SEC2 Digital Audio and Sound

What is the difference between analog and digital audio?

• Analog audio is digital, while digital audio is analog.

• Analog audio is higher quality than digital audio.

• Analog audio is continuous, while digital audio is discrete.

• Analog audio is louder than digital audio.

What is bit depth in digital audio?

• The number of bytes used to represent each sample of audio data.

• The frequency at which audio samples are taken.

• The duration of each audio sample.

• The number of bits used to represent each sample of audio data.

Which audio file format is commonly used for CDs?

• MP3

• WAV

• FLAC

• CDDA

What is audio compression and why is it used?

• Audio compression is the process of removing all audio data from a file to reduce its size.

• Audio compression is the process of reducing the size of audio files without significantly affecting the quality of the sound. It is used to save storage space, reduce bandwidth usage, and improve transmission efficiency.

• Audio compression is the process of converting audio files into a different format.

• Audio compression is the process of increasing the size of audio files to improve sound quality.

What is the advantage of digital audio over analog audio?

• Faster data transfer, more durable, and less susceptible to interference.

• Better sound quality, easier editing and manipulation, and lossless storage and transmission.

• Simpler technology, less power consumption, and smaller file sizes.

• Lower cost, wider compatibility, and longer lifespan.

What is the relationship between bit depth and audio quality?

• Higher bit depth results in lower audio quality.

• Higher bit depth allows for higher audio quality.

• Bit depth has no impact on audio quality.

• Lower bit depth allows for higher audio quality.

Which audio file format is commonly used for streaming music online?

• WAV

• FLAC

• AAC

• MP3

What are the different methods of audio compression?

• bitrate compression

• frequency compression

• lossy compression, lossless compression

• time compression

How does digital audio represent sound waves?

• By converting sound waves into visual representations

• By converting analog sound waves into binary numbers

• By using mathematical equations to represent sound waves

• By converting sound waves into analog signals

What is the purpose of audio compression?

• To increase the size of audio files without affecting the quality.

• To convert audio files into a different format.

• To remove all audio data from a file to reduce its size.

• To reduce the size of audio files without significantly affecting the quality of the sound.