A sound amplification system control method, intelligent terminal and storage medium

Abstract

The application relates to a sound amplification system control method, an intelligent terminal and a storage medium, and belongs to the field of acoustic control. The method comprises the following steps: acquiring a horizontal coverage angle of a to-be-tested sound box of the sound amplification system; acquiring room information of a target room; acquiring an auditory distance between a listener in the target room and the to-be-tested sound box; calculating an installation quantity of the to-be-tested sound box based on the auditory distance, the room information and the horizontal coverage angle; measuring a reverberation time of the to-be-tested sound box in the target room based on a microphone of the sound amplification system; judging whether the reverberation time is located in a preset standard reverberation time range; and if not, issuing prompt information for increasing a sound absorption coefficient of sound absorption material in the target room. The application has the effect of effectively reducing the probability of poor sound amplification effect of the sound amplification system caused by personnel experience in installing sound compensation boxes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of acoustic control, in particular to a sound amplification system control method, an intelligent terminal and a storage medium. BACKGROUND

[0002] The sound amplification system, as the name implies, refers to a system for amplifying sound in indoor places such as conference rooms, theaters, etc. The sound amplification system mainly consists of power amplifiers, sound boxes, microphones, mixing consoles and sound processing equipment, etc.

[0003] In places such as conference rooms or theaters where sound amplification systems are used, there are usually auditoriums and stage lips. The main sound amplification boxes of the sound amplification system are usually arranged at the corners of the stage lips or on the side walls around the room, to provide surround sound. In practical applications, there are areas in the place where the sound range of the main sound amplification boxes cannot reach. At this time, in order to make the sound amplification in the place uniform and achieve the effect of balanced sound field in the place, several sound compensation boxes are usually added above the stage lip.

[0004] In the prior art, the several sound compensation boxes added above the stage lip are usually arranged horizontally, and when installing the sound compensation boxes, the installer determines the number of sound compensation boxes according to experience. However, the experience of the installer is often not referenceable, which leads to a long reverberation time in the conference room or theater after installing the sound compensation boxes, and further causes the sound amplified by the sound amplification system to be distorted and blurred, affecting the sound amplification effect of the sound amplification system. Therefore, the applicant believes that the existing method of installing sound compensation boxes according to personnel experience usually affects the sound amplification effect of the sound amplification system. SUMMARY

[0005] In order to effectively reduce the probability of poor sound amplification effect of the sound amplification system caused by personnel experience in installing sound compensation boxes, the present application provides a sound amplification system control method, an intelligent terminal and a storage medium.

[0006] In a first aspect, the present application provides a sound amplification system control method using the following technical solution:

[0007] A sound amplification system control method, comprising:

[0008] Obtaining the horizontal coverage angle of the to-be-tested sound box of the sound amplification system;

[0009] Obtaining the room information of the target room;

[0010] Obtaining the auditory distance between the audience in the target room and the to-be-tested sound box;

[0011] based on the hearing distance, the room information and the horizontal coverage angle, the installation quantity of the to-be-tested sound box is calculated; based on the microphone of the sound amplification system, the reverberation time of the to-be-tested sound box in the target room is measured;

[0012] it is judged whether the reverberation time is in a preset standard reverberation time range;

[0013] if not, a prompt information of increasing the sound absorption coefficient of the sound absorption material in the target room is sent out.

[0014] By adopting the above technical scheme, when installing the supplementary sound box, the installation quantity of the to-be-tested sound box is determined by correcting the horizontal coverage angle of the sound box, the hearing distance between the listener and the to-be-tested sound box and the room information, so as to effectively avoid the participation of personnel. At the same time, the reverberation time after installing the supplementary sound box is compared with the standard reverberation time range, and when the reverberation time is not in the standard reverberation time range, a prompt information is sent out, so as to effectively reduce the probability of poor sound amplification effect of the sound amplification system caused by the installation of the supplementary sound box by personnel experience.

[0015] Optionally, the to-be-tested sound boxes are all horizontally placed and located on the same horizontal line; the room information includes a target length of a wall for installing the to-be-tested sound boxes;

[0016] the installation quantity of the to-be-tested sound box is calculated based on the hearing distance, the room information and the horizontal coverage angle, including:

[0017] a target sector is drawn with each to-be-tested sound box as the center and the hearing distance as the radius;

[0018] based on the horizontal coverage angle and the hearing distance, a target chord length corresponding to the horizontal coverage angle in the target sector is calculated through a preset chord length formula; the distance between the nth to-be-tested sound box and the n+1th to-be-tested sound box is the target chord length, and the n is a positive integer greater than 0;

[0019] the chord length formula is:

[0020]

[0021] the L is the target chord length, the R is the hearing distance, and the a is the horizontal coverage angle;

[0022] the target length is divided by the target chord length to obtain a target result;

[0023] the target result is rounded to obtain the installation quantity.

