Which file extension corresponds to a commonly used lossy audio format?

Which file extension corresponds to a commonly used lossy audio format?

• A. .wav
• B. .mp3
• C. .aiff
• D. .flac

Answer: (B)

Lossy audio formats reduce file size by discarding some audio information, trading perfect fidelity for smaller files. MP3 is a commonly used lossy format that uses perceptual coding to remove inaudible or less important parts of the sound while keeping the overall listening experience practical across devices and streaming. In contrast, WAV and AIFF are typically uncompressed formats that keep all the original audio data, resulting in large files. FLAC is lossless compression, which reduces size but preserves every bit of information so the playback is identical to the source. Because MP3 is specifically designed for efficient, widely compatible lossy compression, it best fits the description.

Lossy audio formats reduce file size by discarding some audio information, trading perfect fidelity for smaller files. MP3 is a commonly used lossy format that uses perceptual coding to remove inaudible or less important parts of the sound while keeping the overall listening experience practical across devices and streaming. In contrast, WAV and AIFF are typically uncompressed formats that keep all the original audio data, resulting in large files. FLAC is lossless compression, which reduces size but preserves every bit of information so the playback is identical to the source. Because MP3 is specifically designed for efficient, widely compatible lossy compression, it best fits the description.