| f06cdb511b2d093fed687fdff4153f7b6e088b62 |
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30-Mar-2012 |
Eric Laurent <elaurent@google.com> |
Echo reference tuning and bug fixes
- Add some smoothing in the method used to detect and compensate for echo path
delay deviation: update the reference buffer only if a deviation in the same
direction is observed for more than N consecutive reads.
Also increase the threshold controlling the reference buffer update to avoid
excessive adjustments.
- Fix problem in get_next_buffer() when echo_reference_write() is called with
variable buffer sizes which happens when the echo reference is used after a
resampler in the audio HAL.
- Use the same resampler quality level in echo reference and audio HAL to help
the AEC by reducing the delay variation and filtering differences between the
capture and echo path.
- Take resampler delay into account when calculating echo reference delay.
Change-Id: I2f425154efddd9a28f1d035fde70d55104043606
/system/media/audio_utils/echo_reference.c
|
| c164cb8a9ee435c00d1a7daeaf5e6836d772eb40 |
|
17-Feb-2012 |
Eric Laurent <elaurent@google.com> |
echo reference: fix buffer overflow
commit 33e8f78b introduced a regression causing the input buffer
size to be underestimated when downsampling and doing stereo to mono
conversion.
Also a test in create_echo_reference() was not removed and prevented
write sampling rates lower than read sampling rates.
Change-Id: I2ce2e32748eb9d00f4d5b32e5db5149f177c8804
/system/media/audio_utils/echo_reference.c
|
| 33e8f78bb282cbb7b1c55ce0c9d412458989bc9e |
|
06-Feb-2012 |
Eric Laurent <elaurent@google.com> |
audio utils: modify echo reference resampler
Modify echo reference resampler to accept upsampling.
This allows higher sampling rates in the capture path than
in the playback path.
Change-Id: Id7b5a11a53e8e09511dcb060bff8355bca3c1420
/system/media/audio_utils/echo_reference.c
|
| d0e472977acbfd5c8d56d506f40039f451f84f8f |
|
06-Jan-2012 |
Steve Block <steveblock@google.com> |
Rename (IF_)LOGW(_IF) to (IF_)ALOGW(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/157065
Bug: 5449033
Change-Id: I270cbf7b920d5f2fbb5f345f3c88426697c4391d
/system/media/audio_utils/echo_reference.c
|
| 473d4a5c5c66fd8a2e99791d61fa16076558ab54 |
|
26-Oct-2011 |
Steve Block <steveblock@google.com> |
Rename LOGV(_IF) to ALOGV(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/#/c/143865
Bug: 5449033
Change-Id: I4c0e3dc9da0a0cdf9aef8be4fae7b24da876dc17
/system/media/audio_utils/echo_reference.c
|
| c9d5dff9789312449c936913a577fa799565bf1f |
|
01-Sep-2011 |
Eric Laurent <elaurent@google.com> |
clean up in echo reference code
Change-Id: Ie06ed382eee2f1d4d1289d9a49d8a93dcf103e4e
/system/media/audio_utils/echo_reference.c
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| b3184d71bc6cee9fcbb36343e379143329be00ce |
|
18-Aug-2011 |
Eric Laurent <elaurent@google.com> |
Converted libaudioutils implementation to C.
Converted libaudioutils implementation and interfaces from C++ to C
and removed dependencies from frameworks/base classes so that it can
be used by any audio HAL implementation.
Change-Id: I3f7ce541be8495d41864661451540971b067359b
/system/media/audio_utils/echo_reference.c
|