[0024] By adopting the technical scheme, the target chord length is determined according to the horizontal coverage angle and the hearing distance of the to-be-measured sound box, and the installation quantity is obtained according to the target length and the target chord length, so that the installation quantity of the supplementary sound box is determined without the participation of personnel, thereby effectively reducing the probability of poor sound amplification effect of the sound amplification system caused by the installation of the supplementary sound box by personnel.

[0025] Optionally, the to-be-measured sound box includes an edge sound box closest to a target wall distance of a wall perpendicular to the wall where the to-be-measured sound box is located.

[0026] After the target result is rounded to obtain the installation quantity, the method further includes:

[0027] The target result is subtracted by the installation quantity to obtain a target decimal;

[0028] It is judged whether the target decimal is less than a preset decimal threshold;

[0029] If yes, the installation quantity is reduced by one to obtain a final installation quantity of the to-be-measured sound box.

[0030] The target distance between the edge sound box and the target wall is determined based on the final installation quantity and the target length. By adopting the technical scheme, if the supplementary sound box is close to the wall, the wall will reflect the sound emitted by the supplementary sound box, thereby affecting the sound amplification effect. Therefore, the installation quantity of the to-be-measured sound box is further optimized by the target decimal, so that the influence of the supplementary sound box on the sound amplification effect of the sound amplification system is reduced after the installation of the supplementary sound box.

[0031] Optionally, the target distance between the edge sound box and the target wall is determined based on the final installation quantity and the target length, and includes:

[0032] The final installation quantity is reduced by one to obtain a target quantity, and the target quantity is multiplied by the target chord length to obtain a final length; the target length and the final length are substituted into a preset distance formula to obtain the target distance.

[0033] The distance formula is:

[0034]

[0035] The m is the target distance, the Lm is the target length, and the Ln is the final length.

[0036] By adopting the technical scheme, after the installation quantity of the to-be-measured sound box is determined, the target distance between the edge sound box of the to-be-measured sound box and the target wall is further optimized, that is, the target distance between the edge sound box and the target wall is adjusted by the installation quantity, the target chord length and the target length, thereby effectively reducing the probability of poor sound amplification effect of the sound amplification system caused by the supplementary sound box.

[0037] Optionally, the loudspeaker of the sound amplification system is configured to measure the reverberation time of the sound box to be tested in the target room, comprising:

[0038] The sound waves emitted by the sound box to be tested are acquired based on the loudspeaker, and the sound waves are analyzed based on a preset acoustic analysis instrument to obtain an analysis result.

[0039] The reverberation time is obtained based on the analysis result.

[0040] By using the above technical solution, after the sound box is installed, the reverberation time is obtained based on the acoustic analysis instrument, so that whether the reverberation time after the sound box is installed is within the standard reverberation time range can be determined through the reverberation time.

[0041] Optionally, the room information includes a current average sound absorption coefficient of a building material in the target room, a room volume of the target room, and a total surface area of the target room.

[0042] After the prompt information for increasing the sound absorption coefficient of the sound absorption material in the target room is emitted, comprising:

[0043] The minimum reverberation time and the maximum reverberation time are obtained based on the standard reverberation time range.

[0044] The minimum reverberation time, the current average sound absorption coefficient, the room volume, and the total surface area are substituted into a preset sound absorption coefficient calculation formula to obtain a first average sound absorption coefficient.

[0045] The maximum reverberation time, the current average sound absorption coefficient, the room volume, and the total surface area are substituted into a preset sound absorption coefficient calculation formula to obtain a second average sound absorption coefficient.

[0046] The first average sound absorption coefficient and the second average sound absorption coefficient are displayed.

[0047] The sound absorption coefficient calculation formula is:

[0048]

[0049] The A is the average sound absorption coefficient, the V is the room volume, the S is the total surface area, the T is the reverberation time, and the a is the current average sound absorption coefficient.

[0050] By using the above technical solution, the first average sound absorption coefficient and the second average sound absorption coefficient are obtained according to the maximum reverberation time, the minimum reverberation time, and the preset sound absorption coefficient calculation formula, and are displayed, so that whether the average sound absorption coefficient of the sound absorption material in the room is located between the first average sound absorption coefficient and the second average sound absorption coefficient can be directly observed.

[0051] Optionally, after the first average absorption coefficient and the second average absorption coefficient are displayed, the method comprises:

[0052] In a preset sound absorption material database, it is determined whether a first sound absorption material having a sound absorption coefficient within the first average absorption coefficient and the second average absorption coefficient is stored;

[0053] If the first sound absorption material is stored, matching information is outputted;

[0054] If the first sound absorption material is not stored, a sound absorption material is matched, and a preset number of second matching information is generated, so that the average sound absorption coefficients of some sound absorption materials in the matching information are within the first average absorption coefficient and the second average absorption coefficient.

[0055] By using the above technical solution, after the first average absorption coefficient and the second average absorption coefficient are obtained, the sound absorption material in the room is further improved, so that the reverberation time in the room can be reduced as much as possible according to the sound absorption material in the room, and the probability of poor sound expansion effect of the sound expansion system caused by the installation of sound compensation boxes by personnel experience is effectively reduced.

