Final answer:
A device used to input audio into a computer is called a microphone, with wireless body microphones being common for professional use. They capture sound for amplification or recording and can be managed by a Sound Board Operator.
Step-by-step explanation:
The type of device you would use to input audio into your computer or digital device is typically called a microphone. One of the most common microphones for professional use is the wireless body microphone, which is discreetly attached to an individual. These microphones can capture a wide range of sounds, from a person speaking to playing music from a rock or rap music CD or an mp3 file. They are used extensively in theatre productions and can pick up sound and convert it to an electrical signal, which could even be displayed on an oscilloscope for analysis.
Using a microphone, actors in a play or a musical can have their voices amplified without the burden of handling the device. Each microphone has its number and is managed by a Sound Board Operator to control when it's turned on or off. Body microphones are sensitive and useful but require careful handling to ensure that they do not malfunction and produce unwanted noise. It's important to secure the microphone close to the mouth for the best sound capture.