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webrtc / src / / 78b1c4a4877affaabf5c4263d58250d44182cd46
commit78b1c4a4877affaabf5c4263d58250d44182cd46[log] [tgz]
authorGustaf Ullberg <gustaf@webrtc.org>Fri May 25 08:12:58 2018
committerCommit Bot <commit-bot@chromium.org>Fri May 25 09:31:38 2018
treeb029345b366e721cc8da8fbbcf967de431ed321d
parent90d05e9230d69071eaf0600d93c42a7be7ab5759 [diff]
AEC3: Delay estimator uses bandpass filtered signal with downsampling factor 8

Letting the delay estimator operate at a sampling frequency of 2 kHz
with audio between 0 and 1 kHz makes it sensitive to noisy environments.
This CL bandpass filters the 16 kHz signal before downsampling to 2 kHz
in a way that the downsampled 2 kHz signal contains audio between 1 and
2 kHz. It also sets downsampling factor 8 as default which significantly
reduces computational complexity.

Bug: webrtc:9288,chromium:846615
Change-Id: Iaf67898a1a14326cd61bb7f81c14d3c12a697c8d
Reviewed-on: https://webrtc-review.googlesource.com/78703
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23395}
5 files changed
tree: b029345b366e721cc8da8fbbcf967de431ed321d
  1. api/
  2. audio/
  3. build_overrides/
  4. call/
  5. common_audio/
  6. common_video/
  7. data/
  8. examples/
  9. infra/
  10. logging/
  11. media/
  12. modules/
  13. ortc/
  14. p2p/
  15. pc/
  16. resources/
  17. rtc_base/
  18. rtc_tools/
  19. sdk/
  20. stats/
  21. style-guide/
  22. system_wrappers/
  23. test/
  24. third_party/
  25. tools_webrtc/
  26. video/
  27. .clang-format
  28. .git-blame-ignore-revs
  29. .gitignore
  30. .gn
  31. .vpython
  32. AUTHORS
  33. BUILD.gn
  34. CODE_OF_CONDUCT.md
  35. codereview.settings
  36. common_types.cc
  37. common_types.h
  38. DEPS
  39. LICENSE
  40. license_template.txt
  41. LICENSE_THIRD_PARTY
  42. native-api.md
  43. OWNERS
  44. PATENTS
  45. PRESUBMIT.py
  46. presubmit_test.py
  47. presubmit_test_mocks.py
  48. pylintrc
  49. README.chromium
  50. README.md
  51. style-guide.md
  52. THIRD_PARTY_CHROMIUM_DEPS.json
  53. THIRD_PARTY_WEBRTC_DEPS.json
  54. typedefs.h
  55. WATCHLISTS
  56. webrtc.gni
  57. whitespace.txt
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.

Development

See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.

Authoritative list of directories that contain the native API header files.

More info