阅读说明：本技术 环绕音响系统及将环绕音响技术应用在电竞座椅的方法 (Surround sound system and method for applying surround sound technology to electronic contest seats ) 是由 杜博仁 张嘉仁 曾凯盟 于 2020-05-22 设计创作，主要内容包括：环绕音响系统包含电竞座椅、环绕音响组和控制单元。针对环绕音响组中扬声器不同配置方式,控制单元依据每一扬声器的收放音距离来决定相对应的播放补偿时间。针对环绕音响组中扬声器不同的远场特性和近场特性,控制单元分别决定相对应的远场增益补偿或近场增益补偿。(The surround sound system comprises a sports seat, a surround sound set and a control unit. Aiming at different configuration modes of the loudspeakers in the surround sound group, the control unit determines corresponding playing compensation time according to the playing distance of each loudspeaker. The control unit determines corresponding far-field gain compensation or near-field gain compensation according to different far-field characteristics and near-field characteristics of the loudspeakers in the surround sound group.)

1. A surround sound system, comprising:

a competitive electric seat;

a surround sound assembly, comprising:

a first speaker disposed at a first location, wherein the electronic contest seat is separated from the first location by a first distance; and

a second speaker disposed at a second location, wherein the second location is a second distance away from the competitive chair; and

a control unit for:

calculating a reference sound power related to a reference distance;

when a first sound signal of a reference frequency emitted by the first loudspeaker enters a far-field range, the first loudspeaker is instructed to transmit the first sound signal at a first sound power, wherein the value of the first sound power is the reference sound power plus a far-field compensation gain, and the value of the far-field compensation gain is in reverse linear change relative to the difference value of the reference distance and the first distance; and is

When a second sound signal of the reference frequency emitted by the second loudspeaker enters a near-field range, the second loudspeaker is instructed to emit the second sound signal at a second sound power, wherein the value of the second sound power is the reference sound power plus a first near-field compensation gain, and the value of the first near-field compensation gain changes nonlinearly according to the difference value between the reference distance and the second distance.

2. The surround sound system of claim 1, wherein the control unit is further configured to:

judging whether the first sound signal enters the far-field range according to the product of the first distance and the reference frequency; and is

And judging whether the second sound signal enters the near-field range or not according to the product of the second distance and the reference frequency.

3. The surround sound system of claim 1, wherein the control unit is further configured to:

adjusting a first playing time point of the first loudspeaker according to the first distance;

adjusting a second playing time point of the second speaker according to the second distance; and is

When the first distance is greater than the second distance, the first playing time point is earlier than the second playing time point.

4. The surround sound system of claim 1, wherein the control unit is further configured to:

when a third sound signal with a first frequency emitted by the first loudspeaker is judged to enter the near-field range, the first loudspeaker is instructed to send the third sound signal with a third sound power;

when determining that a fourth sound signal with a second frequency emitted by the first loudspeaker enters the near-field range, instructing the first loudspeaker to send the fourth sound signal with a fourth sound power;

the value of the third sound power is the reference sound power plus a second near-field compensation gain, and the value of the second near-field compensation gain changes nonlinearly corresponding to the difference value between the reference distance and the first distance;

the value of the fourth acoustic power is the reference acoustic power plus a third near-field compensation gain, and the value of the third near-field compensation gain changes nonlinearly corresponding to the difference between the reference distance and the first distance;

the value of the first frequency is different from the value of the second frequency; and

and the value of the second near-field compensation gain is different from the value of the third near-field compensation gain.

5. The surround sound system of claim 1, wherein the first distance is greater than the second distance and the reference distance is not less than the first distance.

