Add 4 channel microphone audio example using software encoding

1 files changed, 26 insertions, 0 deletions

diff --git a/examples/device/audio_4_channel_mic/src/plot_audio_samples.py b/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
new file mode 100644
index 000000000..0bd6f3b5d
--- /dev/null
+++ b/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
@@ -0,0 +1,26 @@
+import sounddevice as sd
+import matplotlib.pyplot as plt
+import numpy as np
+
+if __name__ == '__main__':
+
+  #  Currently tested for Windows - on Linux try to find the device or use default device if not clearly listed
+  #  devList = sd.query_devices()
+  #  print(devList)
+
+    fs = 48000  												# Sample rate
+    duration = 100e-3                     						# Duration of recording
+    device = 'Microphone (MicNode_4_Ch), Windows WDM-KS' 		# WDM-KS is needed since there are more than one MicNode device APIs (at least in Windows)
+
+    myrecording = sd.rec(int(duration * fs), samplerate=fs, channels=4, dtype='int16', device=device)
+    print('Waiting...')
+    sd.wait()  # Wait until recording is finished
+    print('Done!')
+
+    time = np.arange(0, duration, 1 / fs)  # time vector
+    plt.plot(time, myrecording)
+    plt.xlabel('Time [s]')
+    plt.ylabel('Amplitude')
+    plt.title('MicNode 4 Channel')
+    plt.show()
+    
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