blat 
(blăt)
(blăt)v. blat·ted, blat·ting, blats
v.tr.
1. To utter without thinking; blurt.
2. To sound or produce harshly or raucously: trombones blatting out a tune.
v.intr.
1. To cry, especially like a sheep; bleat.
2. To make a harsh or raucous noise.
[Imitative.]
blat n.