If a new car it could have a faulty clutch or older higher mileage car down to wear. Mine is nice and quiet.
Might be slight oil leak on the clutch plate leaking in, then oil being removed when driving.(gasket problem)
Could be clutch plate worn or warped, not installed right, or clutch bearing (though that gives a screaming whirling sound), or actuator operation of clutch, there are a whole host of problems difficult to analyse with your information given.
I would advise going back to the dealership if under warranty. clutch noises can start small, and then the problem gets worse, so best get it looked at now.