1 files changed, 48 insertions, 2 deletions
diff --git a/examples/device/audio_test_multi_rate/src/plot_audio_samples.py b/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
index 1f33a003e..f35cfa311 100755
--- a/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
+++ b/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
@@ -5,6 +5,52 @@ import numpy as np
 import platform
 import csv
 
+
+def find_windows_input_device(name_hint, channels, preferred_apis=None):
+    """Pick a Windows input device index from query_devices() output."""
+    preferred_apis = preferred_apis or []
+    name_hint = name_hint.lower()
+    candidates = []
+
+    for index in range(len(sd.query_devices())):
+        device_info = sd.query_devices(index)
+        max_input_channels = int(device_info.get('max_input_channels', 0))
+
+        if max_input_channels < channels:
+            continue
+
+        device_name = str(device_info.get('name', '')).lower()
+        if name_hint not in device_name:
+            continue
+
+        score = 0
+
+        # Prefer exact channel matches (for example 1ch source over a 4ch source).
+        if max_input_channels == channels:
+            score += 100
+        else:
+            score += 10
+
+        hostapi_index = int(device_info.get('hostapi', -1))
+        api_name = ''
+        if hostapi_index >= 0:
+            hostapi_info = sd.query_hostapis(hostapi_index)
+            api_name = str(hostapi_info.get('name', '')).lower()
+
+        for priority, api_hint in enumerate(preferred_apis):
+            if api_hint in api_name:
+                score += 50 - priority
+                break
+
+        candidates.append((score, index))
+
+    if not candidates:
+        raise ValueError(
+            'No input device matching hint="{}" with at least {} channels'.format(name_hint, channels)
+        )
+
+    return max(candidates, key=lambda item: item[0])[1]
+
 if __name__ == '__main__':
 
     # If you got "ValueError: No input device matching", that is because your PC name example device
@@ -15,8 +61,8 @@ if __name__ == '__main__':
     duration = 100e-3    # Duration of recording
 
     if platform.system() == 'Windows':
-        # MME is needed since there are more than one MicNode device APIs (at least in Windows)
-        device = 'Microphone (MicNode) MME'
+        # Match by substring to support names like "Microphone (2- MicNode)".
+        device = find_windows_input_device('micnode', channels=1, preferred_apis=['mme', 'wasapi', 'wdm-ks'])
     elif platform.system() == 'Darwin':
         device = 'MicNode'
     else: