It is not like when you try to shift a manual stick without the clutch. But a lot lighter than that varying in amplitude (louder and lower) and probably is only there when the engine is cold (Because I don't seem to observe it after I have driven a few miles).
How I confirmed? On neutral gear, I paddled the gas the sound goes louder but when I press the clutch and then paddle there is no sound.
So does it call for a gear box repair?
PS: and yes I could observe this back when I used to turn the A/C on, back then the sound was very low and when I would press the clutch it would disappear.
If this is a gear box repair thing can I delay it? or it would cause nine stitches later on?