How to play a NumPy array with audio directly to a speaker.

numpy_array_to_speakers.py

# Use the sounddevice module
# http://python-sounddevice.readthedocs.io/en/0.3.10/

import numpy as np
import sounddevice as sd
import time

# Samples per second
sps = 44100

# Frequency / pitch
freq_hz = 440.0

# Duration
duration_s = 5.0

# Attenuation so the sound is reasonable
atten = 0.3

# NumpPy magic to calculate the waveform
each_sample_number = np.arange(duration_s * sps)
waveform = np.sin(2 * np.pi * each_sample_number * freq_hz / sps)
waveform_quiet = waveform * atten

# Play the waveform out the speakers
sd.play(waveform_quiet, sps)
time.sleep(duration_s)
sd.stop()

Is something similar possible by converting pydub audio segment to numpy array and then playing that?

below code works fine for me. Here wdata is ndarray and sr is sampling rate. for read scipy is used and playing pyaudio is used.

import pyaudio
from scipy.io import wavfile

sr, wdata=wavfile.read('house_lo.wav')

p = pyaudio.PyAudio()
stream = p.open(format = p.get_format_from_width(1), channels = 1, rate = sr, output = True)
stream.write(wdata)
stream.stop_stream()
stream.close()
p.terminate()

Is something similar possible by converting pydub audio segment to numpy array and then playing that?

Just use
arr = my_audio_segment.get_array_of_samples() sd.play(arr, my_samplerate)