What type of audio device is designed to record voice and sound?

Microphones are specifically designed to capture audio, whether it is voice or other sounds. They work by converting sound waves into electrical signals, allowing the sound to be recorded, transmitted, or amplified. Microphones are essential in various applications, including music production, broadcasting, and voice communication in devices such as phones and computers.

Speakers, on the other hand, are output devices that convert electrical signals back into sound, making them unsuitable for recording audio. Webcams primarily serve to capture video, although many modern models include built-in microphones for audio capture. Digital cameras mainly focus on taking still images or videos; while they can sometimes record audio, their primary function is not dedicated to sound recording. Thus, microphones stand out as the correct choice for recording voice and sound.