First, the characteristics of the acoustic design of the conference hall
It is determined by the size, scope of use and requirements of the conference itself. Its characteristics are as follows:
1. The difference in the size of the conference hall (volume and capacity) is greater than that of all halls. As small as a dozen people, can accommodate about 100m3; large can accommodate 10,000 listeners, the volume of 100000m3 or even larger conference halls, the gap is a thousand times. Therefore, the corresponding reverberation time is also very different, and the concrete response time value must be determined according to the volume, usually in the range of 0.5-1.8 s;
2. The level, purpose and standard of the conference hall vary greatly. If there is a conference hall of this department or the system, there are also various conference halls and rooms for international conferences. Due to the different grades, uses and standards, there is obviously a big difference in the throwing equipment, interior decoration and acoustic treatment.
3. Because the conference halls use the sound absorption method of strong sound absorption and short reverberation, the body shape has little effect on the acoustics, and the choice is relatively free.
4. The conference hall can use sound reinforcement systems according to capacity and use, and natural sound can also be used, which will also be treated differently in architectural design and acoustic treatment.
Due to the characteristics of the conference hall, the acoustic design is different from other halls.
Second, the choice of the best reverberation time in the conference hall:
Short reverberation should be used as much as possible, depending on the requirements of speech intelligibility and the design of the sound reinforcement system. However, the use of short reverberations in large-volume conference halls, especially controlling low-frequency reverberations, increases investment and is difficult to implement. Therefore, determining the reasonable optimal reverberation time value that satisfies both the good language and the investment savings should be based on the size of the volume.
The best reverberation time for the conference hall is introduced in many documents, but there are big discrepancies. Especially in the large-volume conference hall, the recommended values ​​at home and abroad are quite different. In this regard, we conducted statistical analysis on the acoustic survey of 42 large and small conference halls (or conference-based conference halls) in China, and proposed the recommended reverberation time value with volume change.
The recommended value is allowed to vary by ±0.1 s. In addition, when the volume is less than 30 m3, it is not necessary to be less than 0.4 s. When the volume is greater than 40,000 m3, it should not be greater than 1.9 s. According to the survey, when the large-volume conference hall has a reverberation of more than 1.9s, the speech intelligibility is poor. It is necessary to use a distributed sound reinforcement system, that is, a small power speaker on the seat back of each seat to satisfy the hearing effect. An acoustic delay system must also be set up. This has many problems in terms of increasing investment and daily management.
Third, the choice of sound absorption structure and the control of sound quality defects
Sound absorbing materials and structures in the conference hall have the dual function of controlling reverberation time and sound quality defects. Due to the short reverberation of the conference hall, a strong sound absorption structure must be used. Because of the strong sound absorption, architects often use a variety of shapes that are prone to acoustic defects, such as round, oval, oval planes, domes and so on. The measure to control the sound quality defect, in addition to the configuration of the diffusion structure, usually uses a strong sound absorption method because it also plays a role in controlling the reverberation time.
The configuration and selection of the sound absorption structure of the conference hall shall be determined according to its volume standard (ie decoration requirements): in a small conference room of about 100m3 (general round table), if the interior is provided with carpets, curtains and sofa seats, usually The expected reverberation time value can be achieved without additional sound absorption. In conference halls of more than 200 m3, sound absorbing materials or structures should generally be provided.
There are many types of sound absorbing materials (or structures) and a variety of forms. First, the characteristics of the acoustic design of the conference hall
It is determined by the size, scope of use and requirements of the conference itself. Its characteristics are as follows:
1. The difference in the size of the conference hall (volume and capacity) is greater than that of all halls. As small as a dozen people, can accommodate about 100m3; large can accommodate 10,000 listeners, the volume of 100000m3 or even larger conference halls, the gap is a thousand times. Therefore, the corresponding reverberation time is also very different, and the concrete response time value must be determined according to the volume, usually in the range of 0.5-1.8 s;
2. The level, purpose and standard of the conference hall vary greatly. If there is a conference hall of this department or the system, there are also various conference halls and rooms for international conferences. Due to the different grades, uses and standards, there is obviously a big difference in the throwing equipment, interior decoration and acoustic treatment.
