1. The increase in bass response when a sound source is close to a directional microphone.

1. A method of delivering DC voltage to condenser microphones through an audio cable.

2. A polar pattern that picks up sound from all directions.

3. The inherent noise produced by a microphone when no sound is present.

4. The sensitivity of a microphone to sound from different directions.

4. An electronic device that amplifies a microphone's signal to a usable level.

5. A type of microphone that uses vacuum tubes to amplify the audio signal.

6. A three-pin connector commonly used in professional audio equipment.

7. A switch that disconnects the ground connection of a microphone to eliminate hum caused by ground loops.

8. A device that converts one form of energy into another, such as converting sound into an electrical signal.