[0056] In a second aspect, the intelligent terminal provided by the present application adopts the following technical solution:

[0057] An intelligent terminal comprises a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor loads and executes the computer program, the above-mentioned sound expansion system control method is adopted.

[0058] By using the above technical solution, the above-mentioned sound expansion system control method is used to generate a computer program, which is stored in the memory to be loaded and executed by the processor, so that the intelligent terminal is made according to the memory and the processor, and is convenient to use.

[0059] In a third aspect, the computer readable storage medium provided by the present application adopts the following technical solution:

[0060] A computer readable storage medium, the computer readable storage medium stores a computer program, and when the computer program is loaded and executed by a processor, the above-mentioned sound expansion system control method is adopted.

[0061] By using the above technical solution, the above-mentioned sound expansion system control method is used to generate a computer program, which is stored in the computer readable storage medium to be loaded and executed by the processor, and the computer readable storage medium is convenient for reading and storing the computer program.

[0062] In summary, the present application has at least one of the following beneficial technical effects:

[0063] 1. In the installation of the sound box, by correcting the horizontal coverage angle of the sound box, the listening distance of the audience and the room information of the sound box to be measured, the installation quantity of the sound box to be measured is determined, thereby effectively avoiding the participation of personnel, and comparing the reverberation time after the installation of the sound box with the standard reverberation time range, and issuing a prompt information when the reverberation time is not within the standard reverberation time range, thereby effectively reducing the probability of poor sound expansion effect of the sound expansion system caused by the installation of the sound box by personnel experience.

[0064] 2. Since the sound emitted by the supplementary sound box will be reflected by the wall when the supplementary sound box is close to the wall, thereby affecting the sound expansion effect, the installation quantity of the sound box to be measured is further optimized by the target small number, so that after the installation of the supplementary sound box, the influence of the supplementary sound box on the sound expansion effect of the sound expansion system is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0065] Figure 1 is a flowchart of one of the embodiments of the sound expansion system control method of the present application.

[0066] Figure 2 is a flowchart of one of the embodiments of the sound expansion system control method of the present application.

[0067] Figure 3 is a flowchart of one of the embodiments of the sound expansion system control method of the present application.

[0068] Figure 4 is a flowchart of one of the embodiments of the sound expansion system control method of the present application.

[0069] Figure 5 is a flowchart of one of the embodiments of the sound expansion system control method of the present application.

[0070] Figure 6 is a flowchart of one of the embodiments of the sound expansion system control method of the present application.

[0071] Figure 7 is a flowchart of one of the embodiments of the sound expansion system control method of the present application. DETAILED DESCRIPTION

[0072] The following will be described in detail in combination with the accompanying drawings Figures 1 to 7 The present application will be further described in detail.

[0073] The present application discloses a sound expansion system control method.

[0074] Reference Figure 1A sound amplification system control method comprises the following steps:

[0075] S101, obtaining a horizontal coverage angle of a to-be-tested sound box of a sound amplification system.

[0076] The horizontal coverage angle refers to the horizontal coverage range of sound, which is usually represented by an angle, for example, the horizontal coverage angle of the to-be-tested sound box is 90 degrees, that is, the horizontal coverage range of the to-be-tested sound box is a fan-shaped region with a range of 90 degrees, and the fan-shaped region is horizontally arranged. The horizontal coverage angles of different sound boxes can be different and can be obtained through the factory information of the sound box. In an embodiment, the horizontal coverage angle of the to-be-tested sound box of the sound amplification system is obtained through a preset sound box factory database, and in another embodiment, the horizontal coverage angle of the to-be-tested sound box of the sound amplification system is obtained through manual input.

[0077] In a specific implementation, the factory information of the to-be-tested sound box usually has 90 degrees x 60 degrees marked therein, wherein 90 degrees refers to the horizontal coverage angle, and 60 degrees refers to the vertical coverage angle. The vertical coverage angle is similar to the horizontal coverage angle and refers to the vertical coverage range of the to-be-tested sound box.

[0078] S102, obtaining room information of a target room.

[0079] The room information refers to a plurality of parameters for indicating the room size and the building materials in the target room. In the present embodiment, the room information comprises the current average sound absorption coefficient of the building materials in the target room, the room volume of the target room, and the total surface area of the target room. Specifically, the room information is obtained through a pre-set room information database.

[0080] S103, obtaining an auditory distance between a listener and the to-be-tested sound box in the target room.

[0081] Since in a specific implementation, in a conference room, a theater, or the like, a stage and a listener seat are included, and the listener seat is at a certain distance from the stage, the auditory distance in the present embodiment refers to the distance between the to-be-tested sound box installed above the lip of the stage and the surface on which the first row of the listener seat is located, that is, the distance between the listener and the to-be-tested sound box.