6. A method of applying surround sound technology to a competitive chair, comprising:

arranging a first loudspeaker in a surround sound set at a first position, wherein the electronic contest seat is separated from the first position by a first distance;

arranging a second loudspeaker in the surround sound set at a second position, wherein the electronic contest seat is separated from the second position by a second distance;

calculating a reference sound power related to a reference distance;

when a first sound signal of a reference frequency emitted by the first loudspeaker enters a far-field range, the first loudspeaker sends the first sound signal with a first sound power, wherein the value of the first sound power is the reference sound power plus a far-field compensation gain, and the value of the far-field compensation gain is in reverse linear change with respect to the difference between the reference distance and the first distance; and

when a second sound signal of the reference frequency sent by the second loudspeaker enters a near-field range, the second loudspeaker sends the second sound signal by a second sound power, wherein the value of the second sound power is the reference sound power plus a first near-field compensation gain, and the value of the first near-field compensation gain changes nonlinearly according to the difference value between the reference distance and the second distance.

7. The method of claim 6, further comprising:

judging whether the first sound signal enters the far-field range according to the product of the first distance and the reference frequency; and is

And judging whether the second sound signal enters the near-field range or not according to the product of the second distance and the reference frequency.

8. The method of claim 6, further comprising:

adjusting a first playing time point of the first loudspeaker according to the first distance; and

and adjusting a second playing time point of the second speaker according to the second distance, wherein when the first distance is greater than the second distance, the first playing time point is earlier than the second playing time point.

9. The method of claim 6, further comprising:

when a third sound signal with a first frequency emitted by the first loudspeaker is judged to enter the near-field range, the first loudspeaker sends the third sound signal with a third sound power; and

when it is determined that a fourth sound signal of a second frequency emitted by the first speaker enters the near-field range, the first speaker transmits the fourth sound signal at a fourth sound power, wherein:

the value of the third sound power is the reference sound power plus a second near-field compensation gain, and the value of the second near-field compensation gain changes nonlinearly corresponding to the difference value between the reference distance and the first distance;

the value of the fourth acoustic power is the reference acoustic power plus a third near-field compensation gain, and the value of the third near-field compensation gain changes nonlinearly corresponding to the difference between the reference distance and the first distance;

the value of the first frequency is different from the value of the second frequency; and is

And the value of the second near-field compensation gain is different from the value of the third near-field compensation gain.

10. The method of claim 6, wherein the first distance is greater than the second distance and the reference distance is not less than the first distance.

Technical Field

The present invention relates to a surround sound system and a method for applying a surround sound technology to a seat for electronic contests, and more particularly, to a surround sound system for determining a corresponding play compensation time and a corresponding gain compensation according to a receiving and playing distance of a speaker and a frequency of a sound signal, and a method for applying a surround sound technology to a seat for electronic contests.

Background

Electronic sports (esprts) refer to sports for playing games using electronic games, in which the contents of the games are formed by electronic systems, and the operations of players and teams are implemented through human-machine interaction interfaces. Since electronic systems are the most important base for electronic competitions, hardware (pc/handset/host), peripherals (keyboard/mouse/earphone) and network environment are indispensable. On the other hand, an ergonomic competitive chair can provide a comfortable operating environment for the player.

In the prior art, users of the electronic competition seats need to use earphones to experience the surround sound effect, and discomfort can be caused when the users wear the earphones for a long time. Therefore, there is a need for a surround sound system and a method for applying surround sound technology to a sports seat to provide a more realistic experience.

Disclosure of Invention

The invention provides a surround sound system, which comprises a competitive chair, a surround sound group and a control unit. The surround sound set comprises a first loudspeaker arranged at a first position and a second loudspeaker arranged at a second position, wherein the electronic competition seat is separated from the first position by a first distance and separated from the second position by a second distance. The control unit is used for calculating a reference sound power related to a reference distance; when a first sound signal of a reference frequency emitted by the first loudspeaker enters a far-field range, the first loudspeaker is instructed to transmit the first sound signal at a first sound power, wherein the value of the first sound power is the reference sound power plus a far-field compensation gain, and the value of the far-field compensation gain is in reverse linear change relative to the difference value of the reference distance and the first distance; and when a second sound signal of the reference frequency sent by the second loudspeaker enters a near-field range, the second loudspeaker is indicated to send the second sound signal by a second sound power, wherein the value of the second sound power is the reference sound power plus a first near-field compensation gain, and the value of the first near-field compensation gain changes nonlinearly corresponding to the difference value between the reference distance and the second distance.

