Audio Editing Digital Audio Editing 2 — Questions and Answers
Question 1: What does the term 'sample rate' refer to in digital audio?
- The number of audio samples recorded per second (Correct answer)
- The bit depth of each audio sample
- The file size of the audio recording
- The number of audio channels in a recording
Correct answer: The number of audio samples recorded per second
Sample rate measures how many audio samples are captured per second, with 44,100 Hz (44.1 kHz) being the standard for CD-quality audio.
Question 2: In a DAW, what is a 'region' or 'clip'?
- A section of audio that has been isolated and can be moved or edited independently (Correct answer)
- A hardware input/output channel
- A type of audio plugin effect
- A MIDI instrument preset
Correct answer: A section of audio that has been isolated and can be moved or edited independently
A region or clip is a discrete segment of audio on a track that can be independently moved, trimmed, copied, or processed.
Question 3: What is 'latency' in the context of digital audio recording?
- The delay between an input signal and its output through the audio system (Correct answer)
- The volume drop at the end of a fade
- The noise floor of an audio interface
- The frequency response of a microphone
Correct answer: The delay between an input signal and its output through the audio system
Latency is the time delay introduced by converting, processing, and outputting audio through digital hardware and software.
Question 4: Which process removes unwanted frequencies from an audio signal using a filter?
- Equalization (EQ) (Correct answer)
- Compression
- Reverb
- Limiting
Correct answer: Equalization (EQ)
Equalization allows you to boost or cut specific frequency ranges, shaping the tonal character of an audio signal.
Question 5: What does a 'high-pass filter' do to an audio signal?
- Allows high frequencies to pass through while attenuating low frequencies (Correct answer)
- Allows low frequencies to pass through while attenuating high frequencies
- Boosts all frequencies above a set threshold
- Removes the highest frequencies to reduce harshness
Correct answer: Allows high frequencies to pass through while attenuating low frequencies
A high-pass filter (HPF) cuts frequencies below its cutoff point, letting high frequencies pass—useful for removing rumble or low-end noise.
Question 6: What is 'dithering' used for in digital audio?
- Reducing quantization noise when converting to a lower bit depth (Correct answer)
- Increasing the sample rate of a file
- Adding harmonic distortion for warmth
- Synchronizing multiple audio tracks
Correct answer: Reducing quantization noise when converting to a lower bit depth
Dithering adds a tiny amount of random noise to mask the harsher quantization distortion that occurs when reducing bit depth, such as from 24-bit to 16-bit.
Question 7: In audio editing, what does 'punch-in recording' allow you to do?
- Record over a specific section of an existing track without affecting the rest (Correct answer)
- Record multiple tracks simultaneously
- Export only a selected region of the session
- Automatically tune a vocal performance
Correct answer: Record over a specific section of an existing track without affecting the rest
Punch-in recording lets you drop into record mode at a set point to replace a specific mistake while leaving the surrounding audio intact.
Audio Editing Digital Audio Editing 2
What does the term 'sample rate' refer to in digital audio?