Custom Audio Tuner & DSP Matrix

Overview

The {tune} and {eq} parsers give server administrators and users complete access to Lavalink’s digital signal processing (DSP) audio pipeline.

Lavalink divides the human audible spectrum into 15 distinct frequency bands:

Band Index	Center Frequency	Audio Character	Recommended Boost / Cut
Band 0	`25 Hz`	Sub-Bass (Deep Rumble)	`0.15` to `0.35` for EDM/Trap
Band 1	`40 Hz`	Deep Bass (Kick Drums)	`0.15` to `0.30`
Band 2	`63 Hz`	Punchy Bass (Bass Guitar)	`0.10` to `0.25`
Band 3	`100 Hz`	Warmth / Upper Bass	`0.05` to `0.15`
Band 4	`160 Hz`	Low Midrange (Snare Body)	`-0.05` to `0.10`
Band 5	`250 Hz`	Midrange Body	`0.0` (Neutral)
Band 6	`400 Hz`	Vocals Low Fundaments	`0.0` (Neutral)
Band 7	`630 Hz`	Mid Vocal Presence	`0.05` for vocal clarity
Band 8	`1.0 kHz`	Lead Instruments & Presence	`0.05` to `0.10`
Band 9	`1.6 kHz`	High Midrange (Vocal Bite)	`0.10`
Band 10	`2.5 kHz`	Crispness & Attack	`0.10` to `0.15`
Band 11	`4.0 kHz`	Presence & Definition	`0.15`
Band 12	`6.3 kHz`	Treble / High Shimmer	`0.20`
Band 13	`10.0 kHz`	High Treble & Air	`0.20` to `0.30`
Band 14	`16.0 kHz`	Ultra High Brilliance	`0.15` to `0.25`

Gain values range from -0.25 (Complete attenuation / -100% mute) to 1.0 (+100% amplification).
Setting 0.0 represents neutral flat response.

{tune:speed=0.85, pitch=0.85, lowpass=20, 8d=0.25}

{tune(speed):1.25} — Playback speed multiplier (0.1 to 3.0).
{tune(pitch):1.3} — Audio pitch multiplier (0.1 to 3.0).
{tune(rate):0.9} — Sample rate multiplier (0.1 to 3.0).
{tune(bass):0.85} — Low-end equalizer boost (-0.25 to 1.0).
{tune(treble):0.5} — High-end equalizer boost (-0.25 to 1.0).
{tune(8d):0.25} — 8D audio rotation frequency in Hz (0.01 to 5.0).
{tune(lowpass):20} — LowPass smoothing cutoff (1 to 100).

Pass gain multipliers separated by commas across all 15 bands:

<!-- Bass + Treble Boost Curve -->
{eq:0.3, 0.25, 0.2, 0.1, 0, 0, 0, 0, 0, 0, 0, 0.1, 0.2, 0.25, 0.3}

Acoustic Profile	Speed	Pitch	Rate	LowPass
Nightcore	`1.25`	`1.30`	`1.00`	Disabled
Slowed + Reverb	`0.85`	`0.85`	`1.00`	`20`
Vaporwave	`0.80`	`0.75`	`1.00`	Disabled
Chipmunk	`1.10`	`1.80`	`1.00`	Disabled
Darth Vader	`0.90`	`0.60`	`1.00`	Disabled
Double Time	`2.00`	`1.00`	`1.00`	Disabled