Audio Editing Audio File Formats and Codecs

Question 1

What does the acronym 'WAV' stand for in audio file formats?

Accepted Answer

Waveform Audio File Format

Answer

WAV stands for Waveform Audio File Format, a Microsoft/IBM standard for storing uncompressed PCM audio data.

Question 2

Which of the following audio formats uses lossy compression?

Accepted Answer

MP3

Answer

MP3 uses lossy compression, permanently discarding audio data deemed less perceptible to reduce file size.

Question 3

What is the standard sample rate for CD-quality audio?

Accepted Answer

44,100 Hz

Answer

CD-quality audio uses a 44,100 Hz (44.1 kHz) sample rate, established as the Red Book audio standard for compact discs.

Question 4

What is the standard bit depth for CD-quality audio?

Accepted Answer

16-bit

Answer

CD audio uses 16-bit depth, providing 65,536 possible amplitude values and approximately 96 dB of dynamic range.

Question 5

Which of the following is a lossless audio codec?

Accepted Answer

FLAC

Answer

FLAC (Free Lossless Audio Codec) compresses audio without discarding any data, allowing perfect reconstruction of the original signal.

Audio Editing Practice Test