How to accurately measure the quality of a microphone

1、 Indicators for measuring the quality of microphones

To accurately measure the quality of a microphone, the following indicators need to be considered based on its usage scenario and requirements:

1. Frequency response: refers to whether the signal size output by the microphone is balanced at different frequencies. Poor frequency response will result in a decrease in the quality of the recorded sound.

2. Sensitivity: refers to the sensitivity of the microphone to capture sound. Corresponding sensitivity needs to be selected in the usage scenario.

3. Noise level: refers to the surface noise level output by the microphone, which can affect the sound quality for long-term recording.

4. Maximum sound pressure level: refers to the maximum sound pressure level that a microphone can handle, which needs to be noted when used in various high volume scenarios such as music musicians and speakers.

2、 How to measure the quality of a microphone

1. Frequency response testing

The microphone can be tested using a frequency response testing instrument. During testing, it is necessary to conduct audio-visual testing based on the sound effects at different frequencies, and evaluate the frequency response level of the microphone according to the test results.

2. Sensitivity and noise level testing

It is necessary to use a sound level meter to test the sensitivity and noise level of the microphone, in order to obtain the effective loudness and noise level of the microphone.

3. Testing of maximum sound pressure level

You can use a sound pressure gauge to test the upper limit of the microphone's output sound pressure.