How to choose the correct measuring microphone?

Microphone types: There are three main types of measuring microphones: capacitive, piezoelectric, and dynamic. Capacitive microphones have the characteristics of high sensitivity and low noise, making them suitable for situations that require high-precision measurements; Piezoelectric microphones are suitable for measuring high amplitude sound pressure, but they have high noise levels and are suitable for measuring impact pressure and burst pressure; The dynamic microphone has a simple structure, high stability, and is suitable for language broadcasting and sound amplification.

Frequency response: The frequency response range of the measuring microphone should match the frequency range of the sound being measured. For example, the frequency response of DPA 4007 is 20 Hz-40 kHz, which is suitable for most measurement needs.

Directionality: Select omnidirectional, unidirectional, or bidirectional microphones according to measurement requirements. Omnidirectional microphones can receive sound from all directions, making them suitable for recording all-round sound; Unidirectional microphones are suitable for situations that require shielding from surrounding interference.

Sensitivity and signal-to-noise ratio: High sensitivity microphones can capture finer sound changes, but also require higher signal processing capabilities. A microphone with high signal-to-noise ratio can reduce background noise and improve measurement accuracy.

Brand and reliability: Choose well-known microphone brands such as MicW M215, DPA 4007, and Beyerdynamic MM1, which have a high reputation and good performance in the professional audio field.

Usage scenario: Choose the appropriate microphone according to the specific usage scenario. For example, theaters, recording studios, and control rooms require high-precision and stable microphones; For dynamic scenes or situations that require portability, wireless or lightweight microphones are more suitable.

By considering the above factors comprehensively, the most suitable measuring microphone for one's needs can be selected to ensure the accuracy and reliability of the measurement.