CN113709631B - Surround sound system and method for applying surround sound technology to electronic contest seats - Google Patents

Surround sound system and method for applying surround sound technology to electronic contest seats Download PDF

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Publication number
CN113709631B
CN113709631B CN202010440632.5A CN202010440632A CN113709631B CN 113709631 B CN113709631 B CN 113709631B CN 202010440632 A CN202010440632 A CN 202010440632A CN 113709631 B CN113709631 B CN 113709631B
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distance
sound
value
loudspeaker
compensation gain
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CN113709631A (en
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杜博仁
张嘉仁
曾凯盟
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Acer Inc
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Acer Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H04R5/023—Spatial or constructional arrangements of loudspeakers in a chair, pillow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—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

Abstract

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.

Description

Surround sound system and method for applying surround sound technology to electronic contest seats
Technical Field
The present invention relates to a surround sound system and a method for applying a surround sound technology to a racing seat, and more particularly, to a surround sound system for determining a corresponding play compensation time and a corresponding gain compensation according to a pitch distance of a speaker and a frequency of a sound signal, and a method for applying a surround sound technology to a racing seat.
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 primary foundation of electronic competition, hardware (pc/handset/host), peripheral devices (keyboard/mouse/headset) 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 to 330: a step of;
E 1 ～E R : a loudspeaker;
d～d 5 : the distance of the radio.
Detailed Description
In a standard indoor surround sound facility configuration, the speakers and the user of each channel are at a fixed reference distance d 0 After appropriate signal processing of the channel signals, each loudspeaker can be directly related to the reference distance d 0 Reference sound power P 0 To 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 E 1 ～E R (R is an integer greater than 1), disposed at various locations around the electronic competition seat 10 to provideFor 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 illustration purposes, fig. 2 shows an embodiment when R =5, where E 1 Loudspeakers representing a center channel (C) and a low frequency enhancement channel (LFE), E 2 Representing the left channel (L) loudspeaker, E 3 Representing the right channel (R) loudspeaker, E 4 Representing the left rear channel (RL) loudspeaker, E 5 Represents the right rear channel (RR) speaker, and d 1 ～d 5 Respectively represent a loudspeaker E 1 ～E 5 Distance of receiving and releasing sound (i.e. loudspeaker E) 1 ～E 5 Distance 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 described, in which 5 sets of speakers E are included in the surround sound group 20 1 ～E 5 In, suppose speaker E 1 ～E 3 Is received and releasedDistance d of sound 1 ～d 3 Are all 0.5m, and a loudspeaker E 4 ～E 5 Distance d of receiving and releasing sound 4 ～d 5 Are all 0.1m. The control unit 30 can be based on a reference distance d 0 Calculating the corresponding radio and playback distance d for the reference 1 ～d 5 Playing compensation time t 1 ～t 5 And indicates the speaker E 1 ～E 5 According to the playing compensation time t 1 ～t 5 To adjust the playing time points thereof, respectively.
In one embodiment, the distance d is referenced 0 May be greater than the distance d 1 ～d 5 For example 2m using a standard indoor surround sound distance configuration. Therefore, the playing compensation time t 1 ～t 5 Are all positive values, wherein 0<t 1 ＝t 2 ＝t 3 <t 4 ＝t 5 That is, when the sound emission instruction is received by the surround sound group 20, the speaker E 1 ～E 5 Will delay the playing compensation time t respectively 1 ～t 5 The sound signal is emitted and the speaker closer to the user 30 emits the sound signal later. As such, when the user 30 sits on the electronic game seat 100, he or she will experience the speaker E 1 ～E 5 All emit sound signals of the same distance state.
In another embodiment, the reference distance d 0 May be a distance d 1 ～d 5 Maximum of (1), e.g. d 0 =0.5m. Therefore, the playing compensation time t 1 ～t 3 0, and playing the compensation time t 4 ～t 5 Are all positive values, of which 0=t 1 ＝t 2 ＝t 3 <t 4 ＝t 5 That is, when the sound emission instruction is received by the surround sound group 20, the speaker E 1 ～E 3 Will immediately emit a sound signal, and a loudspeaker E 4 ～E 5 Will delay the playing compensation time t respectively 4 ～t 5 An acoustic signal is emitted. As such, when the user 30 sits on the electronic game seat 100, he or she will experience the speaker E 1 ～E 5 All emit sound signals of the same distance state.