The invention also provides a method for applying the surround sound technology to a competitive electric seat, which comprises the steps of arranging a first loudspeaker in a surround sound set at a first position, wherein the competitive electric seat is separated from the first position by a first distance; arranging a second loudspeaker in the surround sound set at a second position, wherein the electronic contest seat is separated from the second position by a second distance; calculating a reference sound power related to a reference distance; when a first sound signal of a reference frequency emitted by the first loudspeaker enters a far-field range, the first loudspeaker sends the first sound signal with a first sound power, wherein the value of the first sound power is the reference sound power plus a far-field compensation gain, and the value of the far-field compensation gain is in reverse linear change with respect to the difference between the reference distance and the first distance; and when a second sound signal of the reference frequency sent by the second loudspeaker enters a near-field range, the second loudspeaker sends the second sound signal by a second sound power, wherein the value of the second sound power is the reference sound power plus a first near-field compensation gain, and the value of the first near-field compensation gain changes nonlinearly according to the difference value between the reference distance and the second distance.

Drawings

Fig. 1 is a functional block diagram of a surround sound system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an implementation of a surround sound system in an embodiment of the invention.

FIG. 3 is a flowchart of a method for operating a surround sound system according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of far-field and near-field characteristics of speakers in a surround sound group in accordance with an embodiment of the present invention.

Fig. 5 is a schematic diagram of a far-field/near-field sound signal compensation manner for a fixed frequency in an embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating a manner of compensating sound signals of different frequencies at a fixed playback distance according to an embodiment of the present invention.

Wherein:

10: a competitive electric seat;

20: a surround sound group;

30: a control unit;

40: a surround sound system;

310-330: a step of;

E₁～E_R: a loudspeaker;

d～d₅: the distance of the radio.

Detailed Description

In the standardIn an indoor surround sound installation configuration, the speakers and the user of each channel are at a fixed reference distance d₀After appropriate signal processing of the channel signals, each loudspeaker can be directly related to the reference distance d₀Reference acoustic power P₀To play sound signals of different frequencies. In the surround sound system according to the embodiment of the present invention, the speakers of each channel may be spaced from the car seat at different distances to provide different far-field characteristics or near-field characteristics, so that the present invention determines the corresponding play compensation time and gain compensation according to the receiving and playing distance of each speaker and the frequency of the sound signal.

Fig. 1 is a functional block diagram of a surround sound system 100 according to an embodiment of the present invention. The surround sound system 100 includes a sports chair 10, a surround sound unit 20, and a control unit 30. The surround sound system 20 includes a plurality of speakers E₁～E_R(R is an integer greater than 1) disposed at various locations around the competitive chair 10 to provide surround sound effects. The control unit 30 may control the sound power (sound power) of the surround sound group 20 according to the configuration of the surround sound group 20 to provide the corresponding auditory effect. The control unit 30 may be located at any suitable location within the surround sound system 100 and the implementation of the control unit 30 is not limiting to the scope of the invention.

Fig. 2 is a schematic diagram of an implementation of the surround sound system 100 in an embodiment of the invention. For illustrative purposes, fig. 2 shows an embodiment when R ═ 5, where E₁Loudspeakers representing a center channel (C) and a low frequency enhancement channel (LFE), E₂Representing the left channel (L) loudspeaker, E₃Representing the right channel (R) loudspeaker, E₄Representing the rear left channel (RL) loudspeaker, E₅Represents the right rear channel (RR) speaker, and d₁～d₅Respectively represent a loudspeaker E₁～E₅Distance of radio (i.e. loudspeaker E)₁～E₅Distance to the user 30 location). However, the number of sounds included in the surround sound group 20 and the arrangement position do not limit the scope of the present invention.

Fig. 3 is a flowchart of a method of operating the surround sound system 100 according to an embodiment of the present invention, which includes the following steps:

step 310: the corresponding playing compensation time is determined according to the pitch and roll distances of each speaker in the surround sound group 20.

Step 320: and determining corresponding far-field gain compensation or near-field gain compensation according to the receiving and playing distance of each loudspeaker and the frequency of the sound signal.

