Audio Editing Audio File Formats and Codecs 2

Question 1

What does 'AAC' stand for in audio encoding?

Accepted Answer

Advanced Audio Coding

Answer

Adaptive Audio Compression

Answer

Analog Audio Channel

Answer

Automatic Audio Codec

Question 2

According to the Nyquist theorem, what must the sample rate be to accurately capture a given audio frequency?

Accepted Answer

At least twice the highest frequency being recorded

Answer

Equal to the highest frequency being recorded

Answer

Four times the highest frequency being recorded

Answer

At least ten times the highest frequency being recorded

Question 3

Which audio format compresses audio files to be smaller than WAV while maintaining bit-for-bit identical audio quality?

Accepted Answer

FLAC

Answer

MP3

Answer

AAC

Answer

OGG Vorbis

Question 4

What is the highest standard bit rate available for MP3 encoding?

Accepted Answer

320 kbps

Answer

128 kbps

Answer

192 kbps

Answer

256 kbps

Question 5

What is the primary role of the OGG file format in audio?

Accepted Answer

To serve as an open multimedia container that typically wraps Vorbis audio compression

Answer

To store uncompressed audio for professional studio use

Answer

To provide DRM (Digital Rights Management) protection for digital audio

Answer

To store MIDI sequence data and software instrument patches

Question 6

Which of the following audio formats supports Variable Bit Rate (VBR) encoding?

Accepted Answer

MP3

Answer

WAV

Answer

AIFF

Answer

PCM

Question 7

What file extension do Apple Lossless Audio Codec (ALAC) files most commonly use?

Accepted Answer

.m4a

Answer

.alac

Answer

.aiff

Answer

.wav