Headset

• US 10,631,078 B2
• Filed: 10/12/2018
• Issued: 04/21/2020
• Est. Priority Date: 06/15/2018
• Status: Active Grant

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: He, Wei-Hung
• Primary Examiner(s): Kim, Paul
• Assistant Examiner(s): Fahnert, Friedrich
• Application Number:
  US16/159,371
• Publication Number:
  US 20190387306A1
• Time in Patent Office: 557 Days
• Field of Search: 381 58, 381 711, 381 716, 381 74, 381313, 381321, 381330
• CPC Class Codes: H04R 1/105 Earpiece supports, e.g. ear hooks for stereophonic headphones H04R5/0335
• CPC Class Codes: H04R 1/1083 Reduction of ambient noise active noise reduction per se G10K11/175; protective devices for the ear, e.g. providing acoustic protection A61F11/06
• CPC Class Codes: H04R 5/0335 Earpiece support, e.g. headbands or neckrests for monophonic headphones H04R1/105
• CPC Class Codes: H04R 5/04 Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments combinations of amplifiers H03F3/68; stereophonic systems H04S

Abstract

A headset includes a first sound receiving circuit, a second sound receiving circuit, an adaptive circuit, a first synthesis circuit, and a second synthesis circuit. The adaptive circuit is configured to: obtain a first direction of arrival and a second direction of arrival according to a first sound signal and a second sound signal; obtain a first conversion function and a second conversion function according to the first direction of arrival and the second direction of arrival; obtain a first feed forward audio signal according to the first conversion function and the first sound signal; and obtain a second feed forward audio signal according to the second conversion function and the second sound signal.

Claims

1. A headset, comprising:

a first sound receiving circuit, configured to;

receive a first sound of a first position, and convert the first sound into a first sound signal;

a second sound receiving circuit, configured to;

receive a second sound of a second position, and convert the second sound into a second sound signal;

an adaptive circuit, configured to;

obtain a first direction of arrival and a second direction of arrival according to the first sound signal and the second sound signal;

obtain a first conversion function and a second conversion function according to the first direction of arrival and the second direction of arrival;

obtain a first feed forward audio signal according to the first conversion function and the first sound signal; and

obtain a second feed forward audio signal according to the second conversion function and the second sound signal, wherein the first conversion function and the second conversion function respectively comprise phase differences and gain values corresponding to different frequencies;

a first synthesis circuit, configured to;

mix a first input audio signal and the first feed forward audio signal, and output a first output audio signal; and

a second synthesis circuit, configured to;

mix a second input audio signal and the second feed forward audio signal, and output a second output audio signal.

2. The headset according to claim 1, wherein the adaptive circuit comprises:

an arrival detection circuit, configured to obtain the first direction of arrival and the second direction of arrival according to the first sound signal and the second sound signal;

a conversion function circuit, configured to obtain the first conversion function and the second conversion function according to the first direction of arrival and the second direction of arrival;

a first feed forward circuit, configured to obtain the first feed forward audio signal according to the first conversion function and the first sound signal; and

a second feed forward circuit, configured to obtain the second feed forward audio signal according to the second conversion function and the second sound signal.

3. The headset according to claim 2, wherein the conversion function circuit comprises a lookup table, and the conversion function circuit searches the lookup table for the corresponding first conversion function and the corresponding second conversion function according to the first direction of arrival and the second direction of arrival.

4. The headset according to claim 1, further comprising:

a wind noise feedback circuit, configured to;

receive the first sound signal and the second sound signal, and output a corresponding wind noise audio signal when determining that a wind noise intensity of the first sound signal and the second sound signal is less than a preset value, wherein

the first synthesis circuit is configured to;

mix the first input audio signal, the first feed forward audio signal, and the wind noise audio signal, and output the first output audio signal; and

the second synthesis circuit is configured to;

mix the second input audio signal, the second feed forward audio signal, and the wind noise audio signal, and output the second output audio signal.

5. The headset according to claim 4, wherein the wind noise feedback circuit comprises:

a wind noise detection circuit, configured to;

receive the first sound signal and the second sound signal, and output a wind noise figure when determining that the wind noise intensity of the first sound signal and the second sound signal is less than the preset value; and

a gain circuit, configured to output the wind noise audio signal according to the wind noise figure.

6. The headset according to claim 1, further comprising:

a wind noise feedback circuit, configured to;

receive the first sound signal and the second sound signal, and output a corresponding wind noise parameter when determining that a wind noise intensity of the first sound signal and the second sound signal is less than a preset value, wherein

the adaptive circuit is configured to;

obtain the first feed forward audio signal according to the first conversion function, the first sound signal, and the wind noise parameter; and

obtain the second feed forward audio signal according to the second conversion function, the second sound signal, and the wind noise parameter.

7. The headset according to claim 6, wherein the adaptive circuit comprises:

an arrival detection circuit, configured to obtain the first direction of arrival and the second direction of arrival according to the first sound signal and the second sound signal;

a conversion function circuit, configured to obtain the first conversion function and the second conversion function according to the first direction of arrival, the second direction of arrival, and the wind noise parameter;

a first feed forward circuit, configured to obtain the first feed forward audio signal according to the first conversion function and the first sound signal; and

a second feed forward circuit, configured to obtain the second feed forward audio signal according to the second conversion function and the second sound signal.

8. The headset according to claim 6, wherein the wind noise feedback circuit comprises:

a wind noise detection circuit, configured to;

receive the first sound signal and the second sound signal, and output a wind noise figure when determining that the wind noise intensity of the first sound signal and the second sound signal is less than the preset value; and

a gain circuit, configured to output the wind noise parameter according to the wind noise figure.

9. The headset according to claim 6, further comprising at least one frequency reduction circuit, configured to reduce a frequency of a first sound signal and a second sound signal;

and the adaptive circuit configured to obtain the first direction of arrival and the second direction of arrival according to the reduced first sound signal and the reduced second sound signal.

10. The headset according to claim 1, further comprising at least one frequency reduction circuit, configured to reduce a frequency of a first sound signal and a second sound signal;

and the adaptive circuit configured to obtain the first direction of arrival and the second direction of arrival according to the reduced first sound signal and the reduced second sound signal.

11. A headset, comprising:

a first sound receiving circuit, configured to;

receive a first sound of a first position, and convert the first sound into a first sound signal;

a second sound receiving circuit, configured to;

receive a second sound of a second position, and convert the second sound into a second sound signal; and

an adaptive circuit, configured to;

obtain a first direction of arrival and a second direction of arrival according to the first sound signal and the second sound signal;

obtain a first conversion function and a second conversion function according to the first direction of arrival and the second direction of arrival;

output a first feed forward audio signal according to the first conversion function and the first sound signal; and

output a second feed forward audio signal according to the second conversion function and the second sound signal, wherein the first conversion function and the second conversion function respectively comprise phase differences and gain values corresponding to different frequencies.