Music mixing & mastering
Mix and master songs to reference loudness and balance.
20 project-authored proposals · taxonomy v1.1 · 0 new benchmark runs. Verifiers and partial-credit rules below are designs, not executed results.
- Typical applications
- Logic Pro · Ableton Live · Pro Tools
- Class GUI-need label
G2· GUI-essential
Task proposals · 20
Expand to inspect the complete original wording and proposed checks. Original proposal text remains English in both interfaces.
R06.07.02.02-T01 Set EQ and compression on a guitar bus to spec
Original instruction
In fixtures/rock_song.logicx insert Channel EQ and Compressor on bus 'GTR BUS': EQ bell -4 dB at 250 Hz Q 2.0 and high-pass at 80 Hz (24 dB/oct); Compressor ratio 4:1, threshold -18 dB, attack 10 ms, release 120 ms, auto gain off. Bounce output/gtr_bus.wav.
- Platforms
mac· macOS- Applications
- Logic Pro · Pro Tools · Ableton Live
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G3· GUI-only- Interaction primitives
click· Point & clicktype· Text & formsdrag· Drag & drop- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 2 / 5
Proposed verifier
Plugin parameters read from the saved project (Logic plist / AU state) within tolerance (freq 1%, gain 0.2 dB, Q 0.1, times 5%); bounce vs reference processed with the same chain: null residual <= -40 dB. Plugin order EQ then compressor. Logic's AppleScript/UI scripting, Pro Tools' PTSL port and Live's Max for Live are disabled; the VM has no terminal, ffmpeg or sox.
Proposed partial credit
40% EQ parameters; 40% compressor parameters; 20% bounce matches reference.
R06.07.02.02-T02 Master a single to streaming loudness
Original instruction
Master fixtures/indie_single_mix.wav in Ableton Live or Logic: integrated -14 LUFS +/- 0.5, true peak <= -1 dBTP, PLR >= 8 dB, no added clipping, and export output/single_master.wav (44.1 kHz/24-bit) plus a 16-bit dithered version output/single_master_16.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Ableton Live · Logic Pro · iZotope Ozone
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
click· Point & clickdrag· Drag & dropvis· Visual judgment- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 2 / 5
Proposed verifier
Both files: -14 +/- 0.5 LUFS, true peak <= -1.0 dBTP, PLR >= 8 dB; 16-bit file has dither noise (LSB activity in silent tail) and is otherwise equal to 24-bit within dither; tonal balance within 1.5 dB/octave of mix (no heavy EQ). Control pair is T15. Live's Max for Live/Remote Scripts and Logic's AppleScript/UI scripting are disabled; the VM has no terminal, ffmpeg, sox or Python.
Proposed partial credit
35% loudness; 25% true peak; 20% dynamics; 20% formats/dither.
R06.07.02.02-T03 Match a mix to a reference spectrum
Original instruction
Match the tonal balance of fixtures/edm_mix.wav to fixtures/reference_master.wav (synthetic reference) using EQ (Match EQ allowed as a start, then manual correction) so the long-term average spectrum is within 2 dB per octave band from 63 Hz to 8 kHz at equal loudness. Export output/edm_matched.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Logic Pro · Ableton Live · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
vis· Visual judgmentdrag· Drag & dropav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 4 / 5
Proposed verifier
LTAS (loudness-normalized) per octave band 63 Hz-8 kHz: |mix - reference| <= 2 dB in all 8 bands; no band boosted > 9 dB vs input; transient crest factor not reduced by > 2 dB; true peak <= -1 dBTP. Logic's AppleScript/UI scripting, Live's Max for Live and Pro Tools' PTSL port are disabled; the VM has no terminal, ffmpeg, sox or Python.
Proposed partial credit
60% band matches (7.5 pts per band); 20% no extreme EQ; 20% dynamics and peaks.
