Monophonic sound refers to audio that consists of a single channel. This means that all sound is produced from one source, creating a uniform sound experience. Monophonic sound is often used in simple audio systems, such as early radios and some musical instruments, where only one note or voice is played at a time. In contrast to stereo or surround sound, which use multiple channels to create a more immersive experience, monophonic sound delivers a straightforward listening experience. It is commonly found in older recordings and certain types of music, where clarity and simplicity are prioritized over complex soundscapes.