Logic Pro Certification CRAS Practice Test 2025 – Comprehensive Exam Prep

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Question: 1 / 400

Which of the following file formats is NOT a PCM file format?

Wave

AIFF

MP3

The correct option indicates that MP3 is not a PCM file format. PCM, or Pulse Code Modulation, is a method used to digitally represent analog signals. It is an uncompressed format that captures audio as discrete samples of the waveform, which results in high-quality audio.

Wave and AIFF are both commonly used PCM formats. Wave files may use various codecs but are often associated with uncompressed PCM data, while AIFF files are designed to accommodate PCM audio data and support high-fidelity recordings. CAF (Core Audio Format) is another audio format that can also contain PCM audio.

In contrast, MP3 is a compressed audio format utilizing lossy compression, meaning it reduces the file size by eliminating some audio data, which can result in a loss of sound quality. Thus, while the other options primarily relate to PCM, MP3 stands apart due to its lossy nature, making it not a PCM format.

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CAF

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