mirror of
https://github.com/danog/libtgvoip.git
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5caaaafa42
I'm now using the entire audio processing module from WebRTC as opposed to individual DSP algorithms pulled from there before. Seems to work better this way.
88 lines
3.9 KiB
C
88 lines
3.9 KiB
C
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_PROCESSING_AECM_AECM_DEFINES_H_
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#define MODULES_AUDIO_PROCESSING_AECM_AECM_DEFINES_H_
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#define AECM_DYNAMIC_Q /* Turn on/off dynamic Q-domain. */
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/* Algorithm parameters */
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#define FRAME_LEN 80 /* Total frame length, 10 ms. */
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#define PART_LEN 64 /* Length of partition. */
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#define PART_LEN_SHIFT 7 /* Length of (PART_LEN * 2) in base 2. */
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#define PART_LEN1 (PART_LEN + 1) /* Unique fft coefficients. */
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#define PART_LEN2 (PART_LEN << 1) /* Length of partition * 2. */
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#define PART_LEN4 (PART_LEN << 2) /* Length of partition * 4. */
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#define FAR_BUF_LEN PART_LEN4 /* Length of buffers. */
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#define MAX_DELAY 100
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/* Counter parameters */
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#define CONV_LEN 512 /* Convergence length used at startup. */
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#define CONV_LEN2 (CONV_LEN << 1) /* Used at startup. */
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/* Energy parameters */
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#define MAX_BUF_LEN 64 /* History length of energy signals. */
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#define FAR_ENERGY_MIN 1025 /* Lowest Far energy level: At least 2 */
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/* in energy. */
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#define FAR_ENERGY_DIFF 929 /* Allowed difference between max */
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/* and min. */
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#define ENERGY_DEV_OFFSET 0 /* The energy error offset in Q8. */
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#define ENERGY_DEV_TOL 400 /* The energy estimation tolerance (Q8). */
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#define FAR_ENERGY_VAD_REGION 230 /* Far VAD tolerance region. */
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/* Stepsize parameters */
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#define MU_MIN 10 /* Min stepsize 2^-MU_MIN (far end energy */
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/* dependent). */
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#define MU_MAX 1 /* Max stepsize 2^-MU_MAX (far end energy */
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/* dependent). */
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#define MU_DIFF 9 /* MU_MIN - MU_MAX */
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/* Channel parameters */
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#define MIN_MSE_COUNT 20 /* Min number of consecutive blocks with enough */
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/* far end energy to compare channel estimates. */
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#define MIN_MSE_DIFF 29 /* The ratio between adapted and stored channel to */
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/* accept a new storage (0.8 in Q-MSE_RESOLUTION). */
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#define MSE_RESOLUTION 5 /* MSE parameter resolution. */
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#define RESOLUTION_CHANNEL16 12 /* W16 Channel in Q-RESOLUTION_CHANNEL16. */
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#define RESOLUTION_CHANNEL32 28 /* W32 Channel in Q-RESOLUTION_CHANNEL. */
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#define CHANNEL_VAD 16 /* Minimum energy in frequency band */
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/* to update channel. */
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/* Suppression gain parameters: SUPGAIN parameters in Q-(RESOLUTION_SUPGAIN). */
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#define RESOLUTION_SUPGAIN 8 /* Channel in Q-(RESOLUTION_SUPGAIN). */
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#define SUPGAIN_DEFAULT (1 << RESOLUTION_SUPGAIN) /* Default. */
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#define SUPGAIN_ERROR_PARAM_A 3072 /* Estimation error parameter */
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/* (Maximum gain) (8 in Q8). */
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#define SUPGAIN_ERROR_PARAM_B 1536 /* Estimation error parameter */
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/* (Gain before going down). */
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#define SUPGAIN_ERROR_PARAM_D SUPGAIN_DEFAULT /* Estimation error parameter */
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/* (Should be the same as Default) (1 in Q8). */
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#define SUPGAIN_EPC_DT 200 /* SUPGAIN_ERROR_PARAM_C * ENERGY_DEV_TOL */
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/* Defines for "check delay estimation" */
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#define CORR_WIDTH 31 /* Number of samples to correlate over. */
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#define CORR_MAX 16 /* Maximum correlation offset. */
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#define CORR_MAX_BUF 63
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#define CORR_DEV 4
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#define CORR_MAX_LEVEL 20
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#define CORR_MAX_LOW 4
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#define CORR_BUF_LEN (CORR_MAX << 1) + 1
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/* Note that CORR_WIDTH + 2*CORR_MAX <= MAX_BUF_LEN. */
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#define ONE_Q14 (1 << 14)
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/* NLP defines */
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#define NLP_COMP_LOW 3277 /* 0.2 in Q14 */
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#define NLP_COMP_HIGH ONE_Q14 /* 1 in Q14 */
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#endif
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