Sampling

Question 1

What does “triggering a sample” mean?

Answer 1

– Starting playback of a sample using a key, button, or MIDI command.

Question 2

How was sampling achieved before the 1980s?

Answer 2

– Using reel-to-reel tape loops or tape replay keyboards like the Mellotron and Chamberlin.
– Involved splicing small pieces of tape together.

Question 3

What were the limitations of tape-based sampling?

Answer 3

– Wow and flutter (speed inconsistencies).
– Degradation and oxide wear over time.
– Hiss and poor high-frequency response.

Question 4

What happens if sample rate is too low?

Answer 4

– High frequencies may alias, causing muffled or distorted sound.

Question 4

How did early digital samplers in the late 70s/80s improve on tape sampling?

Answer 4

– Used digital memory instead of tape.
– Limited memory meant samples were short or had lower sample rate/bit depth.
– Reduced some tape issues but introduced digital artifacts if sample rate/bit depth were too low.

Question 5

What happens if bit depth is too low (e.g., 12-bit)?

Answer 5

– Sample sounds grainy, hissy, or distorted due to quantisation noise.

Question 6

Why did drum machines benefit from early sampling?

Answer 6

– Drum samples are short, mostly mono, and don’t need wide pitch shifting.
– Less affected by low bit depth/sample rate.

Question 7

What were hybrid sampler/synths in the late 1980s?

Answer 7

– Used a sample for the attack portion of a sound, with the rest synthesised.
– Allowed realistic articulation without using lots of memory.

Question 8

How did DAWs in the 2000s change sampling?

Answer 8

– Increased memory/storage made realistic multi-sampled instruments practical.
– Enabled software samplers and virtual instruments.

Question 9

What is “one-shot” sample mode?

Answer 9

– Plays the full sample regardless of how long the trigger key is held.
– Can be turned off to use an envelope for dynamic volume control like a synth.

Question 10

How do you avoid clicks when looping samples?

Answer 10

– Choose loop points at zero crossings.
– Use fades at start/end of sample.

Question 11

What is trimming (or truncating) a sample?

Answer 11

– Removing unwanted sound from the start and end of a sample.

Question 12

What is time-stretching?

Answer 12

– Slows down or speeds up a sample without altering pitch digitally.
– On tape, slowing also lowers pitch.

Question 13

What is pitch-shifting?

Answer 13

– Moves the sample up or down in pitch.
– On tape, higher pitch = faster playback.

Question 14

What is beat-slicing?

Answer 14

– Dividing a drum loop into individual hits for re-sequencing or remixing.

Question 15

What is reversing a sample?

Answer 15

– Playing the sample backwards.
– Historically done by reversing tape; now done digitally.

Question 16

What is normalising?

Answer 16

– Raises the loudest point of a sample to maximum level, scaling the rest proportionally.

Question 17

What are stutter and gapping effects?

Answer 17

– Stutter: repeats small sample sections rhythmically.
– Gapping: inserts silence to create rhythmic patterns.

Question 18

What is transposing?

Answer 18

– Changing a sample’s starting pitch/key to match other musical material.

Question 19

What is keyboard mapping?

Answer 19

– Spreading a sample across the keyboard.
– Each group of notes = key zone, full set = key map.

Question 20

What is multisampling?

Answer 20

– Taking samples at several notes across an instrument to avoid extreme pitch-shifting.

Question 21

What is velocity layering?

Answer 21

– Switching between different samples depending on how hard a note is played.

Question 22

What is keyboard tracking in a sampler?

Answer 22

– Filter cutoff increases with pitch so higher notes remain bright and not dull.

Question 23

What creative impact did sampling have on music?

Answer 23

– Allowed musicians to reuse existing recordings.
– Gave rise to new styles: hip-hop, trip hop, mashups, and remixes.
– Led to sampler instruments (carryable sets of sounds).

Question 24

What legal issues arise from sampling?

Answer 24

– Copyright infringement if samples are used without clearance. – Some musicians have been sued for uncleared samples.

Question 25

What is the significance of the Mellotron?

Answer 25

– Tape-based keyboard that reproduced orchestral sounds (strings, brass). – Used by bands like The Beatles, King Crimson, Moody Blues. – Early precursor to modern samplers.

Question 26

How did hardware samplers in the 90s shape music?

Answer 26

– Often 12-bit, noisy, and distorted, creating part of the genre’s sound (e.g., Amen break in drum & bass). – MIDI allowed triggering via sequencers.

Question 27

How did affordability and memory improvements affect sampling?

Answer 27

– Made realistic acoustic instrument sampling possible. – Professional sample libraries and packs became widespread. – Software samplers (from Cubase VST onward) made sampling accessible on DAWs.

Question 28

What is the difference between software and hardware samplers today?

Answer 28

– Hardware: standalone, sometimes boutique instruments. – Software: integrated into DAWs, easier to manipulate, often bundled with libraries.

Question 29

Give examples of sample library usage.

Answer 29

– Bundled libraries (GarageBand, Logic, Ableton). – Professional packs sold for specific instruments or sounds (Splice, Kontakt).

Question 30

Key technical limitations of early samplers?

Answer 30

– Short mono samples, low bit depth (12-16 bit), low sample rates. – Noisy, limited dynamic range, and small memory.

Question 31

Why were drum samples ideal for early digital samplers?

Answer 31

– Short in duration, mostly mono, less affected by low bit depth/sample rate. – Could be used directly in sequencers without complex pitch-shifting.