R06.07.02.02-T04 Set a static balance to target stem ratios
Original instruction
In fixtures/pop_mixdown.ptx (vocal, drums, bass, keys, guitars stems) set fader levels and pans only (no plugins) so that, over the chorus, the vocal stem's loudness sits +3 LU above the instrument sum, drums 2 LU above bass, and keys and guitars are panned 40% opposite each other. Bounce output/static_balance.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Pro Tools · Logic Pro · Ableton Live
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
drag· Drag & dropav· Audio/video over timevis· Visual judgment- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 3 / 5
Proposed verifier
Stem gains/pans estimated by regression of the bounce on the stems: vocal vs instruments +3 +/- 0.7 LU in GT chorus; drums vs bass +2 +/- 0.7 LU; keys/guitars pans +/-40% (+/- 5); session has no inserts on tracks; no clipping. Pro Tools' PTSL port, Logic's AppleScript/UI scripting and Live's Max for Live are disabled; the VM has no terminal, ffmpeg or sox.
Proposed partial credit
40% vocal ratio; 25% drums/bass ratio; 25% pans; 10% fader-only method.
R06.07.02.02-T05 Build a lead vocal chain with de-essing and reverb send
Original instruction
On the lead vocal in fixtures/ballad.als build: high-pass 90 Hz, de-esser reducing 5-9 kHz sibilant peaks by 4-6 dB, compression with 3-6 dB gain reduction on phrases, presence EQ, and a send to a plate reverb return (pre-delay 30 ms, decay 1.8 s). Export output/vocal_processed.wav (vocal + reverb only).
- Platforms
mac· macOSwin· Windows- Applications
- Ableton Live · Logic Pro · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
click· Point & clickdrag· Drag & dropav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 3 / 5
Proposed verifier
Compared to dry vocal: energy below 90 Hz -12 dB; GT sibilant events reduced 4-6 dB in 5-9 kHz with non-sibilant 5-9 kHz within 1 dB; phrase crest factor reduced consistent with 3-6 dB GR; reverb tail decay 1.8 +/- 0.3 s with 30 +/- 5 ms pre-delay. Device chain read from .als. Max for Live/Remote Scripts, Logic's UI scripting and Pro Tools' PTSL port are disabled; .als writes outside Live are logged.
Proposed partial credit
15% high-pass; 30% de-essing; 25% compression; 30% reverb send settings.
R06.07.02.02-T06 Sidechain the bass to the kick
Original instruction
In fixtures/house_track.flp duck the bass by 4-6 dB on every kick hit using sidechain compression (Fruity Limiter or similar) with release about 80 ms so the bass recovers before the offbeat. Kick and other channels unchanged. Export output/house_sidechain.wav.
- Platforms
mac· macOSwin· Windows- Applications
- FL Studio · Ableton Live · Logic Pro
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
click· Point & clickdrag· Drag & dropav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 3 / 5
Proposed verifier
Bass stem gain envelope (regression on the known bass source): dips of 4-6 dB within 10 ms after each kick onset; recovery to within 1 dB by 70-110 ms; no ducking at non-kick times; kick level unchanged; sidechain routing present in .flp. FL Studio's Python MIDI/piano-roll scripts, Live's Max for Live and Logic's UI scripting are disabled; the VM has no terminal or Python, and .flp writes outside FL are logged.
Proposed partial credit
45% duck depth; 30% release timing; 15% kick-locked only; 10% routing present.
R06.07.02.02-T07 Pan a drum kit and check mono compatibility
Original instruction
Pan the 9 drum tracks in fixtures/jazz_drums.RPP per audience perspective in notes/drum_map.png (hi-hat right, floor tom left, overheads 80% L/R), then fix the overhead phase issue so the mix's correlation stays >= 0.3 and mono fold-down loses <= 1.5 dB of snare energy. Render output/drums_mix.wav.
- Platforms
mac· macOSwin· Windows- Applications
- REAPER · Pro Tools · Logic Pro
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
drag· Drag & dropav· Audio/video over timevis· Visual judgment- Work product
WP05· Time-based media- Conditions
- None declared
- Proposed difficulty
- 3 / 5
Proposed verifier
Per-source pan from stem regression within 10% of map; overhead pans 80 +/- 5%; long-term inter-channel correlation >= 0.3; mono fold-down snare energy loss <= 1.5 dB (vs >= 5 dB in input); overhead time/polarity fix detected (lag <= 0.2 ms). ReaScript, Pro Tools' PTSL port and Logic's AppleScript/UI scripting are disabled; .RPP edits and WAVs written outside the DAW are logged.