[0082] S104, calculating the installation quantity of the to-be-tested sound box based on the auditory distance, the room information, and the horizontal coverage angle.

[0083] In the present embodiment, the installation quantity of the to-be-tested sound box is calculated based on the auditory distance, the room information, and the horizontal coverage angle. Specifically, the length of the wall on which the to-be-tested sound box is installed is obtained according to the room information, and then a fan-shaped region is drawn with the to-be-tested sound box as the center and the auditory distance as the radius, and the chord length of the fan-shaped region is calculated based on the horizontal coverage angle of the to-be-tested sound box, that is, the chord length is the distance between the to-be-tested sound box and the surrounding to-be-tested sound boxes. The installation quantity of the to-be-tested sound box can be obtained by knowing the distance between the to-be-tested sound boxes and the length of the wall.

[0084] It should be noted that in this embodiment, the horizontal coverage angles of all the to-be-tested sound boxes are consistent.

[0085] S105, based on the microphone of the sound amplification system, the reverberation time of the to-be-tested sound box in the target room is measured.

[0086] The microphone is used to receive the sound signal emitted by the sound box and convert the sound signal into an electric signal, also known as a microphone, a microphone, etc. Reverberation is a natural phenomenon of indoor sound. When the sound source in the room continuously sounds, when the sound energy absorbed in the room is equal to the sound energy emitted, the sound source is turned off, and there is still a residual sound in the room. This phenomenon is called reverberation. The reverberation time refers to the time required for the residual sound energy to be attenuated by absorption and reflection in the room, and the sound energy density is reduced to one ten-thousandth of the original value.

[0087] In an embodiment, the reverberation time of the to-be-tested sound box in the target room can be obtained based on the room information and the pre-set reverberation time formula, the room information includes the room volume of the target room, the room surface area of the target room and the average sound absorption coefficient of the building materials in the room, and the reverberation time formula is as follows:

[0088] Wherein, T is the reverberation time, V is the room volume, unit is cubic meter, δ is the average sound absorption coefficient, S is the total room surface area, unit is square meter;

[0089] Given the room volume, the average sound absorption coefficient and the total room surface area, the reverberation time can be calculated.

[0090] In another embodiment, the reverberation time of the to-be-tested sound box in the target room can be obtained according to the pre-set acoustic analysis measuring instrument, and the acoustic analysis measuring instrument is used to measure the reverberation time.

[0091] S106, determine whether the reverberation time is within the preset standard reverberation time range.

[0092] If the conference room, theater and other places are not affected by the sound amplification effect after the installation of the to-be-tested sound box, it is determined whether the reverberation time is within the standard reverberation time range after the installation of the to-be-tested sound box. If the reverberation time is within the standard reverberation time range, it indicates that the reverberation time will not affect the sound amplification effect after the installation of the to-be-tested sound box. If the reverberation time is not within the reverberation time range, it indicates that the sound amplification effect is affected, which will lead to long reverberation time, unclear sound and other phenomena.

[0093] S107, if not, issue a prompt information to increase the sound absorption coefficient of the sound absorption material in the target room.

[0094] If the reverberation time is not in the standard reverberation time range, a prompt information of increasing the sound absorption coefficient of the sound absorption material in the target room is sent, that is, the sound absorption coefficient is increased by the sound absorption material to reduce the probability of poor sound amplification effect; if the reverberation time is in the standard reverberation time range, no action is taken.

[0095] The implementation principle of the embodiment is that when installing the sound compensation speaker, the installation quantity of the sound compensation speaker is determined by correcting the horizontal coverage angle of the sound compensation speaker, the auditory distance between the listener and the sound compensation speaker, and the room information, so as to effectively avoid the participation of personnel, and the reverberation time after the sound compensation speaker is installed is compared with the standard reverberation time range, and a prompt information is sent when the reverberation time is not in the standard reverberation time range, so as to effectively reduce the probability of poor sound amplification effect of the sound amplification system caused by the installation of the sound compensation speaker by personnel experience.

[0096] In Figure 1 In step S104 of the embodiment shown in the figure, the distance between each sound compensation speaker is first calculated by the auditory distance and the horizontal coverage angle, and then the installation quantity of the sound compensation speaker is calculated based on the room information and the distance between each sound compensation speaker. The specific calculation process is described in detail through the embodiment shown in the figure. Figure 2

[0097] Referring to Figure 2 , the sound compensation speakers are all placed horizontally and located on the same horizontal line; the room information includes the target length of the wall for installing the sound compensation speakers;

[0098] Based on the auditory distance, the room information and the horizontal coverage angle, the installation quantity of the sound compensation speaker is calculated, including the following steps: S201, taking each sound compensation speaker as the center and the auditory distance as the radius, a target sector is drawn.

[0099] Since the horizontal coverage angle of each sound compensation speaker is known, a target sector is drawn with the sound compensation speaker as the center and the auditory distance as the radius, and the angle of the target sector is the horizontal coverage angle.

