We had a funny (atleast I thought it was funny) incident which also made me curious.
Playing a friendly on Sunday, one of the bowlers in the opposition, a spinner, was letting out a loud grunt at the point of delivery release. Very similar to what we see Tennis players do when hitting the ball. The batsman raised an objection that this was distracting him. The umpire (one of our team players of course) gave the bowler a warning that if he grunts again, he would be no-balled. The bowler tried controlling it but in the next over he bowled, he against let out a loud grunt and the umpire gave it as a no-ball which obviously lead to a mini argument on the field. the captains had to intervene to make the players understand that its just a friendly. We in the pavilion discussed it and there was a mutual agreement that there is no such rule against a bowler making noises at the point of the delivery.
Does anyone know of any rules around it?