Proposed partial credit
40% pan positions; 30% phase fix; 30% mono compatibility.
R06.07.02.02-T08 Sequence and level-match an EP master
Original instruction
Master the 5 mixes in fixtures/ep_mixes/ as an EP in Logic Pro or WaveLab: songs level-matched within 1 LU (perceived, quiet ballad allowed -2 LU per notes), 2 s gaps except a crossfade between tracks 3 and 4, fade-out on track 5, ISRC codes from notes/isrc.csv. Export a DDP image to output/ep_ddp/ and WAVs.
- Platforms
mac· macOSwin· Windows- Applications
- Logic Pro · WaveLab · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
drag· Drag & dropclick· Point & clickav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro applong· Long-horizon- Proposed difficulty
- 3 / 5
Proposed verifier
DDP parsed: 5 tracks, ISRCs match CSV, track starts produce 2 s gaps and a 3-4 crossfade (overlap 2-6 s); integrated loudness per track within 1 LU of the EP median (ballad -2 +/- 0.5); true peak <= -1 dBTP; fade-out on track 5 >= 4 s. Logic's AppleScript/UI scripting, WaveLab's Script Window and Pro Tools' PTSL port are disabled; the VM has no terminal, ffmpeg, sox or DDP tools.
Proposed partial credit
25% DDP structure and ISRC; 35% level matching; 25% gaps/crossfade/fade; 15% peaks.
R06.07.02.02-T09 Apply client mix notes to an approved mix
Original instruction
The client sent notes/mix_notes_v3.txt on fixtures/song_v2.ptx: vocal +1 dB in choruses only, less reverb on snare (-4 dB return send), bass a touch brighter (shelf +2 dB above 1.5 kHz), and the outro fade starting 4 bars later. Apply only these changes and bounce output/song_v3.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Pro Tools · Logic Pro · Ableton Live
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
click· Point & clickdrag· Drag & dropav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro appinterrupt· Interruptions- Proposed difficulty
- 3 / 5
Proposed verifier
Stem regression v3 vs v2: vocal +1 +/- 0.3 dB in GT choruses and 0 +/- 0.2 elsewhere; snare reverb send -4 +/- 1 dB; bass >1.5 kHz shelf +2 +/- 0.5 dB; fade start moved by 4 bars (+/- 20 ms); all else null within -45 dB. Pro Tools' PTSL port, Logic's AppleScript/UI scripting and Live's Max for Live are disabled; the VM has no terminal, ffmpeg or sox.
Proposed partial credit
25% vocal change; 20% snare reverb; 35% bass EQ (20 pts) and fade (15 pts); 20% nothing else changed.
R06.07.02.02-T10 Master from stems for club and streaming versions
Original instruction
Using the 4 stems in fixtures/techno_stems/ (drums, bass, music, fx), build a stem master in Ableton Live with bus processing per stem and a master chain, then export a club master (-8 to -9 LUFS, true peak <= -0.3 dBTP) and a streaming master (-14 LUFS, true peak <= -1 dBTP) with identical tonal balance.
- Platforms
mac· macOSwin· Windows- Applications
- Ableton Live · Logic Pro · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
click· Point & clickdrag· Drag & dropvis· Visual judgment- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 4 / 5
Proposed verifier
Club: -9 to -8 LUFS integrated, TP <= -0.3 dBTP; streaming: -14 +/- 0.5 LUFS, TP <= -1 dBTP; loudness-normalized LTAS difference between versions <= 1 dB per octave; kick transient crest in club version >= 6 dB; no audible clipping (sample runs at full scale = 0). Live's Max for Live/Remote Scripts, Logic's UI scripting and Pro Tools' PTSL port are disabled; the VM has no terminal, ffmpeg, sox or Python.
