1. Structural design:

- Flat plate anechoic chamber: It is usually composed of a series of parallel arranged sound-absorbing panels, which are usually made of porous materials such as fiberglass or sponge to absorb incident sound waves. The design of the flat plate anechoic chamber is relatively simple and suitable for use in limited spaces.

- Wedge anechoic chamber: Its internal surface is covered with conical or pyramid-shaped sound absorbers, which are also usually made of porous materials. This design can more effectively break the reflection path of sound waves and provide sound absorption effects in a wider frequency range.

2. Sound absorption performance:

- Flat plate anechoic chamber: It mainly has a good absorption effect on medium and high frequency sound waves, but the absorption of low frequency sound waves is relatively weak.

- Split anechoic chamber: Due to its special geometry, it can better absorb low-frequency sound waves, so it has better sound absorption performance in the full frequency range.

3. Application scenarios:

- Flat-plate anechoic chamber: Commonly used in experiments such as speech recognition and audio equipment testing that require control of medium and high-frequency noise.

- Split anechoic chamber: More suitable for precision acoustic measurements that require full-band anechoic, such as sound system testing, sound source localization, etc.

4. Space utilization:

- Flat-plate anechoic chamber: Due to its compact structure, it is more suitable for laboratories with limited space.

- Split anechoic chamber: Usually requires a larger space to arrange the conical sound absorber, so it is more common in large laboratories or professional acoustic testing facilities.

In general, the choice of anechoic chamber depends on factors such as specific experimental needs, available space, and budget.