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31 lines
774 B
Python
31 lines
774 B
Python
3 years ago
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import numpy as np
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import simpleaudio as sa
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# calculate note frequencies
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A_freq = 440
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Csh_freq = A_freq * 2 ** (4 / 12)
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E_freq = A_freq * 2 ** (7 / 12)
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# get timesteps for each sample, T is note duration in seconds
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sample_rate = 44100
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T = 0.25
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t = np.linspace(0, T, T * sample_rate, False)
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# generate sine wave notes
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A_note = np.sin(A_freq * t * 2 * np.pi)
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Csh_note = np.sin(Csh_freq * t * 2 * np.pi)
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E_note = np.sin(E_freq * t * 2 * np.pi)
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# concatenate notes
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audio = np.hstack((A_note, Csh_note, E_note))
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# normalize to 16-bit range
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audio *= 32767 / np.max(np.abs(audio))
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# convert to 16-bit data
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#audio = audio.astype(np.int16)
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# start playback
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#play_obj = sa.play_buffer(audio, 1, 2, sample_rate)
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# wait for playback to finish before exiting
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#play_obj.wait_done()
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