[0100] S202, based on the horizontal coverage angle and the auditory distance, the target chord length corresponding to the horizontal coverage angle in the target sector is calculated through a preset chord length formula; the distance between the nth sound compensation speaker and the n+1th sound compensation speaker is the target chord length, and n is a positive integer greater than 0.

[0101] The chord length formula is:

[0102]

[0103] L is the target chord length, R is the auditory distance, and a is the horizontal coverage angle.

[0104] ​It can be known from the chord length formula that the target chord length corresponding to the horizontal coverage angle in the target sector can be calculated if the horizontal coverage angle and the hearing distance are known. In the embodiment, the models of each to-be-tested sound box are the same, and thus the sizes of each to-be-tested sound box are the same. In addition, the distance between each to-be-tested sound box and the surrounding to-be-tested sound box is the target chord length. At this time, the target sectors of each to-be-tested sound box all have intersection points, but each target sector has no overlapping area.

[0105] S203, divide the target length by the target chord length to obtain a target result.

[0106] S204, round the target result to obtain the installation quantity.

[0107] The target result obtained by dividing the target length by the target chord length can be an integer or a non-integer. When the target result is a non-integer, rounding the target result obtains an integer, which is the installation quantity. When the target result is an integer, the target result is the installation quantity.

[0108] For example, if the target length is 10 meters and the target chord length is 4 meters, the target result is 2.5. Since the target result is a non-integer, rounding the target result obtains 2, which is the installation quantity.

[0109] The loudspeaker system control method provided by the embodiment can determine the target chord length according to the horizontal coverage angle and the hearing distance of the to-be-tested sound box, and obtain the installation quantity according to the target length and the target chord length. Thus, personnel participation is not required when the installation quantity of the sound compensation box is determined, thereby effectively reducing the probability that the loudspeaker system has poor loudspeaker effect due to the installation of the sound compensation box by personnel. Figure 2 After step S204 of the embodiment, since the wall will reflect the sound emitted by the to-be-tested sound box when the to-be-tested sound box is close to the wall, affecting the loudspeaker effect, the installation quantity needs to be further optimized. Specifically, the installation quantity is further optimized by Figure 3 which will be described in detail.

[0110] Referring to Figure 3 , the to-be-tested sound box includes an edge sound box closest to a target wall perpendicular to the wall where the to-be-tested sound box is located; after rounding the target result to obtain the installation quantity, the following steps are included:

[0111] S301, subtract the installation quantity from the target result to obtain a target decimal.

[0112] The target decimal indicates the distance of the to-be-tested sound box close to the target wall from the target wall. For example, if the target decimal is greater than 0.5, it indicates that the distance of the to-be-tested sound box close to the target wall from the target wall is greater than half of the target chord length.

[0113] S302, determine whether the target decimal is less than a preset decimal threshold.

[0114] If the target decimal is less than the decimal threshold, it indicates that the speaker under test is too close to the target wall, and the reflection of the sound emitted by the speaker under test by the target wall will affect the clarity of the sound. Conversely, if the target decimal is greater than or equal to the decimal threshold, it indicates that the distance between the speaker under test and the target wall is appropriate, and the reflection of the sound emitted by the speaker under test by the target wall will not affect the clarity of the sound.

[0115] S303. If so, subtract one from the number of installed speakers to obtain the final number of installed speakers to be tested.

[0116] If the target decimal is less than the decimal threshold, the number of speakers to be tested will be reduced by one. That is, if the previously calculated number of speakers to be tested is 4, and the decimal threshold is set to 0.5, if the target decimal is less than 0.5, the number of speakers to be tested will be reduced by one, resulting in 3 speakers. 3 speakers are the final number of speakers to be tested.

[0117] S304. Determine the target distance between the edge speaker and the target wall based on the final installation quantity and target length.

[0118] After determining the final number of speakers to be installed, in order to facilitate the installation of the speakers to be installed, it is necessary to determine the target distance between the edge speakers and the target wall. In this embodiment, the target distance between the edge speakers and the target wall needs to be adjusted according to the target chord length, the final number of speakers to be installed, and the target length.

[0119] The sound reinforcement system control method provided in this embodiment addresses the issue that if the supplementary speaker is too close to the wall, the wall will reflect the sound emitted by the supplementary speaker, thus affecting the sound reinforcement effect. Therefore, the number of speakers to be installed is further optimized by using a target decimal, so that after installing the supplementary speaker, the impact of the supplementary speaker on the sound reinforcement effect of the sound reinforcement system is reduced.

[0120] exist Figure 3 In step S304 of the illustrated embodiment, the target distance between the edge speaker and the target wall is adjusted based on the target chord length, the final number of installations, and the target length. Specifically, through... Figure 4 The embodiments shown will be described in detail.

[0121] Reference Figure 4 The target distance between the edge speaker and the target wall is determined based on the final number of installations and the target length, including the following steps:

[0122] S401. Subtract one from the final installation quantity to get the target quantity, and multiply the target quantity by the target chord length to get the final length.

