BT-21752-000

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Microphones are essential equipment for producing sound recordings and carrying out live sound reinforcement. One such microphone is the BT-21752-000, manufactured specifically to meet the requirements of broadcast, theatre, and studio applications. In this article, we discuss the application field and working principle of this microphone.

The Application Field of the BT-21752-000

The BT-21752-000 microphone is designed for use in a variety of professional audio applications, including broadcast, theatre, and studio sound reinforcement. It has a rugged construction, making it ideal for on-location use, and is capable of handling high sound pressure levels without distortion.

The microphone is ideal for vocal applications, due to its high sensitivity to speech frequencies, and its cardioid polar pattern helps to reduce pickup of unwanted ambient noise. The wide frequency range of the BT-21752-000 makes it suitable for capturing the full range of frequencies, resulting in a broad, well-rounded sound.

The Working Principle of the BT-21752-000

The BT-21752-000 microphone uses an electro-mechanical transducer to convert sound pressure into electrical signals. The transducer consists of a diaphragm, a magnet, and a coil of wire. When sound waves strike the diaphragm, it vibrates and causes the magnet to move in relation to the coil of wire. This induces an electrical voltage, which varies with the movement of the diaphragm. This voltage is amplified and converted into an audio signal.

The BT-21752-000 features a switchable low-frequency roll-off filter, which helps to reduce the amount of low-frequency noise in the signal. The filter cuts off signals below a specific frequency, which is adjustable via a switch on the rear of the microphone.

Conclusion

The BT-21752-000 is a rugged, professional-grade microphone designed to meet the requirements of broadcast, theatre, and studio sound reinforcement applications. Its electro-mechanical transducer converts sound waves into electrical signals, which are then amplified and converted into an audio signal. The switchable low-frequency roll-off filter helps to reduce the amount of background noise in the signal, allowing the microphone to pick up only the intended frequencies. With its high sensitivity, wide frequency range, and rugged construction, the BT-21752-000 is a valuable tool for any professional audio engineer.

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