Figure 4 is the bookEmbodiments of the invention are schematic diagrams of far field and near field characteristics of the speakers in the surround sound group 20. The vertical axis represents the sound power, and the horizontal axis represents the product of the sound receiving and playing distance (d) and the frequency (f) of the sound signal, that is, the ratio of the sound receiving and playing distance (d) to the wavelength (lambda) 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 is exerted on the shape of the spherical wavefront of the sound signal. At a critical distance d T When 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 T Is defined as the near field, and is greater than the critical distance d T The range of (d) is then defined as the far field. In a far field range, the sound pressure and the pitch distance of the sound signal are in reverse linear change; 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 E 1 And E 4 Example, wherein the loudspeaker E 1 Distance d of receiving and releasing sound 1 0.5m, speaker E 4 Receive and release soundDistance d 4 Is 0.1m, and is referenced to a distance d 0 =2m. The control unit 30 can first determine the reference distance d 0 Reference acoustic power P 0 And according to the radio-receiving and playing distance of the loudspeaker and the specific frequency f 0 The specific frequency f emitted by each loudspeaker is judged according to the product of the frequency f and the frequency f 0 The sound signal of (a) may enter a far-field range or a near-field range. Assume that the microcontroller 14 determines speaker E 1 Emitted specific frequency f 0 Will enter the far field range (d) 1 *f 0 >d TH *f 0 ) And a loudspeaker E 4 Emitted specific frequency f 0 The sound signal of (a) will enter the near field range (d) 4 *f 0 <d TH *f 0 ). Then, the control unit 30 of the present invention instructs the speaker E 1 At a first acoustic power P 1 Transmitting an acoustic signal, wherein a first acoustic power P 1 Is a reference acoustic power P 0 Adding a far field compensation gain G FAR (f 0 ,d 1 ) And far field compensation gain G FAR (f 0 ,d 1 ) Value of (d) and 0 -d 1 ) The value of (c) varies inversely linearly. Similarly, the control unit 30 of the present invention will instruct the speaker E 4 At a second sound power P 2 Transmitting an acoustic signal, wherein the second acoustic power P 2 Is a reference acoustic power P 0 Adding a near field compensation gain G NEAR (f 0 ,d 4 ) And near field compensation gain G NEAR (f 0 ,d 4 ) Value of (d) 0 -d 4 ) 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 d 4 0.1m loudspeaker E 4 For example, and reference is made to distance d 0 =2m. The control unit 30 of the present invention can first determine the relative reference distance d 0 Reference acoustic power P 0 And according to the pitch of the loudspeakerThe product of the distances and the frequencies is used to determine whether each speaker emits sound signals of different frequencies into the far-field range or the near-field range. As mentioned before, the reference distance d 0 The sound power of each frequency sound signal is a fixed value due to the distance d between the receiving and the playing 4 0.1m loudspeaker E 4 Emitted specific frequency f 1 And f 2 Will enter a near field range, the control unit 30 will instruct the loudspeaker E 4 With a third sound power P 3 Transmitting frequency f 1 Wherein the third sound power P 3 Is a reference acoustic power P 0 Adding a near field compensation gain G NEAR1 (f 1 ,d 4 ) And near field compensation gain G NEAR1 (f 1 ,d 4 ) Value of (d) 0 -d 4 ) The value of (a) varies non-linearly. Similarly, the control unit 30 will instruct the speaker E 4 With a fourth sound power P 4 Transmitting frequency f 4 Of the sound signal of (2), wherein the fourth sound power P 4 Is a reference acoustic power P 0 Adding a near field compensation gain G NEAR2 (f 2 ,d 4 ) And near field compensation gain G NEAR1 (f 2 ,d 4 ) Value of (d) 0 -d 4 ) The value of (a) varies non-linearly.
To sum up, for different configurations of the speakers in the surround sound unit 20, the present invention determines the corresponding compensation time according to the sound receiving and releasing distance of each speaker; the present invention determines the corresponding far-field gain compensation or near-field gain compensation for the different far-field and near-field characteristics of the speakers in the surround sound group 20. 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.

