Audio Processing
Freq Quiz
EQ
A frequency is boosted or cut. Listen and pick the right frequency from 9 choices — multiple choice frequency recognition.
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EQ Match
EQ
A hidden EQ curve is applied to audio. Drag your bands to match it by ear — frequency, gain, and Q across 6 filter types.
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Quick EQ
EQ
Two EQ curves are shown — one is applied to the audio. Identify which curve matches the target by ear.
Play
Compressor
Dynamics
A target compressor is applied to audio. Dial in threshold, ratio, attack, release, and knee to match it by ear.
Play
Level Logic
Dynamics
A reference signal plays, then a level-adjusted version. Identify whether the gain was boosted or cut, and by how much.
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Quick Compress
Dynamics
Two signals play side by side — one compressed, one dry. Identify the compressed audio.
Play
Distortion Master
Dynamics
A hidden distortion is applied to audio. Match the drive, type (soft clip, hard clip, tape), mix, and tone by ear.
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Spatial Specialist
Space
Two modes in one: identify a sound's stereo pan position, or guess the stereo width between two panned sources.
Play
Freq Hunter
Space
A bandpass-filtered sound plays at a hidden stereo position. Click the 2D grid to identify both the frequency and pan.
Play
Reverb Master
Space
A hidden reverb is applied to audio. Match the room size, decay, pre-delay, damping, and wet/dry by ear.
Play
Delay Master
Time
Match a target delay by ear. Set delay time, feedback, and wet/dry to replicate the processed signal.
Play
Signal Chain Architect
EQ Dynamics
A hidden signal chain processes the audio. Listen and arrange the effects — EQ, compression, reverb, saturation — in the correct order.
Play
Music Theory
Chord Quiz
Theory
A chord plays in a random key. Identify the type — major, minor, dominant 7th, major 7th, diminished, augmented, and more.
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Progression Detection
Theory
Four chords play in sequence. Identify the Roman numeral progression — I–V–vi–IV, ii–V–I, and more across 3 difficulty levels.
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Interval Master
Theory
Two notes play in sequence or together. Identify the interval — minor 2nd, perfect 5th, major 7th, and more across three difficulty tiers.
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Staff Specialist
Theory
Read notes and chords on the grand staff. Identify note names in treble and bass clef, or name major and minor triads from their notation.
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Scale Quiz
Theory
An ascending scale plays in a random key. Identify the type — major, natural minor, pentatonic, modes, blues, whole tone, and more.
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Scale Sight
Theory
A scale is shown on the grand staff. Identify the key — no audio, pure sight-reading. Supports major, natural minor, harmonic minor, and melodic minor.
Play