| /device/google/dragon/audio/hal/dsp/ |
| biquad.h | 13 /* The biquad filter parameters. The transfer function H(z) is (b0 + b1 * z^(-1)
21 struct biquad { struct
28 /* The type of the biquad filters */
41 /* Initialize a biquad filter parameters from its type and parameters.
43 * bq - The biquad filter we want to set.
44 * type - The type of the biquad filter.
50 void biquad_set(struct biquad *bq, enum biquad_type type, double freq, double Q,
|
| eq.h | 13 /* An EQ is a chain of biquad filters. See Web Audio API spec for details of the
14 * biquad filters and their parameters. */
16 #include "biquad.h"
18 /* Maximum number of biquad filters an EQ can have */
29 /* Append a biquad filter to an EQ. An EQ can have at most MAX_BIQUADS_PER_EQ
30 * biquad filters.
33 * type - The type of the biquad filter we want to append.
44 /* Append a biquad filter to an EQ. An EQ can have at most MAX_BIQUADS_PER_EQ
45 * biquad filters. This is similar to eq_append_biquad(), but it specifies the
46 * biquad coefficients directly
[all...] |
| eq2.h | 16 #include "biquad.h"
18 /* Maximum number of biquad filters an EQ2 can have per channel */
29 /* Append a biquad filter to an EQ2. An EQ2 can have at most MAX_BIQUADS_PER_EQ2
30 * biquad filters per channel.
34 * type - The type of the biquad filter we want to append.
45 /* Append a biquad filter to an EQ2. An EQ2 can have at most MAX_BIQUADS_PER_EQ2
46 * biquad filters. This is similar to eq2_append_biquad(), but it specifies the
47 * biquad coefficients directly.
51 * biquad - The parameters for the biquad filter
[all...] |
| eq.c | 11 struct biquad biquad[MAX_BIQUADS_PER_EQ]; member in struct:eq
30 biquad_set(&eq->biquad[eq->n++], type, freq, Q, gain);
34 int eq_append_biquad_direct(struct eq *eq, const struct biquad *biquad)
38 eq->biquad[eq->n++] = *biquad;
47 struct biquad *q = &eq->biquad[i];
82 struct biquad *q = &eq->biquad[i]
[all...] |
| eq2.c | 11 struct biquad biquad[MAX_BIQUADS_PER_EQ2][2]; member in struct:eq2
23 biquad_set(&eq2->biquad[i][j], BQ_NONE, 0, 0, 0);
38 biquad_set(&eq2->biquad[eq2->n[channel]++][channel], type, freq, Q,
44 const struct biquad *biquad)
48 eq2->biquad[eq2->n[channel]++][channel] = *biquad;
52 static inline void eq2_process_one(struct biquad (*bq)[2],
55 struct biquad *qL = &bq[0][0]
[all...] |
| biquad.c | 12 #include "biquad.h"
30 static void set_coefficient(struct biquad *bq, double b0, double b1, double b2,
41 static void biquad_lowpass(struct biquad *bq, double cutoff, double resonance)
50 /* Compute biquad coefficients for lowpass filter */
76 static void biquad_highpass(struct biquad *bq, double cutoff, double resonance)
85 /* Compute biquad coefficients for highpass filter */
113 static void biquad_bandpass(struct biquad *bq, double frequency, double Q)
153 static void biquad_lowshelf(struct biquad *bq, double frequency, double db_gain)
187 static void biquad_highshelf(struct biquad *bq, double frequency,
222 static void biquad_peaking(struct biquad *bq, double frequency, double Q
[all...] |
| drc.c | 134 /* Calculates the biquad coefficients for two emphasis stages. */
136 struct biquad *emphasis,
137 struct biquad *deemphasis)
173 struct biquad e;
174 struct biquad d;
|
| crossover.c | 7 #include "biquad.h"
11 struct biquad q;
|
| crossover2.c | 8 #include "biquad.h"
12 struct biquad q;
|
| /device/google/dragon/audio/hal/ |
| Android.mk | 9 dsp/biquad.c \
|