Step 330: the operation of the surround sound set 20 is controlled according to the corresponding playing compensation time of each speaker and the corresponding far-field gain compensation or near-field gain compensation of each speaker to provide the corresponding auditory effect.

In step 310, the control unit 30 adjusts the corresponding playing compensation time according to the pitch distance of each speaker in the surround sound group 20. Similarly, the embodiment shown in fig. 2 is explained, and 5 sets of speakers E are included in the surround sound group 20₁～E₅In, suppose speaker E₁～E₃Distance d of receiving and releasing sound₁～d₃Are all 0.5m, and a loudspeaker E₄～E₅Distance d of receiving and releasing sound₄～d₅Are all 0.1 m. The control unit 30 can be based on a reference distance d₀Calculating the corresponding radio and playback distance d for the reference₁～d₅Playing compensation time t₁～t₅And instructs the speaker E₁～E₅According to playing compensation time t₁～t₅To adjust the playing time points thereof, respectively.

In one embodiment, the distance d is referenced₀May be greater than the distance d₁～d₅For example 2m using a standard indoor surround sound distance configuration. Therefore, the playing compensation time t₁～t₅Are all positive values, wherein 0<t₁＝t₂＝t₃<t₄＝t₅That is, when the sound emission instruction is received by the surround sound group 20, the speaker E₁～E₅Will delay the playing compensation time t respectively₁～t₅The sound signal is emitted and the speaker closer to the user 30 emits the sound signal later. Thus, when the user 30 sits on the electric racing seatWhen the chair 100 is in use, it will feel the loudspeaker E₁～E₅All emit sound signals of the same distance state.

In another embodiment, the reference distance d₀May be a distance d₁～d₅Maximum of (1), e.g. d₀0.5 m. Therefore, the playing compensation time t₁～t₃Is 0, and the compensation time t is played₄～t₅Are all positive values, where 0 ═ t₁＝t₂＝t₃<t₄＝t₅That is, when the sound emission instruction is received by the surround sound group 20, the speaker E₁～E₃Will immediately emit a sound signal, and a loudspeaker E₄～E₅Will delay the playing compensation time t respectively₄～t₅An acoustic signal is emitted. As such, when the user 30 sits on the electronic game seat 100, he or she will experience the speaker E₁～E₅All emit sound signals of the same distance state.

Fig. 4 is a schematic diagram of the far-field and near-field characteristics of the speakers in surround sound group 20 in accordance with an embodiment of the present invention. The vertical axis represents the sound power, and the horizontal axis represents the product of the playback distance (d) and the frequency (f) of the sound signal, that is, the ratio of the playback distance (d) to the wavelength (λ) of the sound signal. As is known to those skilled in the art, the wavelength of an acoustic signal is inversely proportional to frequency, so lower frequencies have longer wavelengths. When a loudspeaker emits an acoustic signal, the shape of its spherical wavefront changes with the length of the path traveled. The longer the playback distance, the less influence the shape of the spherical wavefront of the sound signal has. At a critical distance d_TWhen the difference of the transmission paths does not affect the shape of the spherical wave front any more, the distance is less than the critical distance d_TIs defined as the near field, and is greater than the critical distance d_TThe range of (d) is then defined as the far field. In a far field range, the sound pressure and the receiving and playing distance of the sound signal are changed in an inverse linear way; in the near-field range, sound waves generate interference, so that the sound pressure of a sound signal is out of phase with the particle velocity, and the sound power and the receiving and releasing sound distance of the sound signal change in a non-linear mode.

As shown in fig. 4, for a fixed playback distance, a low-frequency (longer wavelength) sound signal is more likely to enter the near-field range, and a high-frequency (shorter wavelength) sound signal is more likely to enter the far-field range; for a fixed frequency, a sound signal with a shorter receiving and playing distance is more likely to enter the near-field range, and a sound signal with a longer receiving and playing distance is more likely to enter the far-field range. Therefore, the present invention determines the corresponding far-field gain compensation or near-field gain compensation according to the receiving and playing distance of each speaker and the frequency of the audio signal in step 320.

