WO2016078233A1

WO2016078233A1 - Recording method and apparatus, and terminal

Info

Publication number: WO2016078233A1
Application number: PCT/CN2015/072447
Authority: WO
Inventors: 王蔚
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-11-17
Filing date: 2015-02-06
Publication date: 2016-05-26
Also published as: CN105679356A; CN105679356B

Abstract

A recording method and apparatus, and a terminal. The method comprises: determining a position of a sound source (S302); according to the position of the sound source, starting a sound collection device on a recording device, wherein the sensitivity of the sound collection device matches the position of the sound source (S304); and using the sound collection device to record a sound sent by the sound source (S306). The problem in the related art that a recording effect is poor when a terminal is used to record is solved, thereby achieving the effect of improving the recording quality.

Description

Recording method, device and terminal

Technical field

The present invention relates to the field of communications, and in particular to a recording method, apparatus, and terminal.

Background technique

At present, smart terminals on the market all have a recording function. The following uses a smartphone to record a microphone as an example. In the related art, generally recorded by a microphone, as shown in FIG. 1, FIG. 1 is a schematic diagram of a single microphone recording according to the related art; or a dual microphone noise reduction recording, as shown in FIG. 2, FIG. 2 is based on A schematic diagram of dual microphone recording in the related art.

Performance indicators such as sensitivity, signal-to-noise ratio, dynamic range, and distortion of the microphone are fixed. The relatively low sensitivity will result in weak pickup ability of the signal. The relatively low signal-to-noise ratio will result in large noise in the sampled signal. The relatively low input sound pressure level will result in saturation distortion of the pickup of large signals, and the dynamic range is relatively high. Low causes the range of the sample size signal to decrease, signals less than the threshold are not sampled, and signals larger than the threshold are clipped.

However, the sensitivity of the microphone is especially important for the pickup of the acoustic signal. The low sensitivity will result in weak pickup of the signal. The size of the sampled signal is very important for the recording quality. A suitable recording level can be selected to achieve a satisfactory recording effect.

The main problems of mobile phone recording are as follows: First, when the distance of the recorded object is too long, the recording signal is too small, which may cause the recorded sound to be unclear; secondly, when the distance of the recorded object is close, the recording signal is too large. It will cause breakage; the third is when the distance from the object being recorded is moderate, but the voice of the recorded object is small, resulting in a small recording signal, which may result in unclear sound; the fourth is when the object being recorded is in a noisy environment (such as a concert, When there is a KTV, a bar or a ball field, there will be a lot of noise. Excessive noise will cause a serious drop in the recording effect. At the same time, if the live recording signal is too large, it may cause breaks and/or noise, which will affect the recording effect.

In view of the problem of poor recording performance when recording with a terminal existing in the related art, an effective solution has not been proposed yet.

Summary of the invention

The embodiment of the invention provides a recording method and device, so as to solve at least the problem that the recording effect is poor when recording with the terminal in the related art.

According to an embodiment of the present invention, a recording method is provided, including: determining a position of a sound source; and starting a sound collection device on the recording device according to the position of the sound source, wherein the sensitivity and the sound collection device Position matching of the sound source; recording the sound emitted by the sound source by using the sound collecting device.

Determining the position of the sound source includes: receiving a sound signal emitted by the sound source; determining a signal strength of the received sound signal; determining a position of the sound source according to the determined signal strength.

The number of the sound collecting devices is two or more, wherein the sound collecting devices have different sensitivities.

Starting the sound collection device on the recording device according to the position of the sound source includes: when the distance from the sound source is greater than the first predetermined distance, selecting a sound collection device having a sensitivity higher than the first predetermined sensitivity; When the distance between the sound sources is less than the second predetermined distance, the sound collecting device having the sensitivity lower than the second predetermined sensitivity is selected, wherein the second predetermined distance is smaller than the first predetermined distance, and the second predetermined sensitivity is low And the first predetermined sensitivity; when the distance from the sound source is greater than the second predetermined distance and less than the first predetermined distance, the selection sensitivity is higher than the second predetermined sensitivity and less than the first A sound collection device of predetermined sensitivity.

The sound collection device is a microphone.

