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

/frameworks/base/media/libstagefright/codecs/amrwb/src/
H A Dpreemph_amrwb_dec.cpp48 int16 mu, (i) Q15 : preemphasis coefficient
116 int16 mu, /* (i) Q15 : preemphasis coefficient */
125 L_tmp = msu_16by16_from_int32((int32)x[i] << 16, x[i - 1], mu);
114 preemph_amrwb_dec( int16 x[], int16 mu, int16 lg ) argument
H A Ddeemphasis_32.cpp50 int16 mu, (i) Q15 : deemphasis factor
57 32-bits filtering through 1/(1-mu z^-1)
69 Deemphasis H(z) = 1/(1 - 0.68z^(-1)) where mu = 0.67999 in Q15
124 int16 mu, /* (i) Q15 : deemphasis factor */
137 L_tmp = fxp_mac_16by16(*mem, mu, L_tmp),
149 L_tmp = fxp_mac_16by16(y[i - 1], mu, L_tmp),
158 L_tmp = fxp_mac_16by16(y[i - 1], mu, L_tmp),
120 deemphasis_32( int16 x_hi[], int16 x_lo[], int16 y[], int16 mu, int16 L, int16 * mem ) argument
/frameworks/base/media/libstagefright/codecs/amrwbenc/src/
H A Dpreemph.c30 Word16 mu, /* (i) Q15 : preemphasis coefficient */
43 L_tmp -= (x[i - 1] * mu)<<1;
48 L_tmp -= ((*mem) * mu)<<1;
59 Word16 mu, /* (i) Q15 : preemphasis coefficient */
72 L_tmp -= (x[i - 1] * mu)<<1;
78 L_tmp -= ((*mem) * mu)<<1;
28 Preemph( Word16 x[], Word16 mu, Word16 lg, Word16 * mem ) argument
57 Preemph2( Word16 x[], Word16 mu, Word16 lg, Word16 * mem ) argument
H A Ddeemph.c20 * Description:filtering through 1/(1-mu z^ -1) *
32 Word16 mu, /* (i) Q15 : deemphasis factor */
41 L_tmp = L_mac(L_tmp, *mem, mu);
47 L_tmp = L_mac(L_tmp, x[i - 1], mu);
59 Word16 mu, /* (i) Q15 : deemphasis factor */
67 L_tmp += ((*mem) * mu)<<1;
72 L_tmp += (x[i - 1] * mu)<<1;
84 Word16 mu, /* (i) Q15 : deemphasis factor */
92 fac = mu >> 1; /* Q15 --> Q14 */
30 Deemph( Word16 x[], Word16 mu, Word16 L, Word16 * mem ) argument
57 Deemph2( Word16 x[], Word16 mu, Word16 L, Word16 * mem ) argument
80 Deemph_32( Word16 x_hi[], Word16 x_lo[], Word16 y[], Word16 mu, Word16 L, Word16 * mem ) argument
H A DvoAMRWBEnc.c203 Word16 tmp, gain1, gain2, exp, Q_new, mu, shift, max; local
276 mu = PREEMPH_FAC >> 1; /* Q15 --> Q14 */
280 L_tmp -= (st->mem_preemph * mu)<<1;
286 L_tmp -= (new_speech[i - 1] * mu)<<1;
333 L_tmp -= (new_speech[i - 1] * mu)<<1;
339 L_tmp -= (st->mem_preemph * mu)<<1;

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