👉 Whisperproof refers to a device or product that is capable of transmitting sound at a very low level, often below 80 decibels (dB), so that it cannot be heard by normal human hearing. This technology can help protect people from certain sounds and environments, such as in noisy areas or when communicating with animals or birds. Whisperproof devices are typically made of materials like rubber or plastic, and they have a high-frequency noise reduction filter to reduce the sound level.