According to another embodiment of the present invention, there is provided a recording apparatus comprising: a determining module configured to determine a position of a sound source; and an activation module configured to activate a sound collecting device on the recording device according to a position of the sound source, The sensitivity of the sound collection device matches the position of the sound source; and the recording module is configured to record the sound emitted by the sound source by using the sound collection device.

The determining module includes: a receiving unit configured to receive a sound signal emitted by the sound source; a first determining unit configured to determine a signal strength of the received sound signal; and a second determining unit configured to determine according to the determined The signal strength determines the location of the sound source.

The activation module includes: a sound collection device that selects a sensitivity higher than a first predetermined sensitivity when a distance from the sound source is greater than a first predetermined distance; when a distance from the sound source is less than a second predetermined At a distance, a sound collection device having a sensitivity lower than a second predetermined sensitivity is selected, wherein the second predetermined distance is less than the first predetermined distance, and the second predetermined sensitivity is lower than the first predetermined sensitivity; Between the sound sources When the distance is greater than the second predetermined distance and less than the first predetermined distance, a sound collection device having a sensitivity higher than the second predetermined sensitivity and smaller than the first predetermined sensitivity is selected.

The sound collection device is a microphone.

According to another embodiment of the present invention, there is provided a terminal comprising the apparatus of any of the above.

The sound collection device on the recording device is activated according to the position of the sound source, wherein the sensitivity of the sound collection device matches the position of the sound source; The sound collecting device records the sound emitted by the sound source, and solves the problem that the recording effect is poor when recording with the terminal in the related art, thereby achieving the effect of improving the recording quality.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of recording a single microphone according to the related art;

2 is a schematic diagram of dual microphone recording according to the related art;

3 is a flow chart of a recording method in accordance with an embodiment of the present invention;

4 is a block diagram showing the structure of a recording apparatus according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a determining module 42 according to an embodiment of the present invention;

6 is a structural block diagram of a terminal according to an embodiment of the present invention;

7 is a schematic diagram of a microphone position according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of manually selecting a microphone for recording according to an embodiment of the present invention; FIG.

9 is a schematic diagram of automatic selection of microphone recordings in accordance with an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In this embodiment, a recording method is provided. FIG. 3 is a flowchart of a recording method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

Step S302, determining a location of the sound source;

Step S304, starting a sound collection device on the recording device according to the position of the sound source, wherein the sensitivity of the sound collection device matches the position of the sound source;

In step S306, the sound emitted by the sound source is recorded by the sound collecting device.

Through the above steps, the sound collection device used according to different positions of the sound source is determined, thereby realizing the sound recording device with different sensitivity to record sounds of different distances, and solving the problem that the recording effect is poor when recording with the terminal in the related art The problem, in turn, achieves the effect of improving the quality of the recording.

In determining the position of the sound source, there may be various methods in which the position of the sound source may be determined by the intensity of the sound signal emitted by the sound source. For example, in an alternative embodiment, the sound may be determined by the following method. Source location: receiving a sound signal from a sound source; determining a signal strength of the received sound signal; determining a position of the sound source based on the determined signal strength.

Since sound collection devices of different sensitivities are used when recording sounds of different distances, the number of sound collection devices can be set to two or more, and different sound collection devices can have different sensitivities.

When the sound is recorded, the sound collection device of different sensitivity may be selected according to the sounds of different distances. In an optional embodiment, when the distance from the sound source is greater than the first predetermined distance, the selection sensitivity is higher than the first a sound collection device of predetermined sensitivity; when the distance from the sound source is less than the second predetermined distance, selecting a sound collection device having a sensitivity lower than the second predetermined sensitivity, wherein the second predetermined distance is smaller than the first predetermined distance, and the second The predetermined sensitivity is lower than the first predetermined sensitivity; when the distance from the sound source is greater than the second predetermined distance and less than the first predetermined distance, the sound collection device having the sensitivity higher than the second predetermined sensitivity and smaller than the first predetermined sensitivity is selected.

In the above embodiments, the sound collecting device may be a microphone.

A recording apparatus is also provided in the embodiment, which is configured to implement the above-described embodiments and preferred embodiments, and the description thereof has been omitted. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

4 is a block diagram showing the structure of a recording apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes a determining module 42, a starting module 44, and a recording module 46, which will be described below.