3. Because the conference halls use the sound absorption method of strong sound absorption and short reverberation, the body shape has little effect on the acoustics, and the choice is relatively free.
4. The conference hall can use sound reinforcement systems according to capacity and use, and natural sound can also be used, which will also be treated differently in architectural design and acoustic treatment.
Due to the characteristics of the conference hall, the acoustic design is different from other halls.
Second, the choice of the best reverberation time in the conference hall:
Short reverberation should be used as much as possible, depending on the requirements of speech intelligibility and the design of the sound reinforcement system. However, the use of short reverberations in large-volume conference halls, especially controlling low-frequency reverberations, increases investment and is difficult to implement. Therefore, determining the reasonable optimal reverberation time value that satisfies both the good language and the investment savings should be based on the size of the volume.
The best reverberation time for the conference hall is introduced in many documents, but there are big discrepancies. Especially in the large-volume conference hall, the recommended values ​​at home and abroad are quite different. In this regard, we conducted statistical analysis on the acoustic survey of 42 large and small conference halls (or conference-based conference halls) in China, and proposed the recommended reverberation time value with volume change.
The recommended value is allowed to vary by ±0.1 s. In addition, when the volume is less than 30 m3, it is not necessary to be less than 0.4 s. When the volume is greater than 40,000 m3, it should not be greater than 1.9 s. According to the survey, when the large-volume conference hall has a reverberation of more than 1.9s, the speech intelligibility is poor. It is necessary to use a distributed sound reinforcement system, that is, a small power speaker on the seat back of each seat to satisfy the hearing effect. An acoustic delay system must also be set up. This has many problems in terms of increasing investment and daily management.
Third, the choice of sound absorption structure and the control of sound quality defects
Sound absorbing materials and structures in the conference hall have the dual function of controlling reverberation time and sound quality defects. Due to the short reverberation of the conference hall, a strong sound absorption structure must be used. Because of the strong sound absorption, architects often use a variety of shapes that are prone to acoustic defects, such as round, oval, oval planes, domes and so on. The measure to control the sound quality defect, in addition to the configuration of the diffusion structure, usually uses a strong sound absorption method because it also plays a role in controlling the reverberation time.
The configuration and selection of the sound absorption structure of the conference hall shall be determined according to its volume standard (ie decoration requirements): in a small conference room of about 100m3 (general round table), if the interior is provided with carpets, curtains and sofa seats, usually The expected reverberation time value can be achieved without additional sound absorption. In conference halls of more than 200 m3, sound absorbing materials or structures should generally be provided.
There are many types of sound absorbing materials (or structures) and a variety of forms. First, the characteristics of the acoustic design of the conference hall
It is determined by the size, scope of use and requirements of the conference itself. Its characteristics are as follows:
1. The difference in the size of the conference hall (volume and capacity) is greater than that of all halls. As small as a dozen people, can accommodate about 100m3; large can accommodate 10,000 listeners, the volume of 100000m3 or even larger conference halls, the gap is a thousand times. Therefore, the corresponding reverberation time is also very different, and the concrete response time value must be determined according to the volume, usually in the range of 0.5-1.8 s;
2. The level, purpose and standard of the conference hall vary greatly. If there is a conference hall of this department or the system, there are also various conference halls and rooms for international conferences. Due to the different grades, uses and standards, there is obviously a big difference in the throwing equipment, interior decoration and acoustic treatment.
3. Because the conference halls use the sound absorption method of strong sound absorption and short reverberation, the body shape has little effect on the acoustics, and the choice is relatively free.
4. The conference hall can use sound reinforcement systems according to capacity and use, and natural sound can also be used, which will also be treated differently in architectural design and acoustic treatment.
Due to the characteristics of the conference hall, the acoustic design is different from other halls.
