There could be several reasons why your voice may sound different or weird when it comes out of a microphone. Here are a few possibilities:
Microphone quality: The microphone you're using may not accurately capture the nuances of your voice or may have its own frequency response characteristics. Cheaper or lower-quality microphones might distort or alter the sound in some way, leading to a different perception of your voice.
Acoustic environment: The environment in which you're recording can greatly affect the sound of your voice. The room's acoustics, presence of echoes, background noise, and other factors can impact the way your voice is picked up by the microphone and how it is perceived.
Distance and positioning: The distance and positioning of the microphone relative to your mouth can also influence the sound. If you're too close or too far from the microphone, it can result in differences in volume, clarity, and frequency response.
Monitoring and playback: The way you monitor and listen to the recorded audio can affect your perception of your voice. If you're using headphones or speakers with poor sound quality or mismatched frequency response, it may alter the way you perceive your voice.
Psychological factors: It's important to consider that when we hear our own voice through recordings, it can sound strange or unfamiliar to us. This is because when we speak, we hear our voice partially through bone conduction, which gives us a different perception compared to hearing it externally. So hearing your recorded voice without the internal bone conduction component can be surprising or unsettling.
If you're consistently experiencing issues with the sound of your voice when recorded, it might be helpful to experiment with different microphones, adjust microphone placement, optimize the recording environment, and ensure accurate monitoring to get a clearer representation of your voice.