Proposed partial credit
30% club spec; 30% streaming spec; 25% consistent tone; 15% transients preserved.
R06.07.02.02-T11 Clear low-mid mud while keeping vocal presence
Original instruction
The mix fixtures/folk_mix.wav has a 200-400 Hz build-up. In Pro Tools or Logic, reduce it on the instrument buses (not the vocal) so mix energy in 200-400 Hz drops >= 3 dB relative to 1-4 kHz, vocal presence band (2-5 kHz) unchanged, and overall loudness within 0.5 LU. Bounce output/folk_cleaned.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Pro Tools · Logic Pro
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
vis· Visual judgmentclick· Point & clickav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 3 / 5
Proposed verifier
Using provided stems as regression basis: 200-400 Hz to 1-4 kHz ratio reduced >= 3 dB; vocal stem gain/EQ unchanged (vocal 2-5 kHz within 0.5 dB); integrated loudness within 0.5 LU; EQ inserts on instrument buses present in session. Pro Tools' PTSL port and Logic's AppleScript/UI scripting are disabled; the VM has no terminal, ffmpeg or sox.
Proposed partial credit
50% mud reduction; 30% vocal unaffected; 20% loudness and method.
R06.07.02.02-T12 Ride vocal automation for a stable vocal-to-band ratio
Original instruction
In fixtures/rock_anthem.logicx write volume automation on the lead vocal (no extra compression) so the vocal-to-instrument loudness ratio stays within +/- 1.5 LU of +2 LU across all 42 phrases, including the quiet bridge and loud final chorus. Bounce output/rock_anthem_rides.wav.
- Platforms
mac· macOS- Applications
- Logic Pro · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
path· Continuous pathav· Audio/video over timedrag· Drag & drop- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 4 / 5
Proposed verifier
Per GT phrase (stem regression): vocal minus instruments short-term loudness 0.5-3.5 LU for >= 90% of phrases; vocal track automation present with >= 30 breakpoints; no new dynamics plugins; no step changes > 4 dB within 30 ms. AppleScript/System Events UI scripting and Pro Tools' PTSL port are blocked; the VM has no terminal, ffmpeg or sox, and outside WAV writes are logged.
Proposed partial credit
60% ratio consistency; 25% automation-only; 15% smooth rides.
R06.07.02.02-T13 Add parallel compression to the drum bus
Original instruction
Set up New York-style parallel compression on the drums in fixtures/funk_mix.als: a return with heavy compression (ratio >= 8:1, 10-15 dB gain reduction, fast attack) blended so drum sustain (energy 50-200 ms after hits) rises 3-5 dB while transient peaks rise <= 1 dB. Export output/funk_parallel.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Ableton Live · Logic Pro · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
click· Point & clickdrag· Drag & dropav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 3 / 5
Proposed verifier
Drum stem envelope analysis vs input: post-hit 50-200 ms energy +3 to +5 dB; peak within 1 dB; return track compressor parameters per spec (from .als); dry drum path unchanged (no insert compression on the original drums). Max for Live/Remote Scripts, Logic's AppleScript/UI scripting and Pro Tools' PTSL port are disabled; .als writes from outside Live are logged.
Proposed partial credit
45% sustain increase; 25% transients kept; 20% compressor settings; 10% parallel routing.
R06.07.02.02-T14 Apply mid/side mastering for mono bass and wider highs
Original instruction
Master fixtures/synthpop_mix.wav with mid/side processing: side channel below 120 Hz removed (mono bass), side high-shelf +2 dB above 8 kHz, mid unchanged except a 1 dB dip at 3 kHz, final -14 LUFS and true peak <= -1 dBTP. Export output/synthpop_ms.wav.
- Platforms
mac· macOSwin· Windows- Applications
- Logic Pro · Pro Tools · iZotope Ozone
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
click· Point & clickvis· Visual judgmentdrag· Drag & drop- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 4 / 5
Proposed verifier
M/S decomposition of output vs input: side energy < 120 Hz reduced >= 30 dB; side > 8 kHz +2 +/- 0.5 dB; mid at 3 kHz -1 +/- 0.3 dB and elsewhere within 0.5 dB; loudness and true peak per spec; correlation below 120 Hz >= 0.99. Logic's AppleScript/UI scripting and Pro Tools' PTSL port are disabled; the VM has no terminal, ffmpeg, sox or Python, and outside WAV writes are logged.