Second, the choice of the best reverberation time in the conference hall:
Short reverberation should be used as much as possible, depending on the requirements of speech intelligibility and the design of the sound reinforcement system. However, the use of short reverberations in large-volume conference halls, especially controlling low-frequency reverberations, increases investment and is difficult to implement. Therefore, determining the reasonable optimal reverberation time value that satisfies both the good language and the investment savings should be based on the size of the volume.
The best reverberation time for the conference hall is introduced in many documents, but there are big discrepancies. Especially in the large-volume conference hall, the recommended values ​​at home and abroad are quite different. In this regard, we conducted statistical analysis on the acoustic survey of 42 large and small conference halls (or conference-based conference halls) in China, and proposed the recommended reverberation time value with volume change.
The recommended value is allowed to vary by ±0.1 s. In addition, when the volume is less than 30 m3, it is not necessary to be less than 0.4 s. When the volume is greater than 40,000 m3, it should not be greater than 1.9 s. According to the survey, when the large-volume conference hall has a reverberation of more than 1.9s, the speech intelligibility is poor. It is necessary to use a distributed sound reinforcement system, that is, a small power speaker on the seat back of each seat to satisfy the hearing effect. An acoustic delay system must also be set up. This has many problems in terms of increasing investment and daily management.
Third, the choice of sound absorption structure and the control of sound quality defects
Sound absorbing materials and structures in the conference hall have the dual function of controlling reverberation time and sound quality defects. Due to the short reverberation of the conference hall, a strong sound absorption structure must be used. Because of the strong sound absorption, architects often use a variety of shapes that are prone to acoustic defects, such as round, oval, oval planes, domes and so on. The measure to control the sound quality defect, in addition to the configuration of the diffusion structure, usually uses a strong sound absorption method because it also plays a role in controlling the reverberation time.
The configuration and selection of the sound absorption structure of the conference hall shall be determined according to its volume standard (ie decoration requirements): in a small conference room of about 100m3 (general round table), if the interior is provided with carpets, curtains and sofa seats, usually The expected reverberation time value can be achieved without additional sound absorption. In conference halls of more than 200 m3, sound absorbing materials or structures should generally be provided.
There are many types of sound absorbing materials (or structures) and a variety of forms.
It is determined by the size, scope of use and requirements of the conference itself. Its characteristics are as follows:
1. The difference in the size of the conference hall (volume and capacity) is greater than that of all halls. As small as a dozen people, can accommodate about 100m3; large can accommodate 10,000 listeners, the volume of 100000m3 or even larger conference halls, the gap is a thousand times. Therefore, the corresponding reverberation time is also very different, and the concrete response time value must be determined according to the volume, usually in the range of 0.5-1.8 s;
2. The level, purpose and standard of the conference hall vary greatly. If there is a conference hall of this department or the system, there are also various conference halls and rooms for international conferences. Due to the different grades, uses and standards, there is obviously a big difference in the throwing equipment, interior decoration and acoustic treatment.
3. Because the conference halls use the sound absorption method of strong sound absorption and short reverberation, the body shape has little effect on the acoustics, and the choice is relatively free.
4. The conference hall can use sound reinforcement systems according to capacity and use, and natural sound can also be used, which will also be treated differently in architectural design and acoustic treatment.
Due to the characteristics of the conference hall, the acoustic design is different from other halls.
Second, the choice of the best reverberation time in the conference hall:
Short reverberation should be used as much as possible, depending on the requirements of speech intelligibility and the design of the sound reinforcement system. However, the use of short reverberations in large-volume conference halls, especially controlling low-frequency reverberations, increases investment and is difficult to implement. Therefore, determining the reasonable optimal reverberation time value that satisfies both the good language and the investment savings should be based on the size of the volume.
The best reverberation time for the conference hall is introduced in many documents, but there are big discrepancies. Especially in the large-volume conference hall, the recommended values ​​at home and abroad are quite different. In this regard, we conducted statistical analysis on the acoustic survey of 42 large and small conference halls (or conference-based conference halls) in China, and proposed the recommended reverberation time value with volume change.
