Dynamic microphone

Definition

A dynamic microphone is a type of microphone that converts sound into electrical signals using electromagnetic induction. It's widely known for its durability and ability to handle high sound pressure levels, making it ideal for live performances and studio recordings. Dynamic microphones are less sensitive to ambient noise compared to other types, which allows for clearer sound capture in noisy environments.

5 Must Know Facts For Your Next Test

1. Dynamic microphones use a diaphragm attached to a coil that moves within a magnetic field to produce an electrical signal.
2. These microphones are particularly effective for miking loud sources, like drums or guitar amplifiers, due to their high sound pressure handling capacity.
3. Dynamic microphones typically do not require external power, making them convenient for live performances.
4. They are generally more rugged and can withstand rough handling and extreme conditions better than condenser microphones.
5. Common examples of dynamic microphones include the Shure SM58 and the Shure SM57, which are staples in both live sound and studio recording.

Review Questions

• How do dynamic microphones differ from condenser microphones in terms of design and application?
  • Dynamic microphones use electromagnetic induction to convert sound into electrical signals, making them more robust and less sensitive than condenser microphones. While dynamic mics are great for capturing high sound pressure levels in live environments, condenser mics offer greater sensitivity and frequency response, making them better suited for studio recordings of vocals and acoustic instruments. The choice between them depends on the specific audio application and the environment in which they are used.
• What factors should be considered when selecting a dynamic microphone for live performances?
  • When choosing a dynamic microphone for live performances, consider factors like durability, sound pressure level handling, and polar pattern. A robust mic is essential for surviving the rigors of live shows, while one with a cardioid polar pattern can help reduce feedback by picking up sound primarily from the front. Additionally, consider the mic's frequency response to ensure it complements the instruments or vocals being amplified.
• Evaluate the impact of using dynamic microphones in noisy environments compared to other types of microphones.
  • Dynamic microphones excel in noisy environments due to their lower sensitivity to ambient sounds, which helps isolate the desired audio source more effectively than condenser or ribbon microphones. This characteristic makes them ideal for situations like live concerts or events where background noise is prevalent. By focusing on direct sound while minimizing unwanted noise, dynamic microphones enhance clarity and intelligibility in recordings and performances, making them a preferred choice for many audio professionals.

Related terms

Condenser microphone: A condenser microphone uses a capacitor to convert acoustic energy into electrical energy, offering greater sensitivity and frequency response compared to dynamic microphones.

Polar pattern: The polar pattern of a microphone describes its sensitivity to sound from different directions, influencing how it captures audio in various environments.

Phantom power: Phantom power is a method of supplying power to condenser microphones through the audio cable, allowing them to operate without needing a separate power source.