch );
289 auto_corr[0] = silk_ADD32( auto_corr[0], silk_max_32( silk_SMULWB( silk_RSHIFT( auto_corr[ 0 ], 4 ),
293 nrg = silk_schur64( refl_coef_Q16, auto_corr, psEnc->sCmn.shapingLPCOrder );

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