# US 2014/0192997 A1 · Sound Collection Method And Electronic Device

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- Number: US 2014/0192997 A1
- Document ID: US20140192997A1
- Status: Published application
- Kind: A1
- Application number: 14/149,245
- Filed: 2014-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-08
- Assignees: Lenovo (Beijing) Limited; Beijing Lenovo Software Ltd.
- Applicants: Lenovo (Beijing) Co., Ltd.; Beijing Lenovo Software Ltd.
- Inventors: Xule Niu; Yanjun Tian
- Web page: https://patentgrep.com/patent/US20140192997A1

## CPC

- H04R 3/005: {for combining the signals of two or more microphones (specially adapted for hearing aids H04R25/407)}
- H04R 1/326: {for microphones (H04R1/34 and H04R1/40 take precedence)}
- H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)

## Abstract

A sound collection method and an electronic device are disclosed. The method is applicable to an electronic device that includes an image acquisition unit and an audio collection unit. The method includes determining a focus object when the image acquisition unit is acquiring images; obtaining a position relationship information between the focus object and the image acquisition unit based on the focus object; obtaining a first direction information based on the position relationship information; and controlling the audio collection unit to collect the sound from a sound source corresponding to the first direction based on the first direction information.

## Claims

### Claim 1

A sound collection method, the method being applicable to an electronic device that includes an image acquisition unit and an audio collection unit, the method comprising:
determining a focus object when the image acquisition unit is acquiring images;
obtaining a position relationship information between the focus object and the image acquisition unit based on the focus object;
obtaining a first direction information based on the position relationship information; and,
controlling the audio collection unit to collect sound from a sound source corresponding to the first direction based on the first direction information.

### Claim 2

The method of claim I, wherein the audio collection unit is a collecting unit that includes a microphone array with M microphones, and M is an integer greater than or equal to 2.

### Claim 3 (depends on 2)

The method of claim 2, wherein, when the sound source corresponding to the first direction is the only sound source, the controlling the audio collection unit to collect sound from a sound source corresponding to the first direction comprises controlling the microphone array with M microphones to collect sound from the only sound source.

### Claim 4 (depends on 2)

The method of claim 2, wherein, when there are N sound sources corresponding to the first direction and N is an integer greater than or equal to 2, the determining the focus object when the image acquisition unit are acquiring images comprises determining a first sound source from N sound sources as the focus object when the image acquisition unit are acquiring images.

### Claim 5 (depends on 4)

The method of claim 4, wherein, the controlling the audio collection unit to collect sound from the sound source corresponding to the first direction comprises:
controlling the microphone array with M microphones to collect sound from N sound sources, so as to obtain N pieces of sound information;
processing the N pieces of sound information based on the focus object, so as to obtain the first sound information corresponding to the focus object; and,
eliminating the sound information in the N pieces of sound information other than the first sound information, based on the first sound information.

### Claim 6 (depends on 5)

The method of claim 5, wherein, the processing the N pieces of sound information based on the focus object so as to obtain the first sound information corresponding to the focus object comprises:
synthesizing M pieces of sub-sound information contained in each of the N pieces of sound information, so as to obtain N sound results corresponding to the N pieces of sound information; and,
matching a first parameter contained in the N sound results with a second parameter corresponding to the focus object, so as to obtain the first sound information corresponding to the focus object.

### Claim 7 (depends on 2)

The method of claim 2, wherein, when there are N sound sources corresponding to the first direction and N is an integer greater than or equal to 2, the determining the focus object when the image acquisition unit are acquiring images comprises determining P sound sources from the N sound sources as the focus objects, when the image acquisition unit are acquiring images, wherein 2≦P≦N.

### Claim 8 (depends on 7)

The method of claim 7, wherein, the controlling the audio collection unit to collect sound from the sound source corresponding to the first direction comprises controlling the microphone array with M microphones to collect sound from P sound sources, so as to obtain P pieces of sound information.

### Claim 9

An electronic device comprising:
an image acquisition unit for determining a focus object when the image acquisition unit is acquiring images;
a first obtaining unit, for obtaining a position relationship information between the focus object and the image acquisition unit based on the focus object;
a second obtaining unit, for obtaining a first direction information based on the position relationship information;
a control unit, for controlling an audio collection unit to collect the sound from a sound source corresponding to the first direction based on the first direction information.

### Claim 10 (depends on 9)

The electronic device of claim 9, wherein, the audio collection unit is a collecting unit which includes a microphone array with M microphones, and M is an integer greater than or equal to 2.

### Claim 11 (depends on 10)

The electronic device of claim 10, wherein, when there are N sound sources corresponding to the first direction and N is an integer greater than or equal to 2, the image acquisition unit determines, when the image acquisition unit are acquiring images, a first sound source from the N sound sources as the focus object.

### Claim 12 (depends on 11)

The electronic device of claim 11, wherein the control unit comprises:
a collecting unit, for controlling the microphone array with M microphones to collect sound from N sound sources, so as to obtain N pieces of sound information;
a processing unit, for processing N pieces of sound information based on the focus object, so as to obtain the first sound information corresponding to the focus object; and
an eliminating unit, for eliminating the sound information in the N pieces of sound information other than the first sound information.

### Claim 13 (depends on 12)

The electronic device of claim 12, wherein, the processing unit comprises:
a calculating unit, for synthesizing M pieces of sub-sound information contained in each of the N pieces of sound information, so as to obtain N sound results corresponding to the N pieces of sound information; and
a matching unit, for matching a first parameter contained in the N sound results with a second parameter corresponding to the focus object, so as to obtain the first sound information corresponding to the focus object.

### Claim 14 (depends on 10)

The electronic device of claim 10, wherein, when there are N sound sources corresponding to the first direction and N is an integer greater than or equal to 2, the image acquisition unit is used to, when the image acquisition unit are acquiring images, determine P sound sources from the N sound sources as the focus objects, 2≦P≦N.

### Claim 15 (depends on 14)

The electronic device of claim 14, wherein, the control unit is used to control the microphone array with M microphones to collect sound from P sound source, so as to obtain P pieces of sound information.