From 1fc308fb87935e6260349d5721ee81c046b68461 Mon Sep 17 00:00:00 2001 From: HiFiPhile Date: Sat, 23 May 2026 19:22:39 +0200 Subject: tweak examples Signed-off-by: HiFiPhile --- .../src/plot_audio_samples.py | 50 +++++++++++++++++++++- 1 file changed, 48 insertions(+), 2 deletions(-) (limited to 'examples/device/audio_test_multi_rate/src/plot_audio_samples.py') 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: -- cgit v1.3.1