Sound-signal refers to a type of signal that is made through sound waves. This signal is commonly used to indicate an alarm, warning, or message. There are several synonyms for the word sound-signal, including audio signal, tone signal, audible signal, and acoustic signal. Each of these terms refers to the same type of signal and is often used interchangeably. Other terms that may describe a sound-signal include noise, beep, buzz, and chirp. Regardless of the specific term used, a sound-signal is an essential means of communication in many settings and is used to convey important information to individuals in both public and private spaces.