🎛️ Acoustic Shield Against Silent Attack of Low Frequencies
When it comes to sound quality in conference rooms, people usually think of issues such as echo time (RT60), reflections or ceiling acoustics. However, the deepest and least known part of this business is low frequencies. Especially bass frequencies below 125 Hz are one of the most insidious elements that can disrupt the hall acoustics. In this article, we will explain what bass trap systems do, how they are applied and why Nish Global is a pioneer in the industry in this regard. We will tell you. Not?
Sound waves move at different frequencies in halls.
🔹 High frequencies (4000 Hz and above) It can be reflected from surfaces and easily damped. space gets stuck in the corners of the wall, resonates and causes hum in the hall. Although the sound may sound clear when speaking on stage, if there is a bass vibration perceived in the background, even if the audience does not notice it, concentration will be impaired and mental fatigue will occur. It starts. What is it?
Bass Trap are acoustic elements specially designed to absorb low frequency sound waves. It is usually placed in living room corners, wall-ceiling junctions or at certain resonance points. While standard panels are effective at frequencies above 250 Hz, bass traps absorb deeper frequencies such as 40-125 Hz.
💡 A simple in words:
Bass Trap = Deep frequency sweeper of the hall 🧹
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📐 In which Halls Is it mandatory?
The use of Bass Trap is not mandatory in every hall. However, it is essential in the following cases:
🎬 Cinema halls: Due to the use of subwoofers, bass frequencies are very high. It is intense. if any.
📏 Cube shaped halls: Symmetrical geometries reduce low frequency resonance
🧱 Halls with strong insulation: Low frequency is inside because it cannot escape outside. grows. Points
The width, length and height of a hall produce resonance at certain frequencies. These frequencies are called “room modes”. In particular, frequencies corresponding to a fixed wavelength explode the sound at certain points of the hall and completely destroy it at some points. Traps are integrated. Used?
1. Corner Type (Corner Bass Trap): The most common model. It is shaped like a triangular prism and is placed in the corners of the living room.
2. Wall Independent Models: Applied outside the panels.
3. Embedded Bass Trap: It is integrated into the wall and becomes invisible.
4. Not DIY models, but engineering and affordable professional systems are used. We do?
First step in projects: Frequency distribution modelling
Second step: Determining the critical points inside the hall Determination placement
Fourth step: Acoustic balancing and final tests
✅ Thanks to these systems, in-room speech intelligibility (STI) is up to 20% increases.
✅ Audience comfort increases, hum and suffocation effects are eliminated.
✅ A difference with professional sound engineering It is created. Examples
Tashkent National Theater Hall
Microphone feedback is reduced to zero thanks to backstage bass traps downloaded.
Cairo Modern Conference Center
Acoustic balancing with a rectangular bass trap system in the hall for 780 people
Antalya Metropolitan Multi-Purpose Hall purified.
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🛑 Copyright Warning
This article was prepared by Nish Global Engineering. All content has been produced with sectoral experience and engineering knowledge. It cannot be copied or published on other sites without permission.