[0123] The final length refers to the total distance between the final number of speakers to be tested. For example, if the final number of speakers to be tested is 4, and the distance between each speaker to be tested, i.e. the target chord length, is 1.5 meters, then the final length is (4-1)×1.5=4.5 meters.

[0124] S402. Substitute the target length and the final length into the preset distance formula to obtain the target distance.

[0125] The distance formula is:

[0126]

[0127] m is the target distance, Lm is the target length, and Ln is the final length.

[0128] The speaker under test includes two edge speakers. Given the target length and final length, the target distance between each edge speaker and the target wall can be obtained. For example, based on step S401, if the target length Lm is 6.5 meters and the final length Ln is 4.5 meters, then the target distance... That is, the target distance between each edge speaker and the target wall is 1 meter.

[0129] The sound reinforcement system control method provided in this embodiment, after determining the number of speakers to be installed, further optimizes the target distance between the edge speakers of the speakers to be installed and the target wall. That is, the target distance between the edge speakers and the target wall is adjusted by the number of installations, the target chord length, and the target length, thereby effectively reducing the probability of poor sound reinforcement effect of the sound reinforcement system caused by the supplementary speakers.

[0130] exist Figure 1 In step S105 of the illustrated embodiment, the reverberation time of the speaker under test in the target room can be measured using a microphone and an acoustic analysis measuring instrument. Specifically, through... Figure 5 The embodiments shown will be described in detail.

[0131] Reference Figure 5 Based on the microphone of the loudspeaker system, the reverberation time of the speaker under test in the target room is measured, including the following steps:

[0132] S501. Acquire the sound wave emitted by the speaker under test based on the microphone, and analyze the sound wave based on the preset acoustic analysis and measurement instrument to obtain the analysis result.

[0133] As shown in step S105, the reverberation time of the speaker under test in the target room can be obtained using a pre-set acoustic analysis measuring instrument. This instrument measures the reverberation time, which can also be expressed as the time required for the indoor sound energy density to decrease by 60 dB. In this embodiment, the analysis result is a sound attenuation curve, specifically a curve showing a 60 dB sound attenuation. The x-axis of the curve represents time, and the y-axis represents the sound density in decibels.

[0134] S502. The reverberation time is obtained based on the analysis results.

[0135] The reverberation time can be obtained from the curve.

[0136] The sound reinforcement system control method provided in this embodiment obtains the reverberation time based on an acoustic analyzer after installing the supplementary sound box, thereby facilitating the determination of whether the reverberation time after installing the supplementary sound box is within the standard reverberation time range.

[0137] exist Figure 1 After step S107 in the illustrated embodiment, the average sound absorption coefficient range of the sound-absorbing material in the target room can be calculated using the standard reverberation time range. This allows staff to intuitively understand the average sound absorption coefficient range of the sound-absorbing material in the target room and make targeted modifications. Specifically, through... Figure 6 The embodiments shown will be described in detail.

[0138] Reference Figure 6 The room information includes the current average sound absorption coefficient of the building materials in the target room, the room volume of the target room, and the total surface area of ​​the target room;

[0139] After issuing a prompt message to increase the sound absorption coefficient of the sound-absorbing materials in the target room, the following steps are included:

[0140] S601. Based on the standard reverberation time range, the minimum and maximum reverberation times are obtained.

[0141] The standard reverberation time range is the range between the minimum and maximum reverberation times.

[0142] S602. Substitute the minimum reverberation time, the current average sound absorption coefficient, the room volume, and the total surface area into the preset sound absorption coefficient calculation formula to obtain the first average sound absorption coefficient.

[0143] S603. Substitute the maximum reverberation time, the current average sound absorption coefficient, the room volume, and the total surface area into the preset sound absorption coefficient calculation formula to obtain the second average sound absorption coefficient.

[0144] S604 displays the first average sound absorption coefficient and the second average sound absorption coefficient.

[0145] The formula for calculating the sound absorption coefficient is:

[0146]

[0147] A is the average sound absorption coefficient, V is the room volume, S is the total surface area, T is the reverberation time, and a is the current average sound absorption coefficient. According to the sound absorption coefficient calculation formula, the first average sound absorption coefficient and the second average sound absorption coefficient are both calculated by the reverberation time, the current average coefficient, the room volume, and the total surface area.

[0148] Taking the calculation of the second average sound absorption coefficient as an example, if the maximum reverberation time is 0.5 seconds, the current average sound absorption coefficient is 0.1, the room volume is 100, and the total surface area is 200, then the average sound absorption coefficient is That is, the average sound absorption coefficient of the sound absorption material selected by the staff needs to be 0.226.

[0149] The sound amplification system control method provided by the embodiment obtains the first average sound absorption coefficient and the second average sound absorption coefficient according to the maximum reverberation time, the minimum reverberation time, and the preset sound absorption coefficient calculation formula, and displays the first average sound absorption coefficient and the second average sound absorption coefficient, so that it is convenient to directly observe whether the average sound absorption coefficient of the sound absorption material in the room is located between the first average sound absorption coefficient and the second average sound absorption coefficient.

