| 7dfe9c85acc1c20ae9957bc8fb7caa5e6d503bbf |
|
30-Dec-2015 |
Cheng-Yi Chiang <cychiang@chromium.org> |
[autotest] audio_test_utils: Check anomaly in check_recorded_frequency
Add an argument check_anomaly in check_recorded_frequency. Use anomaly
detection algorithm in audio_analysis module to check the signal block
by block and find the blocks that are not similar to sine wave.
BUG=chromium:573154
TEST=not used yet
Change-Id: I4df072ba06953f5d8723dc8b5462dfc5a54859ea
Reviewed-on: https://chromium-review.googlesource.com/319969
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Kalin Stoyanov <kalin@chromium.org>
/external/autotest/client/cros/audio/audio_analysis.py
|
| 3f282551c8d176cfe819ff495bed2b3414165551 |
|
08-Dec-2015 |
Cheng-Yi Chiang <cychiang@chromium.org> |
[autotest] audio_analysis: Raise exception for empty data
Raises EmptyDataError when input signal is empty. Otherwise, there will
be ZeroDivisionError.
BUG=chromium:567360
TEST=unittest
Change-Id: I8024a6ef88b7c6fda0c0fb28dff5ad62038f7ff7
Reviewed-on: https://chromium-review.googlesource.com/316273
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Kalin Stoyanov <kalin@chromium.org>
/external/autotest/client/cros/audio/audio_analysis.py
|
| 4085acce1e6dd876f6df4e3077b1cf2026478a63 |
|
17-Nov-2015 |
Cheng-Yi Chiang <cychiang@chromium.org> |
[autotest] audio_analysis: Add method to detect anomaly
Detects anomaly by pattern matching of moving window.
This method can detects anomalies including:
1. Underrun: The signal contains a block of constant amplitude.
2. Skipped block: The signal contains a skipped block.
By setting default threshold of correlation index to 0.85, this method
can tolerate normal noise of amplitude 0.3 when sine wave signal
amplitude is 1. That is, this method will not judge the noise as
anomaly under this condition, but is still able to detect anomaly.
BUG=chromium:557420
TEST=unittest
Change-Id: Ieb36098a382e74f0f47a678d1d470a5dcbbb1ef8
Reviewed-on: https://chromium-review.googlesource.com/312687
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
/external/autotest/client/cros/audio/audio_analysis.py
|
| f9427ffac42b54540e482ecacf74416e77411aa0 |
|
02-Nov-2015 |
Cheng-Yi Chiang <cychiang@chromium.org> |
[autotest] audio_analysis: Add a module for audio analysis
Add audio_analysis module which provides spectral_analysis to estimate
the dominant frequencies in a signal.
BUG=chromium:550395
TEST=audio_analysis_unittest
Change-Id: I616e0a5811d993493eb6e3594a7f54b921dc1152
Reviewed-on: https://chromium-review.googlesource.com/310221
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Hsinyu Chao <hychao@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
/external/autotest/client/cros/audio/audio_analysis.py
|