A sound detector is a device that is used to detect sounds and convert them into an electrical signal. Some common synonyms for the term sound detector are sound sensor, audio sensor, acoustic sensor, and sound receiver. The term sound sensor is the most widely used synonym and is commonly used in the fields of electronics, engineering, and science. An acoustic sensor is a type of sound detector that is used in various applications, including industrial automation, security systems, and medical equipment. A sound receiver is another synonym used for a sound detector and is commonly used in the field of telecommunications. Ultimately, no matter the synonym used, a sound detector is an essential tool for detecting and analyzing sound.