The recommended value is allowed to vary by ±0.1 s. In addition, when the volume is less than 30 m3, it is not necessary to be less than 0.4 s. When the volume is greater than 40,000 m3, it should not be greater than 1.9 s. According to the survey, when the large-volume conference hall has a reverberation of more than 1.9s, the speech intelligibility is poor. It is necessary to use a distributed sound reinforcement system, that is, a small power speaker on the seat back of each seat to satisfy the hearing effect. An acoustic delay system must also be set up. This has many problems in terms of increasing investment and daily management.
Third, the choice of sound absorption structure and the control of sound quality defects
Sound absorbing materials and structures in the conference hall have the dual function of controlling reverberation time and sound quality defects. Due to the short reverberation of the conference hall, a strong sound absorption structure must be used. Because of the strong sound absorption, architects often use a variety of shapes that are prone to acoustic defects, such as round, oval, oval planes, domes and so on. The measure to control the sound quality defect, in addition to the configuration of the diffusion structure, usually uses a strong sound absorption method because it also plays a role in controlling the reverberation time.
The configuration and selection of the sound absorption structure of the conference hall shall be determined according to its volume standard (ie decoration requirements): in a small conference room of about 100m3 (general round table), if the interior is provided with carpets, curtains and sofa seats, usually The expected reverberation time value can be achieved without additional sound absorption. In conference halls of more than 200 m3, sound absorbing materials or structures should generally be provided.
There are many types of sound absorbing materials (or structures) and a variety of forms. First, the characteristics of the acoustic design of the conference hall
It is determined by the size, scope of use and requirements of the conference itself. Its characteristics are as follows:
1. The difference in the size of the conference hall (volume and capacity) is greater than that of all halls. As small as a dozen people, can accommodate about 100m3; large can accommodate 10,000 listeners, the volume of 100000m3 or even larger conference halls, the gap is a thousand times. Therefore, the corresponding reverberation time is also very different, and the concrete response time value must be determined according to the volume, usually in the range of 0.5-1.8 s;
2. The level, purpose and standard of the conference hall vary greatly. If there is a conference hall of this department or the system, there are also various conference halls and rooms for international conferences. Due to the different grades, uses and standards, there is obviously a big difference in the throwing equipment, interior decoration and acoustic treatment.
3. Because the conference halls use the sound absorption method of strong sound absorption and short reverberation, the body shape has little effect on the acoustics, and the choice is relatively free.
4. The conference hall can use sound reinforcement systems according to capacity and use, and natural sound can also be used, which will also be treated differently in architectural design and acoustic treatment.
Due to the characteristics of the conference hall, the acoustic design is different from other halls.
Second, the choice of the best reverberation time in the conference hall:
Short reverberation should be used as much as possible, depending on the requirements of speech intelligibility and the design of the sound reinforcement system. However, the use of short reverberations in large-volume conference halls, especially controlling low-frequency reverberations, increases investment and is difficult to implement. Therefore, determining the reasonable optimal reverberation time value that satisfies both the good language and the investment savings should be based on the size of the volume.
The best reverberation time for the conference hall is introduced in many documents, but there are big discrepancies. Especially in the large-volume conference hall, the recommended values ​​at home and abroad are quite different. In this regard, we conducted statistical analysis on the acoustic survey of 42 large and small conference halls (or conference-based conference halls) in China, and proposed the recommended reverberation time value with volume change.
The recommended value is allowed to vary by ±0.1 s. In addition, when the volume is less than 30 m3, it is not necessary to be less than 0.4 s. When the volume is greater than 40,000 m3, it should not be greater than 1.9 s. According to the survey, when the large-volume conference hall has a reverberation of more than 1.9s, the speech intelligibility is poor. It is necessary to use a distributed sound reinforcement system, that is, a small power speaker on the seat back of each seat to satisfy the hearing effect. An acoustic delay system must also be set up. This has many problems in terms of increasing investment and daily management.
Third, the choice of sound absorption structure and the control of sound quality defects
Sound absorbing materials and structures in the conference hall have the dual function of controlling reverberation time and sound quality defects. Due to the short reverberation of the conference hall, a strong sound absorption structure must be used. Because of the strong sound absorption, architects often use a variety of shapes that are prone to acoustic defects, such as round, oval, oval planes, domes and so on. The measure to control the sound quality defect, in addition to the configuration of the diffusion structure, usually uses a strong sound absorption method because it also plays a role in controlling the reverberation time.