[0150] After the embodiment S604 shown in the figure, the sound absorption material can be automatically matched according to the average sound absorption coefficient, so as to reduce the labor. The specific process is described in detail through the embodiment shown in the figure. Figure 6 Figure 7 The specific process is described in detail through the embodiment shown in the figure.

[0151] Referring to the embodiment shown in the figure, Figure 7 After the first average sound absorption coefficient and the second average sound absorption coefficient are displayed, the following steps are included:

[0152] S701, in the preset sound absorption material database, it is judged whether a first sound absorption material with a sound absorption coefficient located between the first average sound absorption coefficient and the second average sound absorption coefficient is stored.

[0153] The sound absorption material database is preset and stores a plurality of sound absorption materials and sound absorption coefficients corresponding to the sound absorption materials. If the sound absorption material database stores the first sound absorption material with the sound absorption coefficient located between the first average sound absorption coefficient and the second average sound absorption coefficient, it indicates that the first sound absorption material meets the requirements, and if the sound absorption material database does not store the first sound absorption material with the sound absorption coefficient located between the first average sound absorption coefficient and the second average sound absorption coefficient, it indicates that the first sound absorption material does not meet the requirements.

[0154] S702, if the first sound absorption material is stored, output matching information.

[0155] ​The matching information refers to the material quality and material name of the first sound absorption material. If the first sound absorption material is stored, the matching information is output so that the staff can perform sound absorption material modification on the target room based on the first sound absorption material.

[0156] In S703, if the first sound absorption material is not stored, the sound absorption material is matched, and a preset number of second matching information is generated, so that the average sound absorption coefficient of the sound absorption materials in the matching information is within the first average sound absorption coefficient and the second average sound absorption coefficient. If the first sound absorption material is not stored, the sound absorption materials in the sound absorption material database can be matched at this time, so that the average sound absorption coefficient of the sound absorption materials is within the first average sound absorption coefficient and the second average sound absorption coefficient, which also meets the requirements. The second matching information refers to the names of the sound absorption materials and the sound absorption coefficients corresponding to the sound absorption materials. It should be noted that there can be several second matching information at this time, and only a preset number of second matching information is selected at this time, or the matching information is sorted in ascending order according to the number of types of sound absorption materials, and a preset number of matching information is selected in the ascending order.

[0157] For example, if the first average sound absorption coefficient is 0.1 and the second average sound absorption coefficient is 0.4, if the sound absorption coefficient of the A sound absorption material is 0.02 and the sound absorption coefficient of the B sound absorption material is 0.5, since the average sound absorption coefficients of the A sound absorption material and the B sound absorption material are 0.26 and 0.26, which are within the first average sound absorption coefficient and the second average sound absorption coefficient, the second matching information is the A sound absorption material with a sound absorption coefficient of 0.02 and the B sound absorption material with a sound absorption coefficient of 0.5.

[0158] The sound amplification system control method provided by the embodiment can further improve the sound absorption material in the room after obtaining the first average sound absorption coefficient and the second average sound absorption coefficient, so as to reduce the reverberation time in the room as much as possible according to the sound absorption material in the room, and effectively reduce the probability of poor sound amplification effect of the sound amplification system caused by the experience of personnel installing sound compensation boxes.

[0159] The embodiment of the present application also discloses an intelligent terminal, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program, and the sound amplification system control method in the above embodiment is adopted.

[0160] The intelligent terminal can adopt a computer device such as a desktop computer, a notebook computer or a cloud server, and the intelligent terminal comprises but is not limited to the processor and the memory, for example, the intelligent terminal can also comprise an input / output device, a network access device and a bus.

[0161] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), programmable logic devices (PLD), or field programmable gate arrays (FPGA), discrete gates or transistor logic components, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, and the present application is not limited thereto.

[0162] The memory can be an internal storage unit of the smart terminal, for example, a hard disk or a memory of the smart terminal, or an external storage device of the smart terminal, for example, a plug-in hard disk, a smart memory card (SMC), a secure digital card (SD), or a flash memory card (FC) provided on the smart terminal, etc. The memory can also be a combination of the internal storage unit and the external storage device of the smart terminal. The memory is used to store computer programs and other programs and data required by the smart terminal. The memory can also be used to temporarily store data that has been output or will be output, and the present application is not limited thereto.

[0163] The smart terminal stores the sound reinforcement system control method in the memory of the smart terminal, and loads and executes the method on the processor of the smart terminal, which is convenient to use.

[0164] The present application also discloses a computer readable storage medium, and the computer readable storage medium stores a computer program. When the computer program is executed by the processor, the sound reinforcement system control method in the above embodiments is used.