Claims (8)

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 competitive chair and the second location are separated by a second distance; and
a control unit for:
calculating a reference sound power related to a reference distance;
when determining that a first sound signal of a reference frequency emitted by the first loudspeaker enters a far-field range, instructing the first loudspeaker to transmit the first sound signal with a first sound power, wherein,
judging whether the first sound signal enters the far-field range according to the product of the first distance and the reference frequency; and
the value of the first acoustic power is the reference acoustic power plus a far-field compensation gain when the first distance is less than the reference distance; and is provided with
When the first distance is larger than the reference distance, the value of the first sound power is the reference sound power minus a far-field compensation gain; and
the value of the far-field compensation gain changes in a positive linear way corresponding to the difference between 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 send the second sound signal at a second sound power, wherein,
judging whether the second sound signal enters the near-field range according to the product of the second distance and the reference frequency; and
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 varies non-linearly with respect to a difference between the reference distance and the second distance.
2. 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.
3. 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.
4. 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.
5. A method of applying surround sound technology to a sports seat, comprising:
arranging a first loudspeaker in a surround sound set at a first position, wherein the electronic competition 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,
judging whether the first sound signal enters the far-field range according to the product of the first distance and the reference frequency; and
the value of the first acoustic power is the reference acoustic power plus a far-field compensation gain when the first distance is less than the reference distance; and is
The value of the first acoustic power is the reference acoustic power plus a far-field compensation gain when the first distance is greater than the reference distance; and
the value of the far-field compensation gain changes in a positive linear way corresponding to the difference between the reference distance and the first distance; and
when a second sound signal of the reference frequency emitted by the second speaker is determined to enter a near-field range, the second speaker transmits the second sound signal with a second sound power, wherein,
judging whether the second sound signal enters the near-field range according to the product of the second distance and the reference frequency; and
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 varies non-linearly with respect to a difference between the reference distance and the second distance.
6. The method of claim 5, 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.
7. The method of claim 5, 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 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 according 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.
8. The method of claim 5, wherein the first distance is greater than the second distance and the reference distance is not less than the first distance.
CN202010440632.5A 2020-05-22 2020-05-22 Surround sound system and method for applying surround sound technology to electronic contest seats Active CN113709631B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1426267A (en) * 1995-07-28 2003-06-25 Srs实验室公司 Acoustic correction equipment
JP2017022498A (en) * 2015-07-08 2017-01-26 キヤノン株式会社 Signal processing apparatus and method
CN106686520A (en) * 2017-01-03 2017-05-17 南京地平线机器人技术有限公司 Multi-channel audio system capable of tracking user and equipment with multi-channel audio system
CN108091330A (en) * 2017-12-13 2018-05-29 北京小米移动软件有限公司 Output sound intensity adjusting method, device, electronic equipment and storage medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1426267A (en) * 1995-07-28 2003-06-25 Srs实验室公司 Acoustic correction equipment
JP2017022498A (en) * 2015-07-08 2017-01-26 キヤノン株式会社 Signal processing apparatus and method
CN106686520A (en) * 2017-01-03 2017-05-17 南京地平线机器人技术有限公司 Multi-channel audio system capable of tracking user and equipment with multi-channel audio system
CN108091330A (en) * 2017-12-13 2018-05-29 北京小米移动软件有限公司 Output sound intensity adjusting method, device, electronic equipment and storage medium

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