Whether the product can be directly placed on the ground during product testing in an anechoic chamber depends on multiple factors. Firstly, it is necessary to consider the characteristics of the product, including its weight, bottom structure, moisture resistance, and whether there are special requirements for the ground, such as static sensitivity. Some products placed directly on the ground may affect their performance or cause damage.
 
Secondly, specific testing standards and objectives are also important. Some acoustic tests may require the product to be located on specific support structures to avoid ground interference with the accuracy of test results. For example, ground reflections may interfere with acoustic measurements under free field conditions.
 
In addition, the floor of the anechoic chamber is usually treated with special measures, such as laying sound-absorbing or shock-absorbing materials, to reduce ground vibrations and sound reflections. If the design of the anechoic chamber has already considered the need for direct placement of products, then it may be possible to place products directly.
 
Finally, even if the product is allowed to be placed directly on the ground, specific support frames or pads may be required to ensure product stability, prevent vibration, and maintain a certain distance from the ground, especially for products that require measurement of bottom noise emissions.
 
In summary, whether the product can be directly placed on the ground of the anechoic chamber requires comprehensive consideration of the product's characteristics, testing requirements, and the design of the anechoic chamber. In most cases, to ensure the accuracy of testing, it is recommended to use appropriate support devices.