def create_samples(self):
        print "creating samples"
        def convert_to_zero(a):
            return a/32768.0
        sample_list = list()
        while len(self.sound_data) >= self.chunk * 2:
            chunk_data = self.sound_data[:self.chunk * 2]
            self.sound_data = self.sound_data[self.chunk * 2:]
            sample = np.fromstring(chunk_data, dtype=np.int16)
            fixed = np.apply_along_axis(convert_to_zero, 0, sample)
            sample_list.append(fixed)
        print "samples created"
        return np.hstack(sample_list)