gain_map_internal.h 2.1 KB

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  1. /*
  2. * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  3. *
  4. * Use of this source code is governed by a BSD-style license
  5. * that can be found in the LICENSE file in the root of the source
  6. * tree. An additional intellectual property rights grant can be found
  7. * in the file PATENTS. All contributing project authors may
  8. * be found in the AUTHORS file in the root of the source tree.
  9. */
  10. #ifndef MODULES_AUDIO_PROCESSING_AGC_GAIN_MAP_INTERNAL_H_
  11. #define MODULES_AUDIO_PROCESSING_AGC_GAIN_MAP_INTERNAL_H_
  12. namespace webrtc {
  13. static const int kGainMapSize = 256;
  14. // Uses parameters: si = 2, sf = 0.25, D = 8/256
  15. static const int kGainMap[kGainMapSize] = {
  16. -56, -54, -52, -50, -48, -47, -45, -43, -42, -40, -38, -37, -35, -34, -33,
  17. -31, -30, -29, -27, -26, -25, -24, -23, -22, -20, -19, -18, -17, -16, -15,
  18. -14, -14, -13, -12, -11, -10, -9, -8, -8, -7, -6, -5, -5, -4, -3,
  19. -2, -2, -1, 0, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6,
  20. 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13,
  21. 13, 14, 14, 15, 15, 15, 16, 16, 17, 17, 17, 18, 18, 18, 19,
  22. 19, 19, 20, 20, 21, 21, 21, 22, 22, 22, 23, 23, 23, 24, 24,
  23. 24, 24, 25, 25, 25, 26, 26, 26, 27, 27, 27, 28, 28, 28, 28,
  24. 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 32, 32, 32, 32, 33,
  25. 33, 33, 33, 34, 34, 34, 35, 35, 35, 35, 36, 36, 36, 36, 37,
  26. 37, 37, 38, 38, 38, 38, 39, 39, 39, 39, 40, 40, 40, 40, 41,
  27. 41, 41, 41, 42, 42, 42, 42, 43, 43, 43, 44, 44, 44, 44, 45,
  28. 45, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47, 48, 48, 48, 48,
  29. 49, 49, 49, 49, 50, 50, 50, 50, 51, 51, 51, 51, 52, 52, 52,
  30. 52, 53, 53, 53, 53, 54, 54, 54, 54, 55, 55, 55, 55, 56, 56,
  31. 56, 56, 57, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59, 59, 60,
  32. 60, 60, 60, 61, 61, 61, 61, 62, 62, 62, 62, 63, 63, 63, 63,
  33. 64};
  34. } // namespace webrtc
  35. #endif // MODULES_AUDIO_PROCESSING_AGC_GAIN_MAP_INTERNAL_H_