Proposed partial credit
35% mono bass; 20% side shelf; 20% mid EQ; 25% loudness/peak.
R06.07.02.02-T15 Master the single from the terminal (control pair of T02)
Original instruction
Control pair of T02: in a terminal only, master fixtures/indie_single_mix.wav to -14 LUFS / -1 dBTP with PLR >= 8 dB using ffmpeg (loudnorm, alimiter) or sox, and write output/single_master_cli.wav (24-bit) and a dithered 16-bit output/single_master_cli_16.wav.
- Platforms
mac· macOSwin· Windowslin· Linux- Applications
- ffmpeg · sox
- Interfaces
term· Terminal- GUI need · task setting
CL· CLI-sufficient- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
code· Code & commands- Work product
WP05· Time-based media- Conditions
- None declared
- Proposed difficulty
- 2 / 5
Proposed verifier
Same checks as T02: loudness, true peak, PLR, tonal balance, dither. Scored side by side with T02 to measure the GUI-vs-CLI delta.
Proposed partial credit
35% loudness; 25% true peak; 20% dynamics; 20% formats/dither.
R06.07.02.02-T16 Mix a song in Dolby Atmos for music streaming
Original instruction
Create a Dolby Atmos music mix of fixtures/pop_multitrack.logicx (32 tracks): drums and bass in the 7.1.4 bed, lead vocal centered as an object, 4 synth objects placed per notes/atmos_layout.json with 2 moving in the chorus, binaural render modes set per object. Export an ADM BWF master at -18 LKFS and true peak <= -1 dBTP.
- Platforms
mac· macOS- Applications
- Logic Pro
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
drag· Drag & dropgeom· Precise geometryav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro applong· Long-horizon- Proposed difficulty
- 5 / 5
Proposed verifier
ADM XML: 12-channel bed + >= 5 objects; object positions match layout within 0.1 normalized; chorus movement paths present; vocal object at front center; Dolby renderer loudness -18 +/- 1 LKFS and TP <= -1; binaural render metadata per object set; stereo re-render loudness sensible. AppleScript/System Events UI scripting is blocked and the VM has no terminal or ADM/Dolby CLI tools; files not written by Logic are logged.
Proposed partial credit
20% bed/object structure; 35% object placement and motion; 20% loudness; 25% binaural modes (15 pts) and vocal centered (10 pts).
R06.07.02.02-T17 Mix a 24-track session to a reference and delivery spec
Original instruction
Mix fixtures/band_24tr.ptx (synthetic band multitrack) to match ref/mix_reference.wav in balance and tone, with drums punchy, vocal intelligible, bass mono below 100 Hz. Deliver output/band_mix.wav at -14 LUFS, true peak <= -1 dBTP, plus instrumental and a cappella versions that null with the full mix.
- Platforms
mac· macOSwin· Windows- Applications
- Pro Tools · Logic Pro · Ableton Live
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
drag· Drag & dropvis· Visual judgmentav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro applong· Long-horizon- Proposed difficulty
- 5 / 5
Proposed verifier
LTAS within 3 dB/octave of reference; vocal-to-instrument loudness ratio within 1.5 LU of reference's (stem estimate); bass correlation >= 0.99 below 100 Hz; instrumental + a cappella nulls against mix <= -45 dB; loudness/peak per spec. Mix rubric (engineer-calibrated) 20%. Pro Tools' PTSL port, Logic's AppleScript/UI scripting and Live's Max for Live are disabled; the VM has no terminal, ffmpeg or sox.
Proposed partial credit
25% tonal match; 30% balance (20 pts) and mono bass (10 pts); 25% versions null and spec; 20% rubric.
