question about FFT bin index ?


    Aug 26 2006 | 9:19 pm
    I am reading a paper dealing with FFT.
    It says that "fft~ 1024 1024 0" will output bin index from 1, 2, 3, ....to 1023.
    I just don't know why there are only 1023 bin indexes instead of 1024. I thought there should be 1024 frequency bins with index from 1 to 1024 when the frame size is set to 1024. Am I wrong ? Or if the first frame is actually blank with index 0 to make 1024 index numbers in total ?
    Thanks.
    Chien-Wen

    • Aug 26 2006 | 9:27 pm
      Quote: Cheng Chien-Wen wrote on Sat, 26 August 2006 14:19
      ----------------------------------------------------
      > I am reading a paper dealing with FFT.
      > It says that "fft~ 1024 1024 0" will output bin index from 1, 2, 3, ....to 1023.
      >
      ----------------------------------------------------
      The bins are numbered 0 to 1023. (stated in the help file, but I just verified using capture~)
      mzed