# Is there any way to find difference between two same sounds of different people? [closed]

I am trying to understand and find a way to distinguish two same sounds of different people by some physics formula, so could you guys help me?

OK I'll try to explain my question in this way that, for example, there are two people A and B are reading this sentence aloud. "Crackers are Cracking for Crown". And if we want to find difference by applying any kind of physics, maths or computer science formula, so and then later we can say this was person A sound or B etc.

But while finding the difference these points should not matter:

1- volume of the sound
2- pronunciation (obviously it understandable)
3- speed of the sound
4- same voice or different

• Have you ever heard of voice-recognition algorithms ? – kaka May 21 '14 at 3:26
• You will have more luck in SP.SE. – Davidmh May 21 '14 at 6:19
• @Kaka: Yes I have heard, but I'm researching physics so I can implement in my computer program. – c-sharp May 21 '14 at 13:44
• Related: physics.stackexchange.com/q/78827/2451 and links therein. – Qmechanic Jun 6 '16 at 7:19
• I'm voting to close this question as off-topic because it is not about physics. – Emilio Pisanty Aug 9 '16 at 13:18