Use Your Ear vs BrownBox

The 9 pivot points: · **50 Hz** — Depth & Weight · **100 Hz** — Warmth & Punch · **200 Hz** — Thickness & Mud · **500 Hz** — Boxy & Gargle · **1 kHz** — Nasal & Knock · **2 kHz** — Edge & Clarity · **5 kHz** — Presence & Bite · **10 kHz** — Sizzle & Snap · **20 kHz** — Air & Plastic Each pivot mapped to perceptual adjectives — so you don't just memorize numbers, you learn what they SOUND like. Four training modes: EQ Workbench — Interactive 9-band parametric. Drag nodes vertically for gain, scroll wheel for Q, double-click to reset. Frequencies are locked to the pivot points (that's the whole point). Quiz — Blind pivot trainer. The app boosts or cuts a random pivot on pink noise at Easy / Medium / Hard difficulty. A/B between processed and bypass, then pick the frequency + direction. Scoring tracks your accuracy over time. Listen — A/B reference mode. Set gain and Q on a single pivot, toggle A/B against bypass, and read the "Boost to..." / "Cut to..." cheat sheet. Train your ear by hearing the same EQ move at multiple frequencies. Sweep — Manual sine tone across the spectrum, plus an automatic logarithmic sweep from 20 Hz to 20 kHz with the nearest-pivot readout. Hear the spectrum, build the mental map. Sources: · Pink noise (Paul Kellet generator, 4-second loopable buffer) · Sine tone · Log sweep · Your own audio file · Live microphone (with feedback warning) Hearing safety built in: Three independent ways to instantly stop audio: 1. Mute button — instant silence, playback can resume 2. Stop button — tears down the audio source completely 3. Always: keep your master volume LOW, use headphones at safe levels Sine tones and sweeps are internally attenuated to 15% of full scale. Why is it free? Tomorrow's working sound engineers are today's audio students. We want you to learn properly — not paywalled, not gated, not crippled. No ads. No data harvesting. Just a real tool. Where next? · Surviving Audio — Plan and design PA systems before the show · Soundtools Pro — Real-time tools during the show Three apps, one story: train, plan, execute.

BrownBox reads an L-Acoustics Soundvision System Report and hands you every hang the way you rig it: box counts, per-box splay, top and bottom trim, weight with the flying frame, bumper count, pickup hole and site angle. Open the PDF on your phone, walk to the point, and the numbers are in your hand. Built by a touring audio tech, for the people who fly the PA. EVERY HANG AT A GLANCE • Import any Soundvision System Report (PDF) — straight from Files, Mail or AirDrop • Mains, subs, fills and delays laid out like the console, each with box count and cabinet models • Per-box splay angles and a side-profile view of the array • Top trim and bottom trim, in feet or metres RIGGING, NOT JUST ACOUSTICS • Weight per array, including the flying frame, in lb or kg • Bumper count, pickup hole and front/rear pins from the report • Site angle starred on a two-motor hang, pickup hole starred on a one-motor hang, so the number that actually sets the tilt is the one you see first • Verified cabinet weights for K1, K2, K3, KARA II, KIVA II, A15, A10, KS28, KS21, SB18, SB15m, L2, L2D, SYVA, SYVA LOW, X8, X12, X15 — anything estimated is marked ≈ THE RIGGER LIED (Pro) • Riggers report the as-built trim or site angle from their own phones with a short show code • The lead sees every hang that's off from the design, live, as it's flown ON SITE • Track each hang from Pending to Deployed to Noised, with a Noised tab for system check • Share a rig card — trim, weight, splays, holes — as an image straight into the show chat • Works offline. No account. Your designs never leave your phone unless you share them. FREE AND PRO Importing reports, box counts, splays, the side profile and the status tabs are free. BrownBox Pro ($24.99/year) unlocks weight, top and bottom trim, full rigging detail, the rig card and the live Rigger Lied sync. Auto-renewing annual subscription, cancel anytime in Settings. eighty32 — field tools for AV, RF & broadcast. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://brownbox.eighty32.com/privacy BrownBox Pro is an auto-renewable annual subscription ($24.99/year or local equivalent). Payment is charged to your Apple Account at confirmation and renews automatically unless cancelled at least 24 hours before the current period ends.