New noise is revised
The Law of the People´s Republic of China on the Prevention and Control of Noise Pollution was adopted at the 32nd Session of the Standing Committee of the 13th National People´s Congress on December 24,2021, and this Law shall come into force on June 5,2022. The draft addresses prominent problems and strengthens the management of noise classification. In view of the noise of social life, it is stipulated that entertainment and fitness activities in public places shall abide by the relevant activity areas and time periods of the managers of public places.
Square dancing is popular
In recent years, square dancing, as the "most down-to-earth" and "grassroots people are the most popular" mass activities, has been widely carried out across the country. However, with the popularity of square dancing activities, all kinds of disputes and conflicts caused by "noise disturbance" are also increasing.
know-why
Directional sound technology uses the acoustic principle to spread the sound to a specific area through the specified direction and angle. Compared to traditional loudspeakers, directional sound can point the sound to a specific listener, thus reducing noise interference to the surroundings. This technology can be used not only in indoor environments, but also in outdoor squares, stadiums and other places.
In the dance field broadcast, the directional sound technology can effectively solve the problem of noise disturbance. First, the directional sound can focus the sound into a designated listener area, thus reducing the impact of noise on the surrounding environment. Secondly, the directional sound can control the size and direction of the sound, thus making the sound more clear and accurate. Finally, the directional sound can avoid the problem of sound rebound and echo, thus improving the listening effect of the audience.
Sonic orientation
The frequency of our ear is in the range of 20 hz-20 khz, and the wavelength is between 17 meters and 17 mm. According to the wavelength and frequency formula: λ =V / f, it is not difficult to find that the higher the frequency, the shorter the wavelength. The sound wave has the characteristics of not diffraction far more than its wavelength, so the shorter the wavelength, the stronger the directivity in its transmission direction.
The shorter the wavelength, the worse the diffraction. The worse the diffraction is, the stronger the directivity is.
vocalism principle
The directional speaker will hear 20 hz-20 Khz sound through DSP intelligent frequency division, spectrum transfer, beam forming and other technologies and algorithms, the full frequency sound intelligent control in the front 60 corner range, the sound pressure level of 2 meters can reach 115 db, the rear 2 meters can decay 40 db to 80 db below, really played the effect of preventing the disturbance from the source.
System introduction
Wisdom dance field system is a multi-functional integration comprehensive wisdom sports service facilities, based on the exclusive patent of directional sound algorithm and technology, in order to solve the public cultural and sports problems caused by the nuisance, using big data, Internet + operation mode, build into a set of "the national fitness sports concept propaganda", "mass science fitness guidance", "culture", "grassroots convenient service" in the integration of comprehensive wisdom style service facilities.
ystem function
1. Solve the problem of disturbing the people: based on the principle of sound directional propagation, the sound is attenuated with the increase of the Angle, which can make the sound spread in a specific area and greatly reduce the noise interference to the surrounding environment.
2. Solve the problem of reverberation: through scientific point design, solve the problem of reverberation caused by the empty and different sound intensity of the playground field, bid farewell to reverberation and sound asynchrony, and realize the balance of sound field.
3. Improve voice quality: adopt the exclusive directional sound frequency technology, produce the target audible sound through the air self-demodulation, realize the directional transmission of audible sound, so that the sound has better voice clarity.
product presentation
Outdoor square dance directional sound series adopts intelligent frequency division and phased array beam technology. Through the combination of multiple speakers, the main advantage of sound control and directional transmission lies in its flexibility and stability. Since it can change the phase of the sound waves, it can be adapted to a variety of different environments and goals. In addition, the working principle of the full frequency parameter array is relatively stable, not easy to be affected by environmental factors, with a wide frequency sound range, and good low frequency and good sound quality.
Non-free intelligent frequency directional square dance-OSEN-QP-L100H
l Intelligent frequency division directional audio
l Sound angle was 120° ahead
l Maximum sound pressure level at 1 m: 115 db
l Supports U disk, Bluetooth, TF card, AUX connection, and microphone
l Each all-in-one machine supports 40-60 people to dance, which can dance or sing
l The broadcast controller can be locked, and the key is managed by the square dance leader, security management and management office.
Noiseless phased array beamforming directional square dance all-in-one machine (singing version) -OSEN-QP-L200H
l Phased array beamforming directional sound
l Sound Angle: a minimum of 30° ahead
l Maximum sound pressure level at 1 m: 115 db
l Supports U disk, Bluetooth, TF card, AUX connection, and microphone
l DSP voice enhancement algorithm, mobile defense noise algorithm, phased array delay algorithm, beautiful music and beautiful song, sound directional transmission does not disturb the people.
l The broadcast controller can be locked, and the key is managed by the square dance leader, security management and management office.
Noise-free intelligent frequency division directional square dance all-in-one machine (heavy bass version) -OSEN-QP-L 300H
l Intelligent frequency division directional audio
l Sound Angle: minimum front 30° to maximum back to back in two directions
l Maximum sound pressure level at 1 m: 115 db
l Supports U disk, Bluetooth, TF card, AUX connection, and microphone
l Each all-in-one machine supports 50-80 people for disco dancing or shuffling.
l The broadcast controller can be locked, and the key is managed by the square dance leader, security management and management office.
Expected results
The directional audio equipment of the noise-free intelligent square dance system provides clear and high-quality music playback effect through accurate frequency division and directional sound function, and accurate noise control.
Through the remote monitoring and maintenance mechanism, we are able to deal with equipment failures in time and constantly improve the system to meet the needs of users.
In use, user feedback and suggestions are very important to our system optimization. We will continue to pay attention to user needs, constantly improve the performance of the system, and bring better dance experience to square dance lovers.
We will improve the development of smart cities
Noise-free smart square dance system is an important part of the construction of smart city. Its promotion and application can promote the intelligent, green and healthy development of the city, and enhance the city image and cultural soft power.
Enhance the visibility and utilization rate of the park
Through the construction of the noise-free intelligent square dancing system, more tourists and residents will be attracted to the park to participate in the square dancing activities, and improve the popularity and utilization rate of the park.
Improve the experience of cultural and sports activities
By providing directional sound, intelligent control, remote play and other functions, the square dance lovers can enjoy the pleasure feeling brought by the music in the beautiful park environment, and improve their activity experience.
Enhance the level of tourist civilization
Due to the characteristics of directional sound technology, civilization is passed to tourists in the target area without affecting people in other areas. This can increase the reception rate of information, guide tourists to travel in a civilized way, and improve the possibility of others observing public morality.
