Friday, March 5, 2010

Clomid Hot Flashes After Ovulation

Python and Python

W zasadzie nie wiem jak przetłumaczyć "Beat" - hitting, rhythm? I wrote a script looking for beats in the audio file. As a material for analysis served as the first 10 seconds the song. Beat stroke is defined as the instantaneous power signal, which is perceived by the ear as a louder sound. Read more here:
  • http://www.gamedev.net/reference/programming/features/beatdetection/
  • __author__ = "daniel"
  • __date__ = "2010-03-04 0:21:00 $ $"
  • scipy.io import from import
  • wavfile matplotlib.pyplot as pyplot
  • import numpy if __name__ == "__main__": # load file
  • fs, data = wavfile.read ("/ home/daniel/Muzyka/steady10s.wav ")
  • # combining two channels into one
  • dane.shape
  • print data = data [:, 0] / 2.0 + data [:, 1] / 2.0
  • # normalization
  • data = data / max (data)
  • # calculate the energy carried by the
  • signal data = data ** 2
  • # of samples will be enough to jump at the analysis
  • k = fs / 10
  • #
  • analysis window length N = 2 ** 10
  • i = 0 # number of samples in the file length
  • , = dane.shape
  • # const, the number of times greater energy value must be considered in order to signal was too beat C = 2
    average = [] # Hosted by imgur.com moments in which you found the beat beats
    = [] while # check the last 42 averaging, ie, ~ 1s
    if (sum (average [-42:]) / 42 * C # print "Beat @", i * k + N / 2, "and", and beats . append (i)
    i + = 1
     
    numpy.array average = (average)
    # scaling ybeats to 2 times the average energy at a given point (for clarity)
    numpy.ones ybeats = (shape = len (beats))
    for i, b in enumerate (beats):
    ybeats [i] *= satisfactory [b] * 2 #

    drawing graphs (very similar to Matlab)
    pyplot.plot (average)
    pyplot.hold (True)
    pyplot.stem (beats ybeats, 'k')
    pyplot.title ("Beats")
    pyplot.savefig ("/ home/daniel/Obrazy/steady10sbeats.png)
    pyplot.show ()
    And here is the result:
    Luckily Steady As She Goes is a very clear rhythm in the beginning, so it is easy to detect. The next step will be to analyze more difficult material.


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