R06.07.02.02-T18 Prepare a vinyl premaster
Original instruction
Prepare fixtures/album_side_a/ (4 tracks) for vinyl cutting per notes/vinyl_spec.txt: low end mono below 150 Hz, sibilance 6-10 kHz reduced on vocal-heavy passages, no limiting beyond 2 dB gain reduction, peaks <= -3 dBFS, side length <= 19 min, 24-bit/96 kHz files with 2 s spacing documented in a cue sheet.
- Platforms
mac· macOSwin· Windows- Applications
- Pro Tools · WaveLab · Logic Pro
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
click· Point & clickvis· Visual judgmentav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 4 / 5
Proposed verifier
Side channel < 150 Hz <= -30 dB re mid; sibilant event peaks 6-10 kHz reduced >= 3 dB on GT events; estimated limiter GR <= 2 dB; sample peaks <= -3 dBFS; total runtime <= 19:00; files 96 kHz/24-bit; cue sheet times match files. Pro Tools' PTSL port, WaveLab's Script Window and Logic's AppleScript/UI scripting are disabled; the VM has no terminal, ffmpeg or sox.
Proposed partial credit
25% mono low end; 20% sibilance; 20% dynamics/peaks; 35% runtime/format (20 pts) and cue sheet (15 pts).
R06.07.02.02-T19 Deliver sync-licensing stem versions that null
Original instruction
From fixtures/sync_song.als produce versions for sync licensing: full mix, instrumental, a cappella, TV mix (no lead vocal, backing vocals kept), 30 s and 60 s cut-downs ending on a button. All full-length versions must null against each other appropriately. Export to output/sync/ with the naming scheme in notes/naming.txt.
- Platforms
mac· macOSwin· Windows- Applications
- Ableton Live · Logic Pro · Pro Tools
- Interfaces
desk· Desktop GUI- GUI need · task setting
HY· Hybrid- GUI need · ordinary access
G2· GUI-essential- Interaction primitives
drag· Drag & dropclick· Point & clickav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro app- Proposed difficulty
- 3 / 5
Proposed verifier
instrumental + a cappella vs full mix null <= -45 dB; TV mix + lead vocal stem nulls with full mix; cut-downs 30.0/60.0 s +/- 0.1 with final button (energy decays to -60 dBFS within 2 s) and bar-aligned edits; names exact.
Proposed partial credit
35% null relationships; 30% cut-downs; 15% TV mix content; 20% naming and formats.
R06.07.02.02-T20 Remaster a degraded mix for reissue
Original instruction
fixtures/demo_1998_sim.wav is a synthetic old mix: dull top, boomy 120 Hz, narrow image, peaks at -6 dBFS, tape hiss. Remaster it: reduce hiss >= 8 dB without dulling cymbals, correct the boom, open the stereo image (correlation 0.5-0.8), and master to -14 LUFS / -1 dBTP. Export output/demo_remaster.wav.
- Platforms
mac· macOSwin· Windows- Applications
- iZotope RX · iZotope Ozone · Logic Pro
- Interfaces
desk· Desktop GUI- GUI need · task setting
G2· GUI-essential- GUI need · ordinary access
CL· CLI-sufficient- Interaction primitives
vis· Visual judgmentclick· Point & clickav· Audio/video over time- Work product
WP05· Time-based media- Conditions
licensed· Licensed pro applong· Long-horizon- Proposed difficulty
- 5 / 5
Proposed verifier
Known-source fixture: hiss floor in silent passages -8 dB; cymbal band 8-12 kHz energy within 2 dB of clean master; 100-150 Hz excess reduced to within 2 dB of clean; correlation 0.5-0.8; loudness/TP per spec; SI-SDR vs clean master improved >= 3 dB. RX's Batch Processor and Logic's AppleScript/UI scripting are disabled; the VM has no terminal, ffmpeg, sox or Python, and outside WAV writes are logged.
Proposed partial credit
25% hiss; 20% tonal fixes; 20% stereo image; 35% loudness/peak (20 pts) and overall fidelity (15 pts).
Mapped research references
No benchmark reference is assigned to this class in the current mapping.