What is the primary function of an output transducer in signal processing?

The primary function of an output transducer in signal processing is to convert input energy of one form to output energy of another. This process is essential in various applications, such as converting electrical signals into sound waves in speakers or transforming digital signals into analog signals that can be heard. Output transducers are crucial in bridging different domains of energy, ensuring that the information encoded in one form (like electrical signals) is accurately represented in another form (like sound).

The other choices illustrate different functions related to audio engineering and signal processing but do not define the core role of an output transducer. For example, while amplifying electrical impulses is related to signal strengthening, this is specifically a role for amplifiers rather than transducers. Recording music digitally pertains to capturing sound for later playback rather than transforming energy types. Mixing audio tracks involves combining multiple audio sources into a single output, which is a process distinct from the fundamental conversion that output transducers perform.