[0165] The computer program can be stored in a computer readable medium, and the computer program includes computer program code in the form of source code, object code, executable files, or some intermediate code, etc. The computer readable medium includes any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the computer readable medium includes but is not limited to the above components. The computer readable storage medium stores the sound reinforcement system control method in the above embodiments, and loads and executes the method on the processor, so as to facilitate the storage and application of the method.

[0166] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A method of controlling a sound amplification system comprising a sound amplification system, characterized by, The method comprises the following steps: acquiring a horizontal coverage angle of a to-be-tested sound box of the sound amplification system; acquiring room information of a target room; acquiring an auditory distance between a listener in the target room and the to-be-tested sound box; based on the auditory distance, the room information and the horizontal coverage angle, calculating an installation quantity of the to-be-tested sound box; based on a microphone of the sound amplification system, measuring a reverberation time of the to-be-tested sound box in the target room; judging whether the reverberation time is within a preset standard reverberation time range; if not, issuing a prompt information of increasing a sound absorption coefficient of sound absorption material in the target room; wherein the to-be-tested sound boxes are all horizontally placed and located on the same horizontal line; the room information comprises a target length of a wall for installing the to-be-tested sound boxes; the calculation of the installation quantity of the to-be-tested sound box based on the auditory distance, the room information and the horizontal coverage angle comprises: taking each to-be-tested sound box as a center and the auditory distance as a radius to draw a target sector; based on the horizontal coverage angle and the auditory distance, calculating a target chord length corresponding to the horizontal coverage angle in the target sector through a preset chord length formula; a distance between an nth to-be-tested sound box and an n+1th to-be-tested sound box is the target chord length, wherein n is a positive integer greater than 0; the chord length formula is: L = R * tan (α) wherein L is the target chord length, R is the auditory distance and α is the horizontal coverage angle; 2. The method of claim 1, wherein, dividing the target length by the target chord length to obtain a target result; taking the target result to an integer to obtain the installation quantity. the to-be-tested sound box comprises an edge sound box closest to a target wall perpendicular to a wall where the to-be-tested sound box is located; after the taking of the target result to an integer to obtain the installation quantity, comprising: subtracting the installation quantity from the target result to obtain a target decimal; judging whether the target decimal is less than a preset decimal threshold; 3. The method of claim 2, wherein, if yes, subtracting one from the installation quantity to obtain a final installation quantity of the to-be-tested sound box; based on the final installation quantity and the target length, determining a target distance between the edge sound box and the target wall. the determination of the target distance between the edge sound box and the target wall based on the final installation quantity and the target length comprises: subtracting one from the final installation quantity to obtain a target quantity, and multiplying the target quantity by the target chord length to obtain a final length; substituting the target length and the final length into a preset distance formula to obtain the target distance; 4. The method of claim 1, wherein, the distance formula is: m = Lm / Ln wherein m is the target distance, Lm is the target length and Ln is the final length.

5. The method of claim 1, wherein, the measurement of the reverberation time of the to-be-tested sound box in the target room based on the microphone of the sound amplification system comprises: acquiring a sound wave emitted by the to-be-tested sound box based on the microphone, and analyzing the sound wave based on a preset acoustic analysis measuring instrument to obtain an analysis result; obtaining the reverberation time based on the analysis result. the room information comprises a current average sound absorption coefficient of building materials in the target room, a room volume of the target room and a total surface area of the target room; After the prompt information for increasing the sound absorption coefficient of the sound absorption material in the target room is sent out, the method comprises: Based on the standard reverberation time range, a minimum reverberation time and a maximum reverberation time are obtained; The minimum reverberation time, the current average sound absorption coefficient, the room volume and the total surface area are substituted into a preset sound absorption coefficient calculation formula to obtain a first average sound absorption coefficient; The maximum reverberation time, the current average sound absorption coefficient, the room volume and the total surface area are substituted into a preset sound absorption coefficient calculation formula to obtain a second average sound absorption coefficient; The first average sound absorption coefficient and the second average sound absorption coefficient are displayed. The sound absorption coefficient calculation formula is: The A is an average sound absorption coefficient, the V is a room volume, the S is the total surface area, the T is a reverberation time, and the a is a current average sound absorption coefficient.

6. The method of claim 5, wherein, After the first average sound absorption coefficient and the second average sound absorption coefficient are displayed, the method comprises: In a preset sound absorption material database, it is judged whether a first sound absorption material with a sound absorption coefficient located within the first average sound absorption coefficient and the second average sound absorption coefficient is stored; If the first sound absorption material is stored, matching information is outputted; If the first sound absorption material is not stored, a sound absorption material is matched, and a preset number of second matching information is generated, so that the average sound absorption coefficients of some sound absorption materials in the matching information are located within the first average sound absorption coefficient and the second average sound absorption coefficient.

7. An intelligent terminal comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that, When the processor loads and executes the computer program, the method in any one of claims 1 to 6 is adopted.

8. A computer-readable storage medium having stored therein a computer program, characterized in that, When the computer program is loaded and executed by the processor, the method in any one of claims 1 to 6 is adopted.

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