Speech analysis is when someone listens to what another person is saying and tries to understand it better. It's like if you were talking and I was paying careful attention to the words you were saying so I could understand your message.
Sometimes people use machines and computer programs to help with speech analysis. These machines can listen to what people are saying and recognize different sounds and patterns. Then they can tell us things like how fast someone is talking, whether they sound happy or sad, or even what language they are speaking in.
Speech analysis can help us learn more about how people communicate, and how we can communicate better with each other. It can also help us design things like speech recognition systems, which are programs that can understand and respond to what people are saying.