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E-mail
csj@audfly.com
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Phone
15262411757
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Address
3rd Floor, Building 4, No. 78 Keling Road, High tech Zone, Suzhou City, Jiangsu Province
Suzhou Qingting Acoustic Technology Co., Ltd
Deeply understand the functional characteristics of the core components of directional square dance sound system
Date: 2025-10-09Read: 9
The directional square dance sound system utilizes acoustic focusing technology to concentrate and project sound onto a fixed area (such as in front of the dance team), significantly reducing lateral and rear noise leakage, achieving a harmonious coexistence of "dancers can hear clearly, residents can hear quietly". Its core technology integrates acoustic design, electronic engineering, and structural mechanics, with each component working together to construct a highly directional sound field. A deep understanding of the functional characteristics of the core components of directional square dance sound is the key to understanding this' silent technology '.
1. Directional sound source array
Ultrasonic transducer array:
Using multiple high-frequency (usually 20-50kHz) piezoelectric ceramic or magnetostrictive transducers to form a linear or planar array;
Using the principle of "parametric array", the modulated ultrasound beam is emitted and demodulated into audible sound by the non-linear action of air.
Sound beam control:
By using electronic delay technology, the phase of each transducer can be precisely controlled to achieve beam pointing adjustment (such as ± 30 ° electronic control steering);
The width of the sound beam can be adjusted (such as 10 ° -60 °) to adapt to different sizes of dance teams.
2. Audio signal processing module
Modem:
Modulate ordinary audio signals (20Hz-20kHz) onto ultrasonic carriers to achieve long-distance directional transmission;
After demodulation, restore clear vocals and music.
Digital Signal Processor (DSP):
Real time optimization of sound quality and compensation for high-frequency attenuation;
Built in equalizer and compressor to enhance speech clarity and music dynamic range.
3. Power amplifier
High efficiency Class D amplifier:
Provide high voltage and high current driving signals for ultrasonic transducers to ensure beam intensity;
High energy efficiency, low heat generation, suitable for long-term outdoor use.
Impedance matching circuit: ensures optimal energy transfer between the transducer and the amplifier, preventing distortion or damage.
4. Speaker Structure and Acoustic Design
Waveguides and horn structures:
Guiding the direction of sound wave propagation, reducing edge diffraction, and enhancing directionality;
Optimize sound wave superposition to enhance beam concentration.
Windproof and rainproof shell:
IP54 or above protection level, suitable for complex outdoor environments;
The material is lightweight and sturdy (such as ABS+metal mesh), making it easy to handle and install.