Use Your Ear vs Audiolyze

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.

Transform your iPhone or iPad into a professional audio analysis workstation. Audiolyze delivers real-time spectrum analysis, waterfall spectrograms, and oscilloscope visualization with the precision tools you need for sound engineering, acoustic analysis, and audio production. SPECTRUM ANALYZER Visualize audio frequencies in real-time with a high-resolution FFT spectrum analyzer. Choose from multiple display modes (dB, Amplitude, Power) and trace styles (smooth spline curves, linear, or classic bars). Switch between logarithmic and linear frequency scales, and select from multiple constant-Q resolutions for RTA analysis, from 1 octave down to 1/24 octave precision. WATERFALL SPECTROGRAM Track how your audio evolves over time with a scrolling 2D spectrogram display. Capture up to 20 seconds of frequency history to identify temporal patterns, transients, and spectral changes that a standard analyzer would miss. OSCILLOSCOPE Examine waveforms in the time domain with a responsive oscilloscope view. Multiple trigger modes (rising edge, falling edge, auto, free-run) help you capture stable waveforms, with adjustable amplitude scaling and trigger threshold controls. HARMONIC ANALYSIS Automatically detect and display harmonics with intelligent fundamental frequency tracking. View overtone relationships, cent deviations, and harmonic order labels overlaid directly on the spectrum — valuable for tuning, voicing, and timbre analysis. SPL REFERENCE LEVELS View relative sound pressure level readings with a built-in SPL meter. Calibrate against an external reference meter to align readings, with optional Z-weighting (flat response) or A-weighting (human hearing curve). Provided for reference and comparison; not a substitute for a certified, type-approved sound level meter. ADVANCED SIGNAL PROCESSING - Multiple FFT sizes (512 to 4096 samples) - Selectable window functions: Hann, Blackman-Harris, Flat-Top - Configurable frame overlap (0-75%) for improved averaging - Rolling window and exponential smoothing modes - High-pass and low-pass filters with adjustable slopes (6/12/18 dB per octave) CUSTOMIZE YOUR WORKFLOW - Peak hold display with decay - Snapshot comparison for before/after analysis - Visual glow effects for enhanced readability - Sparse or dense grid overlays - Save and recall custom presets for each visualization mode FOR SOUND ENGINEERS & MUSICIANS Whether you're a sound engineer tuning a PA system, a musician analyzing instrument tone, a podcaster optimizing room acoustics, or an audio enthusiast exploring the science of sound, Audiolyze provides the analytical depth you need in a beautiful, intuitive interface. EVERYTHING UNLOCKED Every feature is available from the moment you launch. No subscriptions, no in-app purchases, no paywalls, and no ads. Works on iPhone and iPad. Optimized for performance with GPU-accelerated Metal rendering. Available in 13 languages.