What is a Contact Microphone?
A contact microphone, also known as a piezo microphone or a pickup microphone, is a type of microphone that picks up sound vibrations directly from the surface it is attached to, rather than capturing sound waves in the air like traditional microphones. Contact microphones are designed to convert mechanical vibrations into electrical signals, allowing them to capture sound from solid objects such as guitars, drums, walls, and even human bodies.
How does a Contact Microphone work?
Contact microphones work on the principle of piezoelectricity, which is the ability of certain materials to generate an electric charge in response to mechanical stress. When a contact microphone is attached to a surface, such as a guitar body, the vibrations from the instrument cause the piezoelectric element in the microphone to generate an electrical signal that corresponds to the sound produced. This signal is then amplified and converted into audible sound by a speaker or recording device.
Where are Contact Microphones commonly used?
Contact microphones are commonly used in a variety of applications where traditional microphones may not be suitable. Some common uses of contact microphones include:
– Recording acoustic instruments such as guitars, pianos, and drums
– Capturing sound from vibrating surfaces such as windows, walls, and pipes
– Monitoring machinery and equipment for signs of wear and tear
– Recording sound from underwater environments or other challenging acoustic environments
What are the advantages of using a Contact Microphone?
There are several advantages to using a contact microphone over traditional microphones, including:
– Improved sound quality: Contact microphones can capture sound with greater clarity and detail, especially when recording acoustic instruments or capturing vibrations from solid objects.
– Noise reduction: Contact microphones are less susceptible to background noise and interference, making them ideal for recording in noisy environments or isolating specific sounds.
– Versatility: Contact microphones can be used in a wide range of applications, from music recording to scientific research, making them a versatile tool for audio professionals and hobbyists alike.
How do Contact Microphones differ from other types of microphones?
Contact microphones differ from other types of microphones in several key ways, including:
– Pickup method: Contact microphones pick up sound vibrations directly from surfaces, while traditional microphones capture sound waves in the air.
– Sensitivity: Contact microphones are often more sensitive to low-frequency vibrations and can capture sounds that may be difficult for traditional microphones to pick up.
– Placement: Contact microphones are typically attached directly to the surface of an object, allowing for precise placement and control over the sound being captured.
What are some popular brands of Contact Microphones?
There are several popular brands of contact microphones on the market, including:
– Barcus Berry: Known for their high-quality contact microphones for musical instruments such as guitars and violins.
– DPA Microphones: A well-respected brand that offers a range of contact microphones for professional audio recording and sound reinforcement.
– Schertler: Specializing in acoustic amplification, Schertler offers a variety of contact microphones for instruments and live sound applications.
– K&K Sound: A popular choice among acoustic musicians, K&K Sound offers a range of contact microphones and pickups for guitars, mandolins, and other stringed instruments.