Audio Editing Audio File Formats and Codecs 3

Question 1

What is the key distinction between a 'codec' and a 'container format' in digital audio?

Accepted Answer

A codec encodes and decodes audio data while a container format defines how data is organized within the file

Answer

A codec stores metadata while a container format compresses audio data

Answer

A container format determines the sample rate while a codec determines the bit depth

Answer

A codec is always lossless while a container format can be either lossy or lossless

Question 2

Which audio format is most commonly used as the native uncompressed standard on Windows-based professional audio workstations?

Accepted Answer

WAV

Answer

AIFF

Answer

FLAC

Answer

M4A

Question 3

What is DSD (Direct Stream Digital) primarily associated with in audio?

Accepted Answer

High-resolution audiophile formats such as Super Audio CD (SACD)

Answer

Podcast distribution and speech compression

Answer

Standard CD audio playback on consumer devices

Answer

Real-time audio streaming over the internet

Question 4

What type of audio compression does Dolby Digital (AC-3) use for multichannel surround sound?

Accepted Answer

Lossy compression

Answer

Lossless compression

Answer

Uncompressed PCM

Answer

Adaptive Delta Pulse Code Modulation (ADPCM)

Question 5

Which sample rate is considered the professional standard for video production and post-production audio?

Accepted Answer

48,000 Hz

Answer

44,100 Hz

Answer

96,000 Hz

Answer

192,000 Hz

Question 6

Using the Nyquist theorem, what is the highest frequency that can be accurately represented in a 96,000 Hz sample rate audio file?

Accepted Answer

48,000 Hz

Answer

96,000 Hz

Answer

24,000 Hz

Answer

12,000 Hz

Question 7

Which audio codec is predominantly used for high-quality audio delivery on major streaming platforms such as YouTube and Apple Music?

Accepted Answer

AAC

Answer

MP3

Answer

FLAC

Answer

WAV