list_devices.py

import sounddevice as sd

def list_audio_devices():
    """
    Prints a list of all available audio devices and their properties.
    """
    print("Available audio devices:")
    # query_devices() returns a list of dictionaries, one for each device
    devices = sd.query_devices()
    
    for i, device in enumerate(devices):
        # Extract and print relevant information
        name = device['name']
        hostapi = device['hostapi']
        max_in = device['max_input_channels']
        max_out = device['max_output_channels']
        
        print(f"* ID {i}: {name}, Host API: {hostapi} (Max Input: {max_in}, Max Output: {max_out})")

def get_default_device_name():
    """
    Returns the name of the default input/output device.
    """
    # query_devices() with no arguments returns a list of all devices.
    # To get info on just the default device, you can use specific parameters.
    # A simpler way to get the *current* default device name after it's set
    # is to look at the default.device attribute
    
    # First, print all devices to let the user see IDs
    list_audio_devices()
    
    try:
        # Get the default device information
        default_device_id = sd.default.device
        # The default.device attribute can be an int or a pair of ints
        if isinstance(default_device_id, int):
            default_device = sd.query_devices(default_device_id)
            print(f"\nDefault device ID is: {default_device_id}")
            print(f"Default device name is: {default_device['name']}")
            return default_device['name']
        elif isinstance(default_device_id, tuple):
             # Handle separate default input/output devices
             in_id, out_id = default_device_id
             in_device = sd.query_devices(in_id)
             out_device = sd.query_devices(out_id)
             print(f"\nDefault Input ID is: {in_id}, Name: {in_device['name']}")
             print(f"Default Output ID is: {out_id}, Name: {out_device['name']}")
             return in_device['name'], out_device['name']
             
    except Exception as e:
        print(f"\nCould not determine default device name: {e}")
        return None


if __name__ == "__main__":
    # Ensure the library is installed: pip install sounddevice
    # You can also run `python -m sounddevice` in your terminal to see a list of devices.
    
    list_audio_devices()
    get_default_device_name()