A megaphone is typically designed to amplify sound and make it louder, but it is not specifically designed to transmit low-frequency sounds or to pass through solid walls.
The effectiveness of a megaphone in transmitting low-frequency sounds depends on several factors, including the design and specifications of the specific megaphone model. In general, megaphones are better suited for amplifying mid-range and high-frequency sounds rather than low-frequency sounds.
As for sound transmission through walls, low-frequency sounds have longer wavelengths compared to high-frequency sounds. These longer wavelengths tend to have more difficulty passing through obstacles like walls, as they are more easily absorbed or diffused. Therefore, it can be more challenging for low-frequency sounds to pass through walls compared to high-frequency sounds.
If you specifically require sound transmission through walls or amplification of low-frequency sounds, there are alternative solutions available. For example, you might consider using subwoofers or specialized low-frequency transducers for better low-frequency sound reproduction, and you could explore techniques like vibrations or resonance to transmit sound through solid objects. However, these methods are typically more complex and require specialized equipment and setup.