What is a microphone

A microphone is a device capable of converting sound vibrations. Nowadays, there is a vast variety of microphones available, making the selection process quite challenging.

What is a microphone

Typically, the term "microphone" is associated with a tool utilized by performers during live performances. Nevertheless, this particular device is actually incorporated in nearly all types of equipment. Its primary function is to convert acoustic vibrations into an electrical signal. The microphone is an essential component in the process of sound recording.

On what grounds are the devices classified

Microphones can be classified based on the technology used for sound processing:

1. Capacitor microphones utilize a flexible membrane (film) and a permanent electrode in the form of a plate to create a capacitor. When sound vibrations cause a change in capacitance, an electrical signal is generated and then transmitted to the recorder as a pulse.
2. Dynamic microphones have a robust construction and consist of a diaphragm attached to a coil. These components are in the presence of a magnetic field. The principle of operation is that sound vibrations cause oscillations in the diaphragm, which in turn generates a voltage on the coil. This voltage is then transmitted to the recorder as pulses.

BACKGROUND! In order for condenser devices to function, they need to be linked to a source of electricity.

Condenser microphones are known for their ability to capture sound with high fidelity. They are highly responsive to changes in vocal timbre, allowing them to preserve the unique characteristics of each voice. These microphones are commonly found in recording studios, where sound quality is of utmost importance. However, it is important to note that excessively loud sound waves can negatively impact the recording quality. One advantage of condenser microphones is their lightweight design.

On the other hand, dynamic microphones are less sensitive but can handle higher sound waves. This makes them a popular choice for live performances on stage. They are also suitable for home use, as they are designed to withstand various environmental conditions. Dynamic microphones are known for their solid construction and durability.

In addition to different sound processing technologies, microphones can also vary in terms of their membrane size:

1. Small-membrane microphones have a smaller membrane size.
2. Medium-membrane microphones have a medium-sized membrane.
3. Cropnomembrane microphones feature a cropped membrane.

IMPORTANT. The sensitivity of a microphone greatly affects the quality of the recording. If a microphone is too sensitive, it may pick up unwanted background noises. These types of devices are best suited for use in specially designed environments.

There are also sound devices that have a certain degree of directionality, meaning that the sound can be perceived within a limited angle range – either for input or output. These devices can be categorized as either unidirectional or bidirectional. Unidirectional devices are often used in concerts to shield the speaker from external sounds coming from the venue. On the other hand, bidirectional devices are used for communication purposes with another person. If a device does not have any limitation in terms of angle range, it can be considered as nondirectional.

For transmitting signals, different types of cables are utilized, and the following connectors are primarily used for connecting these cables:

1. TRS (mini-jack). This connector is used for transmitting audio signals and has a 3.5 mm diameter.
2. USB. This is a universal connector that allows for connection to various computing equipment.
3. XLR-3. This type of connector is commonly used in professional audio equipment. It provides the highest quality audio signal compared to the previous options.

What are the current types of microphones?

With the advancements in technology, acoustic devices have evolved to possess the capability to store specific data and settings. Contemporary equipment enables the filtration of unwanted noise and facilitates the transmission and capture of even the most subtle acoustic vibrations.

The studio microphones are the most expensive types and are commonly found in the show business and movie industry. They possess excellent sensitivity and have the ability to capture non-standard sound waves while amplifying quiet ones. In the field of show business, stage microphones are also utilized, although they are slightly less advanced than studio microphones and are more affordable.

Measuring microphones are designed specifically for capturing different sound vibrations. These devices have a narrow focus and are typically utilized in industrial equipment. For covert listening purposes, mini-microphones are the smallest type of device available.

Radio headset microphones are used for telephone sets. The advantage of this type is the wireless transmission technology. If there is a need to capture faint sound vibrations, closed-design microphones (capsules) are used, which are commonly found in headphones and smartphones.

BACKGROUND! Hydrophones are employed in capturing and transmitting sound vibrations beneath the water surface. These instruments are specifically designed acoustic devices that are installed in sonars, echo sounders, and other similar applications.

In settings with elevated levels of noise, laryngophones are utilized. This special type of equipment is employed in production sites, airplanes, and other areas. Sound vibrations are conveyed via a delicate transducer.

Tips for choosing

When selecting a microphone, it is necessary to determine its intended usage. For tasks such as recording audio in the background or voiceovers, it is advisable to opt for condenser microphones. These types of microphones are more sensitive and are designed for use in environments without any unwanted noise, unlike dynamic microphones, which are less likely to capture external sound vibrations.

It is not recommended to purchase expensive professional models if there is no additional equipment available for connection and processing. Without the proper conditions, the microphone will not perform up to its stated specifications.

In addition to the microphone, it is also important to consider additional accessories. It is advisable to choose reliable and well-known manufacturers of acoustic devices.