- Model NO.: TW-230A
- Trademark: Tony
- Type: Toy Testing Machine
- Origin: China
Product Name: Anechoic Chamber
Function: Provide acoustic free field environment, low noise test environment.
All anechoic chamber wall, ground, top, six surface are installed glass fiber sound absorber lined chamber.
In order to facilitate the work personnel walk, ground set up the sidewalk or impending wire rack.
Under the circumstance of outside noise higher or request to measure vibration, use the floating structure to isolate the outside influences, vibration damping materials plays a key role in floating structure. In practical project, use what kind of vibration reduction depends on the requirement of the background noise index and the surrounding environment noise.
External size, internal size according to the requirement and standard to design.
Anechoic chamber (semi-anechoic chamber) acoustic performance parameter:
Frequency range from 125Hz to 8000Hz, similar free field environment, The inverse square law performance deviation can meet with the following international standards ISO 3745 requirements
Measurement requirement is to use single frequency signal, choose1/3 octave of center frequency.
1/3 octave (Hz), allow deviation (dB)
≤ 630 ± 2.5 800-5000 ± 2.0 ≥ 6300 ± 3.0
Semi-anechoic chamber structure parameter:
Item Anechoic chamber Note insulation structure Brick and concrete wall-puggin- sound absorber lined chamber. Vibration isolation structure Spring isolator natural frequency<5Hz Acoustic structure cavity 150mm thickness Absorber lined chamber 600*600*800m L'W'H.
Inside Size: 6'6 '3.5 m L'W'H Cover space size: 8.4'8.4'5.4m L'W'H(excluding control room size)
Main technical parameter:
No. Parameter Semi-anechoic chamber Note 1 limiting frequency 250 Hz 2 acoustic absorptivity Above limiting frequency but not less than0.99 3 background noise ≤ 22dB(A) ambient noise≤ 65dB(A) 4 Free field radius ≥ 1.2MSound insulation Engineering Specification feature:
1. Combinatorial Design, can be moved, easy to install and uninstall
2. Fireproofing, heat-resistant, moistureproof, sturdy and durable, suitable for indoor and outdoor
3. Can meet ventilation, lighting and demand
4. Appearance beautiful, Colors available
5. Efficient sound-absorbing, sound insulation effect