The determining module 42 is configured to determine the position of the sound source; the starting module 44 is connected to the determining module 42 and configured to start the sound collecting device on the recording device according to the position of the sound source, wherein the sound collecting device has sensitivity and sound source The location is matched; the recording module 46 is coupled to the activation module 44 and configured to record the sound emitted by the sound source using the sound collection device.

FIG. 5 is a structural block diagram of the determining module 42 according to an embodiment of the present invention. As shown in FIG. 5, the determining module 42 includes a receiving unit 52, a first determining unit 54, and a second determining unit 56. Be explained.

The receiving unit 52 is configured to receive the sound signal emitted by the sound source; the first determining unit 54 is connected to the receiving unit 52, and is configured to determine the signal strength of the received sound signal; the second determining unit 56 is connected to the first determining Module 54, is configured to determine the position of the sound source based on the determined signal strength.

The number of sound collection devices may be two or more, and different sound collection devices may have different sensitivity.

When the sound is recorded, the sound collection device of different sensitivity may be selected according to the sounds of different distances. In an optional embodiment, the activation module 44 may include: when the distance from the sound source is greater than the first predetermined distance And selecting a sound collection device having a sensitivity higher than the first predetermined sensitivity; and selecting a sound collection device having a sensitivity lower than the second predetermined sensitivity when the distance from the sound source is less than the second predetermined distance, wherein the second predetermined distance is smaller than the second predetermined distance a predetermined distance, the second predetermined sensitivity being lower than the first predetermined sensitivity; when the distance from the sound source is greater than the second predetermined distance and less than the first predetermined distance, the selection sensitivity is higher than the second predetermined sensitivity and less than the first predetermined sensitivity Sound collection device.

The sound collecting device in the above embodiment may be a microphone.

FIG. 6 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 6, the terminal 62 includes the sound collecting device 64 of any of the above.

Hereinafter, the present invention will be described by taking a case where the sound collecting device is a microphone and the terminal includes three types of microphones. In this embodiment, a multi-microphone selection circuit is provided that includes three microphones of high, medium, and low sensitivity, and different microphones can be selected by switching. When the recording object is far away, you can use the high-sensitivity microphone for recording; when the recording object is at a moderate distance, you can use the medium-sensitivity microphone to record; when the recording object is close, you can use the low-sensitivity microphone to record, thus ensuring the recording power. The level is always maintained in a suitable position. Furthermore, the problem of poor recording quality caused by significant differences in recording signals when the recording distance is different is solved.

FIG. 7 is a schematic diagram of the position of a microphone according to an embodiment of the present invention. The position of the high, medium and low sensitivity microphones on the mobile phone is as shown in FIG. 7.

In the case of performing different sensitivity microphone switching, the user may manually switch, or the terminal may automatically switch. The following two modes are described by using different embodiments:

Embodiment 1

FIG. 8 is a schematic diagram of manually selecting a microphone for recording according to an embodiment of the present invention. As shown in FIG. 8, a multi-microphone selection and recording circuit is provided in this embodiment. The circuit consists of three modules:

Multi-microphone module: It consists of a high-sensitivity microphone, a normal-sensitivity microphone, and a low-sensitivity microphone.

The first selector switch module: consists of an analog switch and a mechanical button on the selection housing.

Sampling recording module (same as above recording module 46): completed by Codec's microphone recording path.

The terminal designed by the circuit can manually switch the switch to select a microphone with different sensitivity for recording. One method is to have a selection item on the UI interface. When recording, the user can select which microphone to use for recording according to the recording environment. The second is that there are mechanical buttons on the mobile phone, and the switch can be switched through the corresponding mechanical buttons.

When the recording object is far away, switch the analog switch to select the high-sensitivity microphone recording; when the recording object is at a moderate distance, switch the analog switch to select the sensitivity microphone recording; when the recording object is close, switch the analog switch to select the low-sensitivity microphone recording. Therefore, the recording level is always maintained at a suitable position, and the problem that the recording quality is poor due to the difference in the recording signal when the recording distance is different is solved.

Embodiment 2

FIG. 9 is a schematic diagram of automatically selecting a microphone recording according to an embodiment of the present invention. As shown in FIG. 9, a multi-microphone selection and recording circuit is provided in this embodiment. The circuit consists of three modules.

