Noise when the recording volume is at 0

Audacity Help Forum Windows
1

Is it normal to have a noise when I set the microphone volume to 0 and amplify the audio at 50DB?

I’m a beginner in this world of audio, I looked elsewhere and found no answer.

link: https://soundcloud.com/andre-luiz-435281840/ruido

2

Analog recordings always have some amount of background noise. When you amplify by 50 dB, it is to be expected that the recorded noise will get much louder.

3

It’s good to avoid extremes of volume correction.

What’s the microphone and how is it connected?

Koz

4

Thanks for the answer.
Answering the question, it is connected to the 3.5mm input of a sound card, the strix soar.
Microphone is a boya cardioid by mm1