Sound formats refer to the different ways audio data is encoded and stored. Common formats include MP3, WAV, and AAC. Each format has its own characteristics, such as file size, sound quality, and compatibility with various devices. For example, MP3 is popular for its small file size, making it ideal for streaming and portable devices. Different sound formats serve various purposes in music, film, and broadcasting. WAV files are often used in professional settings due to their high quality, while AAC is favored for its efficiency in compressing audio without significant loss of quality. Understanding these formats helps users choose the right one for their needs.