Release Notes (R4):
- Retune top volumes for more balanced sound, less harsh
- Heavy emphasis on vocals, both depth and clarity
- DTMF volume curve reduced to better align w/ O6, F2, C2, B9
- SYSTEM volume curve reduced to better align touch sounds
- SYSTEM volume curve copied into AUDIBLE volume curve
Release notes (O6):
- Camera shutter (system sound) decreased volume curve to better align w/ R4/B9 and F2/C2
- Slight adjustment at min vol point for DTMF
- SYSTEM volume curve reduced to mitigate loud camera shutter
- SYSTEM volume curve copied into AUDIBLE volume curve
Bug:190960105
Test: High level tuning validation (b/190960105#comment15)
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: Icf0c9e921017b5e06ec950452a78a9d89acf86f2
O6:
1. significantly reduces distortion artefacts at high volumes
2. introduces bass management to balance low frequency response
across the volume curve
3. improved tonal balance at nominal volumes
4. improved landscape stereo image across the volume curve
R4:
1. This tuning improves the stereo balance between left and right
in landscape orientation, and removes the pop artefact when
rotating between portrait and landscape.
Bug: 179089856
Bug: 179089765
Test: playback, mute on/off, bypass on/off, lr swap/mixed
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I732742524ddbdd787ae86520141fb464ab01ca5a
+ Bass management improves the frequency response at
volume steps 23 and below.
+ Improved gain staging for clarity, dynamics and removal
of distortion artefacts
+ Improved stereo balance and bass in landscape
+ Removes tuning bug that applied too much gain correction
on quiet audio.
The portrait and landscape stereo tunings are retuned, but there
is no change to the speaker-safe tuning for notifications and
ringtones which are performing well.
Bug: 179089856
Test: playback mute on/off, bypass on/off, lr swap/mixed.
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I85c9347435a5baa43c20b4eb5dbd630efb502a4c
O6:
+ improves loudness
+ improves clarity
+ incorporates landscape tuning with good left-right balance
Tuning work will continue to improve transient performance at max volume,
and incorporate feedback from UTD and PAE tests.
R4:
+ Improves loudness
+ Improves clarity and reduces bass distortion
+ Incorporates a landscape tuning that balances left and right speakers.
Further tuning work will improve bass response at lower volume steps and
improve tonal balance to reduce sibilance. We will also incorporate
feedback from UTD and PAE subjective studies.
Bug: 179089856
Bug: 179089765
Test: playback / mute on,off/bypass/lr switch, mixed
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I85599edfd87c4c96f1486ea68f49006bf5a871fb
Bug: 165776638
Test: VOIP / voice/ playback/ record
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I2133cedac1cf718e3632df5f292a2688fc009428
- O6
- Improves the loudness of O6 while maintaining tonal balance.
- Improve loudness and tonal balance of ringtones and notifications
on speaker-safe.
- R4
- Significantly increases the perceived loudness of the
speakers at maximum volume.
- Improves the tonal balance and is tuned for distortion
mitigation for 1.8A current limits.
- Improves the loudness and tonal balance of ringtones and
notifications on speaker-safe.
Bug: 179089765
Bug: 179089856
Test: playback, mute on/off, bypass, lr swap/mixed
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I6bc5abfcb2d393c51946524861119629f158cbe2