Fig. 5 is a schematic diagram of a far-field/near-field sound signal compensation manner for a fixed frequency in an embodiment of the present invention. The vertical axis represents the sound power, and the horizontal axis represents the product of the playback distance (d) and the frequency (f) of the sound signal, that is, the ratio of the playback distance (d) to the wavelength (λ) of the sound signal. For illustrative purposes, speaker E₁And E₄For example, wherein the loudspeaker E₁Distance d of receiving and releasing sound₁0.5m, speaker E₄Distance d of receiving and releasing sound₄Is 0.1m, and is referenced to a distance d₀2 m. The control unit 30 can first determine the reference distance d₀Reference acoustic power P₀And according to the radio-receiving and playing distance of the loudspeaker and the specific frequency f₀The specific frequency f emitted by each loudspeaker is judged according to the product of the frequency f and the frequency f₀The sound signal of (a) may enter a far-field range or a near-field range. Assume that the microcontroller 14 determines speaker E₁Emitted specific frequency f₀Will enter the far field range (d)₁*f₀>d_TH*f₀) And a loudspeaker E₄Emitted specific frequency f₀The sound signal of (a) will enter the near field range (d)₄*f₀<d_TH*f₀). Then, the control unit 30 of the present invention instructs the speaker E₁At a first acoustic power P₁Transmitting an acoustic signal, wherein a first acoustic power P₁Is a reference acoustic power P₀Adding a far field compensation gain G_FAR(f₀,d₁) And far field compensation gain G_FAR(f₀,d₁) Value of (d)₀-d₁) The value of (c) varies inversely linearly. In the same way, the present inventionThe lighting control unit 30 will instruct the loudspeaker E₄At a second sound power P₂Transmitting an acoustic signal, wherein the second acoustic power P₂Is a reference acoustic power P₀Adding a near field compensation gain G_NEAR(f₀,d₄) And near field compensation gain G_NEAR(f₀,d₄) Value of (d)₀-d₄) The value of (a) varies non-linearly.

Fig. 6 is a schematic diagram illustrating a manner of compensating sound signals of different frequencies at a fixed playback distance according to an embodiment of the present invention. The vertical axis represents the sound power, and the horizontal axis represents the product of the playback distance (d) and the frequency (f) of the sound signal, that is, the ratio of the playback distance (d) to the wavelength (λ) of the sound signal. For illustrative purposes, by radio distance d₄0.1m loudspeaker E₄For example, and reference is made to distance d₀2 m. The control unit 30 of the present invention can first determine the relative reference distance d₀Reference acoustic power P₀And judging whether the sound signals of different frequencies emitted by each loudspeaker enter a far-field range or a near-field range according to the product of the receiving and releasing sound distance and the frequency of the loudspeaker. As mentioned before, the reference distance d₀The sound power of each frequency sound signal is a fixed value due to the distance d between the receiving and the playing₄0.1m loudspeaker E₄Emitted specific frequency f₁And f₂Will enter a near field range, the control unit 30 will instruct the loudspeaker E₄With a third sound power P₃Transmitting frequency f₁Wherein the third sound power P₃Is a reference acoustic power P₀Adding a near field compensation gain G_NEAR1(f₁,d₄) And near field compensation gain G_NEAR1(f₁,d₄) Value of (d)₀-d₄) The value of (a) varies non-linearly. Similarly, the control unit 30 will instruct the speaker E₄With a fourth sound power P₄Transmitting frequency f₄In which the fourth sound power P₄Is a reference acoustic power P₀Adding a near field compensation gain G_NEAR2(f₂,d₄) And near field compensation gain G_NEAR1(f₂,d₄) Value of (d)₀-d₄) The value of (a) varies non-linearly.

To sum up, for different configurations of the speakers in the surround sound group 20, the present invention determines the corresponding compensation time according to the receiving and playing distance of each speaker; for different far-field and near-field characteristics of the speakers in the surround sound group 20, the present invention determines corresponding far-field gain compensation or near-field gain compensation, respectively. Therefore, the electronic contest seat 100 of the present invention can provide a more realistic sound experience under the framework of the indoor surround sound technology.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and all equivalent changes and modifications made by the claims of the present invention should be covered by the scope of the present invention.