Patent ID: 8496542

Claim:
A golf club head comprising: a striking face provided near a forward portion of said golf club head; a body portion connected to an aft portion of said striking face further comprising a crown, a sole, and a skirt, wherein at least one said striking face, said crown, said sole, or said skirt is made out of a second material having a second density; wherein a remainder portion of said striking face, said crown, said sole, or said skirt is made out of a first material having a first density; wherein said second density is less than said first density; and wherein said golf club head has a first peak frequency to volume ratio of greater than about 7.0 hertz/cc and less than about 15 hertz/cc; said first peak frequency to volume ratio is defined as a first peak frequency of a signal power diagram of the sound of said golf club head as it impacts a golf ball, divided by a volume of said golf club head.