Device and method for muffling, communication device and wearable device

Patent metadata

Field	Value
Publication number	US-11539823-B2
Application number	US-201816133413-A
Country	US
Kind code	B2
Filing date	Sep 17, 2018
Priority date	Feb 11, 2018
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A muffling device includes an acquisition circuit, configured to obtain reference sound wave information of a user. The muffling device includes a modulation circuit, configured to analyze an acoustic wave characteristic of the reference sound wave information to obtain a characteristic parameter of the reference sound wave information. The muffling device includes a muffling circuit, configured to generate compensated sound wave information according to the characteristic parameter of the reference sound wave information. The muffling device includes a correction circuit, configured to compare muffed sound wave information superimposed by the compensated sound wave information and the reference sound wave information with the reference sound wave information, and feed back a comparison result to the muffling circuit. The muffling circuit can adjust the compensated sound wave information according to a fed back comparison result. The muffling device includes an output circuit, configured to output adjusted compensated sound wave information.

First claim

What is claimed is:

1. A muffling device comprising:
an acquisition circuit, configured to obtain reference sound wave information of a user;
a modulation circuit, configured to analyze an acoustic wave characteristic of the reference sound wave information to obtain a characteristic parameter of the reference sound wave information;
a muffling circuit, configured to generate compensated sound wave information according to the characteristic parameter of the reference sound wave information, wherein a characteristic parameter of the compensated sound wave information and the characteristic parameter of the reference sound wave information are complementary to each other;
a correction circuit, configured to compare muffed sound wave information superimposed by the compensated sound wave information and the reference sound wave information with the reference sound wave information, and feed back a comparison result to the muffling circuit, wherein the muffling circuit is further configured to adjust the compensated sound wave information according to the fed back comparison result; and
an output circuit, configured to output adjusted compensated sound wave information.

2. The muffling device according to claim 1 , wherein the characteristic parameters comprises a phase, an amplitude, and a frequency, and the complementary comprises opposite phases, same amplitude, and same frequency.

3. The muffling device according to claim 1 , wherein the correction circuit comprises:
a monitoring circuit, configured to compare the muffed sound wave information with the reference sound wave information and monitor in real time whether an amplitude of the muffed sound wave information exceeds a threshold amplitude; and
a correcting circuit, configured to feed back the comparison result to the muffling circuit and transmit a correction command when the amplitude of the muffed sound wave information exceeds the threshold amplitude.

4. The muffling device according to claim 1 , further comprising a voice library, wherein the voice library comprises:
a collecting circuit, configured to input at least one of sound wave information and text information of the user;
a storage circuit, configured to generate a user's voice library according to at least one of recorded sound wave information and text information; and
a learning circuit, configured to optimize the user's voice library according to at least one of the recorded sound wave information and the text information.

5. The muffling device according to claim 1 , wherein the acquisition circuit comprises:
an acquisition circuit, configured to acquire original sound wave information including sound wave information of the user;
an identification circuit, configured to identify the original sound wave information according to a standard sound wave information of the user stored in a voice library to obtain interference sound wave information in the original sound wave information that is different from a voiceprint feature of the standard sound wave information, and the reference sound wave information that is the same as the voiceprint feature of the standard sound wave information; and
a filtering circuit, configured to filter the original sound wave information to eliminate the interference sound wave information and retain the reference sound wave information.

6. A communication device comprising the muffling device according to claim 1 and a voice communication device, wherein the voice communication device is connected to the acquisition circuit of the muffling device.

7. A wearable device comprising the muffling device according to claim 1 .

8. A muffling method comprising:
obtaining reference sound wave information of a user;
analyzing an acoustic wave characteristic of the reference sound wave information to obtain a characteristic parameter of the reference sound wave information;
generating compensated sound wave information according to the characteristic parameter of the reference sound wave information, wherein a characteristic parameter of the compensated sound wave information and the characteristic parameter of the reference sound wave information are complementary to each other;
comparing muffed sound wave information superimposed by the compensated sound wave information and the reference sound wave information with the reference sound wave information, and feeding back a comparison result;
adjusting the compensated sound wave information according to the fed back comparison result; and
outputting adjusted compensated sound wave information.

9. The muffling method according to claim 8 , wherein the characteristic parameters comprises a phase, an amplitude, and a frequency.

10. The muffling method according to claim 8 , wherein comparing muffed sound wave information superimposed by the compensated sound wave information and the reference sound wave information with the reference sound wave information, and feeding back a comparison result comprises:
comparing the muffed sound wave information with the reference sound wave information and monitor in real time whether an amplitude of the muffed sound wave information exceeds a threshold amplitude; and
feeding back the comparison result and transmitting a correction command when the amplitude of the muffed sound wave information exceeds the threshold amplitude.

11. The muffling method according to claim 8 , further comprising:
inputting at least one of sound wave information and text information of the user;
generating a user's voice library according to at least one of recorded sound wave information and text information;
optimizing the user's voice library according to at least one of the recorded sound wave information and the text information, and
wherein the sound wave information and the text information comprise the idiom of the user and confidential information imported by the user.

12. The muffling method according to claim 8 , wherein obtaining reference sound wave information of a user comprises:
acquiring original sound wave information including sound wave information of the user;
identifying the original sound wave information according to a standard sound wave information of the user stored in the user's voice library to obtain interference sound wave information in the original sound wave information that is different from a voiceprint feature of the standard sound wave information, and the reference sound wave information that is the same as the voiceprint feature of the standard sound wave information; and
filtering the original sound wave information to eliminate the interference sound wave information and retain the reference sound wave information.

13. A muffling device comprising:
a processor; and
a non-transitory memory stored with computer readable instructions that, when executed, cause the processor to be configured to perform the muffling method according to claim 8 .

14. The muffling device according to claim 13 , wherein the characteristic parameters comprises a phase, an amplitude, and a frequency.

15. The muffling device according to claim 13 , wherein the comparing muffed sound wave information superimposed by the compensated sound wave information and the reference sound wave information with the reference sound wave information, and feeding back a comparison result comprises:
comparing the muffed sound wave information with the reference sound wave information and monitor in real time whether an amplitude of the muffed sound wave information exceeds a threshold amplitude; and
feeding back a comparison result and transmitting a correction command when

Assignees

• Boe Technology Group Co Ltd
• Fuzhou Boe Optoelectronics Tech Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Yu Yang
• Liao Jiamin
• Luo Shijian
• Luo Tao
• Qiu Heyuan
• Liu Xiaowei
• Li Haiguang
• Chen Fan

Classifications

• H03G1/02

  Remote control of amplification, tone or bandwidth (combined with remote tuning or selection of resonant circuits H03J) · CPC title

• G10K11/17821

  characterised by the analysis of the input signals only · CPC title

• H04M1/19 Primary

  Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor (circuit arrangements for preventing eavesdropping H04M1/68; telephone cabinets E04H1/14) · CPC title

• G10K11/17875

  using an error signal without a reference signal, e.g. pure feedback · CPC title

• G10L15/063

  Training · CPC title