The configuration and selection of the sound absorption structure of the conference hall shall be determined according to its volume standard (ie decoration requirements): in a small conference room of about 100m3 (general round table), if the interior is provided with carpets, curtains and sofa seats, usually The expected reverberation time value can be achieved without additional sound absorption. In conference halls of more than 200 m3, sound absorbing materials or structures should generally be provided.
There are many types of sound absorbing materials (or structures) and a variety of forms. First, the characteristics of the acoustic design of the conference hall
It is determined by the size, scope of use and requirements of the conference itself. Its characteristics are as follows:
1. The difference in the size of the conference hall (volume and capacity) is greater than that of all halls. As small as a dozen people, can accommodate about 100m3; large can accommodate 10,000 listeners, the volume of 100000m3 or even larger conference halls, the gap is a thousand times. Therefore, the corresponding reverberation time is also very different, and the concrete response time value must be determined according to the volume, usually in the range of 0.5-1.8 s;
2. The level, purpose and standard of the conference hall vary greatly. If there is a conference hall of this department or the system, there are also various conference halls and rooms for international conferences. Due to the different grades, uses and standards, there is obviously a big difference in the throwing equipment, interior decoration and acoustic treatment.
3. Because the conference halls use the sound absorption method of strong sound absorption and short reverberation, the body shape has little effect on the acoustics, and the choice is relatively free.
4. The conference hall can use sound reinforcement systems according to capacity and use, and natural sound can also be used, which will also be treated differently in architectural design and acoustic treatment.
Due to the characteristics of the conference hall, the acoustic design is different from other halls.
Second, the choice of the best reverberation time in the conference hall:
Short reverberation should be used as much as possible, depending on the requirements of speech intelligibility and the design of the sound reinforcement system. However, the use of short reverberations in large-volume conference halls, especially controlling low-frequency reverberations, increases investment and is difficult to implement. Therefore, determining the reasonable optimal reverberation time value that satisfies both the good language and the investment savings should be based on the size of the volume.
The best reverberation time for the conference hall is introduced in many documents, but there are big discrepancies. Especially in the large-volume conference hall, the recommended values ​​at home and abroad are quite different. In this regard, we conducted statistical analysis on the acoustic survey of 42 large and small conference halls (or conference-based conference halls) in China, and proposed the recommended reverberation time value with volume change.
The recommended value is allowed to vary by ±0.1 s. In addition, when the volume is less than 30 m3, it is not necessary to be less than 0.4 s. When the volume is greater than 40,000 m3, it should not be greater than 1.9 s. According to the survey, when the large-volume conference hall has a reverberation of more than 1.9s, the speech intelligibility is poor. It is necessary to use a distributed sound reinforcement system, that is, a small power speaker on the seat back of each seat to satisfy the hearing effect. An acoustic delay system must also be set up. This has many problems in terms of increasing investment and daily management.
Third, the choice of sound absorption structure and the control of sound quality defects
Sound absorbing materials and structures in the conference hall have the dual function of controlling reverberation time and sound quality defects. Due to the short reverberation of the conference hall, a strong sound absorption structure must be used. Because of the strong sound absorption, architects often use a variety of shapes that are prone to acoustic defects, such as round, oval, oval planes, domes and so on. The measure to control the sound quality defect, in addition to the configuration of the diffusion structure, usually uses a strong sound absorption method because it also plays a role in controlling the reverberation time.
The configuration and selection of the sound absorption structure of the conference hall shall be determined according to its volume standard (ie decoration requirements): in a small conference room of about 100m3 (general round table), if the interior is provided with carpets, curtains and sofa seats, usually The expected reverberation time value can be achieved without additional sound absorption. In conference halls of more than 200 m3, sound absorbing materials or structures should generally be provided.
There are many types of sound absorbing materials (or structures) and a variety of forms.
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