The correct answer is Sound synthesizer.Music synthesizer, also called electronic sound synthesizer, Machine that electronically generates and modifies sounds, frequently with the use of a digital computer.Synthesizers are used for the composition of electronic music and in live performance.Additional InformationStampers:Picture Stamper is an application that allows to do just that but with an intuitive and easy to use user interface.Add the photos, logo and watermark text and let Picture Stamper.? Speakers:A computer speaker is an output hardware device that connects to a computer to generate sound.The signal used to produce the sound that comes from a computer speaker is created by the computer's sound card.Set top box:A set-top box is a hardware device that allows a digital signal to be received, decoded and displayed on a television.The signal can be a television signal or Internet data and is received via cable or telephone connection.