Microphone is not working well

[ZinThwe_Aung]

Before I start the meeting, my mic works. And when I start the meeting, my microphone works but not well. After waiting other people coming into zoom meeting, I start to speak, but my mic is dead (I surely unmute my mic, and choose the right mic), I have to struggle for 1 or 2 mins by speaking repeat and after other people hear my voice, I have to start the real conversation.
But during the meeting, if someone ask me a question, I reply her immediately, but they couldn't hear my voice at the beginning (like very low voice)
I use zoom for 3 years, I haven't faced this kind of issue.
I uninstall the zoom app and download a new version. But it is still not working.
(I have tried the troubleshoot guideline)

[storyhub]

As an audio and broadcast engineer I can tell you that computer audio can be very complicated. Try turning on original sound. Since you didn't state what device is being used I will assume a PC.

Here is insight to setting up original sound.
https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0064198
Note that original sound has to be turned on in 2 places. Don't forget to click the Original Sound for Musicians button to toggle this on or off in the top-left corner of the meeting window for the desktop client. Also, check your OS for audio enhancements and be sure they are turned off.

If this works please click accept as a solution.

If this does not work then you have other hardware related issues and need to give more details about hardware and OS.

[ZinThwe_Aung]

My device is a Windows laptop, and I’m using the built-in microphone.

I’ve already enabled Original Sound for Musicians in both places, and I’ve turned off all audio enhancements in my operating system as you suggested.

However, my problem is still happening. When I keep talking, sometimes my voice suddenly becomes very low in volume for a few seconds, and then it returns to normal. There is no background noise during this time, and I am speaking at a steady distance from the microphone. This happens even when I use earphones with a microphone.

This problem only happens in Zoom. Other apps like Voice Recorder and messaging apps work fine without this issue.