公开(公告)号：US20220328057A1

公开(公告)日：2022-10-13

申请号：US17633782

申请日：2020-09-15

申请人： Google LLC

发明人： Jae Lee ,  Priya Kasirajan ,  Leng Ooi

IPC分类号： G10L21/0232

摘要： The present disclosure provides systems and method for determining a background noise level. The device may receive audio from two or more microphones. The audio may include a first signal and a second signal, such that each microphone receives its own signal. The time, loudness, frequency of the first and second signals may be compared to determine the source of the audio, such as whether the audio is the user's voice or background noise. Based on the source of the audio, the audio may be suppressed to reduce false estimations when calculating the background noise level.

公开(公告)号：US11468874B2

公开(公告)日：2022-10-11

申请号：US17097616

申请日：2020-11-13

申请人： Google LLC

发明人： Guohua Sun ,  Jae Lee ,  Tiantian Xu

IPC分类号： H04R1/10 ,  G10K11/178

摘要： A hybrid ANC system that can allow a feedback microphone to receive the same external noise as a feedforward microphone. A processor can generate an anti-noise signal based on what both microphones received to cancel a broader range of frequencies of the external noise.

公开(公告)号：US20220294405A1

公开(公告)日：2022-09-15

申请号：US17632583

申请日：2019-09-06

申请人： Google LLC

发明人： Jae Lee ,  Priya Kasirajan

IPC分类号： H03G3/32 ,  H03G5/16

摘要： The present disclosure provides systems and methods for progressively transitioning the playback volume based on a background noise level. The device (800) may have a predetermined quantity of volume levels between a minimum volume and a maximum volume. The volume levels may be spaced by predetermined increments, such that there is a predefined difference between adjacent volume levels. A digital gain (102) may be used to adjust the volume level and an analog gain (106) may allow for the playback volume to be adjusted to an amount between adjacent volume levels. The playback volume may progressively transition within the predefined volume levels by an amount less than the predetermined difference between adjacent volume levels. This smaller amount may be the analog gain (106).

公开(公告)号：US20220108700A1

公开(公告)日：2022-04-07

申请号：US17551297

申请日：2021-12-15

申请人： Google LLC

发明人： Jae Lee

IPC分类号： G10L17/00 ,  H04R29/00

摘要： The present disclosure provides for improved hot word detection in electronic devices, particularly small form factor devices such as wearables. The electronic device includes an accelerometer onboard to pick up voice in noisy conditions, and utilizes the accelerometer to confirm that a particular user intended to activate the hot word detection, thereby reducing false detection of other people's voices.

公开(公告)号：US10674265B1

公开(公告)日：2020-06-02

申请号：US16395360

申请日：2019-04-26

申请人： Google LLC

发明人： Jae Lee

IPC分类号： H04R3/04 ,  H04R5/04 ,  G10L21/0232 ,  H04R5/027 ,  H03G3/02

摘要： A system and method for dynamically adjusting the quantity of volume levels and/or the loudness delta are disclosed. The quantity of volume levels may the number of increments between a minimum and maximum volume. The loudness delta may be the difference between adjacent volume levels. The device may one or more microphones to determine a background noise level. Based on the determined background noise level, and after receiving a user input to adjust the volume, the device may adjust the quantity of volume levels and/or the loudness delta depending on if the background noise level is increased or low.