Video Editing Audio Editing and Mixing 3

Question 1

What does '5.1 surround sound' refer to?

Accepted Answer

Five full-range channels plus one subwoofer channel

Answer

5.1 surround sound consists of five full-range channels (front left, center, front right, rear left, rear right) plus one low-frequency effects (subwoofer) channel.

Question 2

What is 'audio ducking' in video production?

Accepted Answer

Automatically lowering background music when dialogue is present

Answer

Audio ducking automatically reduces the volume of background music or ambient audio when dialogue or narration is detected.

Question 3

What is a 'noise floor' in audio recording?

Accepted Answer

The ambient level of background hiss and noise in a recording system

Answer

The noise floor is the level of inherent system noise (hiss, hum) in a recording, below which the desired signal cannot be heard.

Question 4

What does 'sample rate' determine in digital audio?

Accepted Answer

How many times per second the audio waveform is measured and captured

Answer

Sample rate is the number of times per second the analog audio waveform is digitally sampled, measured in Hz (e.g., 44,100 Hz or 48,000 Hz).

Question 5

What is the standard sample rate used for professional video audio?

Accepted Answer

48,000 Hz

Answer

48,000 Hz (48 kHz) is the professional standard sample rate for video audio, while 44,100 Hz is used for music CDs.

Video Editing Practice Test

Video Editing Practice Test

Video Editing Audio Editing and Mixing 3