analog signal
signal where the time-varying feature is an analogous representation of some other time-varying quantity
en-GB/ˈænəˌlɒɡ ˈsɪɡnəl/
en-US/ˈænˌəlɑɡ ˈsɪɡnəl/
signal where the time-varying feature is an analogous representation of some other time-varying quantity