You have to define eactly, mathematically what you want when you say "maximum frequecncy component". This is vague and imprecise. Obviously the max frequency will be the sampling frequency for an arbitrary sound waveform.
Alternatively, perhaps you want the frequency at which the sound has maximum power. This is what @Mahesh Chilla's (probably chatbot) code does. That is an alternate definition. For example perhaps it's a song with frequencies out to 20 kHz but the power of higher frequencies is usually low and maybe there is a strong singer's voice at 1 kHz that has most of the power. So is the answer you want 20 kHz or 1 kHz?
So you really need to explain what you want and why you want it so we know the full context and can give you the right answer.
This looks like a homework problem. If you have any questions ask your instructor or read the link below to get started:
Obviously we can't give you the full solution if it's homework, because you're not allowed to turn in our code as your own.