The second selection switch module: the switching of the microphone is completed by the Codec control module switch.

The terminal designed with this circuit can automatically switch the switch to select a microphone with different sensitivity for recording. The Codec sends a corresponding control to the selection switch module according to whether the accepted digital signal is higher or lower than a certain range. If the digital signal has exceeded the threshold, the low sensitivity microphone is selected, and if it is lower than the threshold, the high sensitivity microphone is selected.

In the above embodiment, three types of microphones including high, medium, and low sensitivity are selected by switching. When the recording object is far away, use the high-sensitivity microphone to record; when the recording object is at a moderate distance, use the medium-sensitivity microphone to record; when the recording object is close, use the low-sensitivity microphone to record, always maintain the recording level at a suitable level. Position, solve the problem that the recording signal is different when the recording distance is different, resulting in poor recording quality. Of course, in practical applications, other numbers of microphones can also be selected, and microphones with different sensitivities can be selected according to different distances.

Through the above embodiments of the present invention, the problem that the recording quality is poor when the recording distance is different and the recording quality is poor is solved. Thereby, the terminal achieves better recording effect, and improves the recording quality and the satisfaction of the user.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the recording method, device, and terminal provided by the embodiments of the present invention have the following beneficial effects: solving the problem that the recording effect is poor when recording with the terminal in the related art, thereby achieving the improvement of the recording quality. effect.

Claims

A recording method that includes:

Determine the location of the sound source;

A sound collection device on the recording device is activated according to a position of the sound source, wherein a sensitivity of the sound collection device matches a position of the sound source;

The sound emitted by the sound source is recorded by the sound collection device.
The method of claim 1 wherein determining the location of the sound source comprises:

Receiving a sound signal emitted by the sound source;

Determining a signal strength of the received sound signal;

The position of the sound source is determined based on the determined signal strength.
The method of claim 1, wherein the number of sound collection devices is two or more, wherein the sound collection devices have different sensitivities.
The method of claim 3, wherein the actuating the sound collecting device on the recording device according to the position of the sound source comprises:

Selecting a sound collection device having a sensitivity higher than the first predetermined sensitivity when a distance from the sound source is greater than a first predetermined distance;

Selecting a sound collection device having a sensitivity lower than a second predetermined sensitivity when a distance from the sound source is less than a second predetermined distance, wherein the second predetermined distance is smaller than the first predetermined distance, the second The predetermined sensitivity is lower than the first predetermined sensitivity;

When the distance from the sound source is greater than the second predetermined distance and less than the first predetermined distance, a sound collection device having a sensitivity higher than the second predetermined sensitivity and smaller than the first predetermined sensitivity is selected.
The method of any of claims 1 to 4, wherein the sound collection device is a microphone.
A recording device comprising:

Determining a module, setting to determine the location of the sound source;

Activating a module, configured to start a sound collection device on the recording device according to the position of the sound source, wherein a sensitivity of the sound collection device matches a position of the sound source;

And a recording module configured to record the sound emitted by the sound source by using the sound collection device.
The apparatus of claim 6 wherein said determining module comprises:

a receiving unit configured to receive a sound signal emitted by the sound source;

a first determining unit, configured to determine a signal strength of the received sound signal;

And a second determining unit configured to determine a position of the sound source according to the determined signal strength.
The apparatus according to claim 6, wherein the number of the sound collecting devices is two or more, wherein the sound collecting devices have different sensitivities.
The apparatus of claim 8 wherein said activation module comprises:

Selecting a sound collection device having a sensitivity higher than the first predetermined sensitivity when a distance from the sound source is greater than a first predetermined distance;

Selecting a sound collection device having a sensitivity lower than a second predetermined sensitivity when a distance from the sound source is less than a second predetermined distance, wherein the second predetermined distance is smaller than the first predetermined distance, the second The predetermined sensitivity is lower than the first predetermined sensitivity;

When the distance from the sound source is greater than the second predetermined distance and less than the first predetermined distance, a sound collection device having a sensitivity higher than the second predetermined sensitivity and smaller than the first predetermined sensitivity is selected.
Apparatus according to any one of claims 6 to 9, wherein the sound collection device is a microphone.
A terminal comprising the apparatus of any one of claims 6 to 10.