![]() The first note of a major scale isĬalled the key note of the scale. ![]() The first scale type is known as a major scale, which is made up of seven notes and a repeated octave. As with chords, there are two scale types that are of particular importance in Western music theory. In the context of scales, the minor second (one semitone) is also referred to as a half step and the major second (two semitones) as a whole step. In the following, we only consider scales that are subsets of the chromatic scale, where the scale steps can be specified in semitones. max ( x ) return x duration = 0.25 Fs = 4000 pitches = x = generate_sinusoid_scale ( pitches = pitches, duration = duration, Fs = Fs ) print ( 'Chromatic scale', flush = True ) ipd. ![]() pi * omega * t )) x = amplitude_max * x / np. ![]() arange ( 0, N ) / Fs x = for p in pitches : omega = 2 ** (( p - 69 ) / 12 ) * 440 x = np. Import numpy as np import IPython.display as ipd def generate_sinusoid_scale ( pitches =, duration = 0.5, Fs = 4000, amplitude_max = 0.5 ): """Generate synthetic sound of scale using sinusoids Notebook: C5/C5S1_Scales_CircleFifth.ipynb Args: pitches (list): List of pitchs (MIDI note numbers) (Default value = ) duration (float): Duration (seconds) (Default value = 0.5) Fs (scalar): Sampling rate (Default value = 4000) amplitude_max (float): Amplitude (Default value = 0.5) Returns: x (np.ndarray): Synthesized signal """ N = int ( duration * Fs ) t = np. ![]()
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