生成代码：按键1按下时，语音控制模式；按键2按下为远程控制模式；按键3按下，退出当前模式

Sure, here's a sample code snippet in Python that implements the functionality you requested:

def voice_control_mode():
    print("Entering voice control mode...")
    # Add your voice control logic here

def remote_control_mode():
    print("Entering remote control mode...")
    # Add your remote control logic here

def exit_mode():
    print("Exiting current mode...")

def main():
    while True:
        key = input("Press a key (1 for voice control, 2 for remote control, 3 to exit): ")
        if key == "1":
            voice_control_mode()
        elif key == "2":
            remote_control_mode()
        elif key == "3":
            exit_mode()
            break
        else:
            print("Invalid key, please try again.")

if __name__ == "__main__":
    main()

This code provides a menu-based interface where the user can press keys 1, 2, or 3 to select different modes. Pressing 1 triggers the voice control mode, pressing 2 triggers the remote control mode, and pressing 3 exits the program. Feel free to modify and expand the code to suit your specific requirements.