Hi, I have a question about buffer function and about fft function.

If someone can help me, I would like to write equal functions in C language. Thanks.

[Walter Roberson]

With buffer overlap or without buffer overlap ?

Answer 1

[Walter Roberson]

Buffer without overlap is easy.

• take the length of the signal
• do an integer division by the buffer length to get the number of buffers
• take the signal length modula the buffer length
• if the modula is non-zero add one to the number of buffers
• allocate a chunk of memory that is (number of buffers times buffer length) long.
• memcpy the signal into the buffer
• if the modulo of the signal length and the buffer was non-zero then initialize the rest of the buffer to zero

[Mihajlo]

I would like to do it with overlap. Thank you.

[Mihajlo]

It says that It can be converted using MATLAB Coder, that I have. But I dont know how to do this.