公开(公告)号：US20200342878A1

公开(公告)日：2020-10-29

申请号：US16710189

申请日：2019-12-11

Applicant: Google LLC

Inventor： Jae Lee

IPC: G10L17/00 ,  H04R29/00

Abstract: 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：US20240348969A1

公开(公告)日：2024-10-17

申请号：US18702281

申请日：2022-10-19

Applicant: Google LLC

Inventor： Guohua Sun ,  Jae Lee

IPC: H04R1/10 ,  G10K11/178

CPC classification number: H04R1/1083 ,  G10K11/17854 ,  H04R2460/05

Abstract: A wearable device includes a feedforward microphone; a feedback microphone; a voice accelerometer; and one or more processors in communication with the feedforward microphone, the feedback microphone, and the voice accelerometer. The one or more processors may be configured to receive an occlusion effect (“OE”) profile associated with increased sound pressure level within an ear canal; determine an OE gain profile based on the OE profile; receive voice accelerometer data; adjust the OE gain profile based on the voice accelerometer data; generate an OE cancellation signal based on the OE gain profile to equalize the OE profile; receive, from the feedforward microphone, first audio content including external audio; receive, from the feedback microphone, second audio content including audio within the ear canal of a user; and adjust, based on the OE cancellation signal and the received first and second audio content, an audio output.

公开(公告)号：US20220328057A1

公开(公告)日：2022-10-13

申请号：US17633782

申请日：2020-09-15

Applicant: Google LLC

Inventor： Jae Lee ,  Priya Kasirajan ,  Leng Ooi

IPC: G10L21/0232

Abstract: 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

Applicant: Google LLC

Inventor： Guohua Sun ,  Jae Lee ,  Tiantian Xu

IPC: H04R1/10 ,  G10K11/178

Abstract: 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

Applicant: Google LLC

Inventor： Jae Lee ,  Priya Kasirajan

IPC: H03G3/32 ,  H03G5/16

Abstract: 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

Applicant: Google LLC

Inventor： Jae Lee

IPC: G10L17/00 ,  H04R29/00

Abstract: 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

Applicant: Google LLC

Inventor： Jae Lee

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

Abstract: 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.