Hey there! Let's break down how to solve your two problems—setting up a shortcut on your Logitech keyboard to switch audio devices, and building a custom solution with code for that tedious manual switching (especially mid-game). I've got you covered.

一、用罗技G HUB配置快捷键 #

If you're using a Logitech gaming keyboard, the G HUB software lets you bind a macro script to any key for this task:

• Fire up Logitech G HUB and select your keyboard from the device list.
• Head to the「Key Assignments」tab, then pick a key you want to repurpose (like a spare function key or a combo like Fn+F12).
• Instead of choosing a standard function, select「Macro」>「Create New Macro」.
• Set the macro type to「Script Macro」, then paste this VBScript into the editor:

Set oShell = CreateObject("Wscript.Shell")
oShell.Run "powershell -Command ""$devices = Get-AudioDevice -Playback; $current = Get-AudioDevice -Playback -Default; $next = $devices | Where-Object { $_.ID -ne $current.ID } | Select-Object -First 1; if ($next) { Set-AudioDevice -Playback $next.ID }""", 0, True

• Important prep step: Before this works, open PowerShell as Administrator and run Install-Module -Name AudioDeviceCmdlets -Scope CurrentUser to install the required audio device module.
• Save the macro (name it something like "Cycle Audio Devices"), assign it to your chosen key, and you're done! Test it out—pressing the key should cycle through your available playback devices.

二、编程实现自定义切换快捷键 #

If you want more control (or don't want to rely on G HUB), here are two solid coding approaches:

方案1：AutoHotkey (Beginner-Friendly) #

AutoHotkey is perfect for quick, lightweight shortcut scripts:

• Download and install AutoHotkey (it's free and straightforward).
• Create a new text file, rename it to AudioSwitcher.ahk, and paste this code:

; Bind Ctrl+Alt+S to switch playback devices
^!s::
    SoundSet, +1, , PLAYBACK, ; Cycles to the next available playback device
    return

• Double-click the .ahk file to run it. Now pressing Ctrl+Alt+S will switch your default audio device instantly.
• Bonus: If you want to tie this to your Logitech keyboard, compile the script to an EXE (right-click the .ahk file >「Compile Script」) and assign that EXE to a key in G HUB.

方案2：Python (For Coders) #

If you prefer Python, use the pycaw library to interact with Windows audio devices:

• First install the dependencies via pip:

pip install pycaw comtypes keyboard

• Create a script named audio_switcher.py with this code:

from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume
from comtypes import CLSCTX_ALL
import keyboard

def cycle_audio_devices():
    # Get all active playback devices
    all_devices = AudioUtilities.GetAllDevices()
    playback_devices = [
        dev for dev in all_devices
        if dev.State == 1 and dev.Type == 0  # Filter for active, playback-only devices
    ]
    
    if len(playback_devices) < 2:
        return  # No other devices to switch to
    
    # Find current default device
    current_default = AudioUtilities.GetDefaultAudioEndpoint(0, 0)
    current_index = next(
        i for i, dev in enumerate(playback_devices)
        if dev.ID == current_default.ID
    )
    
    # Switch to next device in list
    next_index = (current_index + 1) % len(playback_devices)
    next_device = playback_devices[next_index]
    AudioUtilities.SetDefaultAudioEndpoint(next_device.ID, 0, 0)

# Bind the shortcut (Ctrl+Alt+S here—adjust as needed)
keyboard.add_hotkey('ctrl+alt+s', cycle_audio_devices)
print("Audio switcher running. Press Ctrl+Alt+S to switch devices.")
keyboard.wait()

• Run the script, and your custom shortcut will work immediately. You can also package it into an EXE using pyinstaller if you want a standalone app.

内容的提问来源于stack exchange，提问作者Brian Fouts