Cheapest way to start?

SonaVyx is free, browser-based. Add USB measurement mic (under $30) for better accuracy. Provides RTA, transfer function, SPL, AI diagnostics at zero cost.

RTA vs transfer function for EQ?

Transfer function. RTA combines room + system. Transfer function separates via coherence, showing which frequencies have reliable data for EQ decisions.

Start at mix position. Add front, rear, left, right. Compare for consistent trends. EQ should improve most positions. Position-dependent issues need physical solutions.

Why measurement differs from hearing?

Hearing applies weighting, integration, binaural processing, cognition. Measurement shows physical reality. With experience, you correlate features. Trust measurements for objective decisions.

Cheapest way to start?

SonaVyx is free, browser-based. Add USB measurement mic (under $30) for better accuracy. Provides RTA, transfer function, SPL, AI diagnostics at zero cost.

RTA vs transfer function for EQ?

Transfer function. RTA combines room + system. Transfer function separates via coherence, showing which frequencies have reliable data for EQ decisions.

Start at mix position. Add front, rear, left, right. Compare for consistent trends. EQ should improve most positions. Position-dependent issues need physical solutions.

Why measurement differs from hearing?

Hearing applies weighting, integration, binaural processing, cognition. Measurement shows physical reality. With experience, you correlate features. Trust measurements for objective decisions.

Live Sound Measurement — Beginner's Guide

Live sound measurement uses microphones and analysis software to objectively evaluate system performance. Measurement replaces subjective listening with data-driven decisions for EQ, alignment, and diagnosis, enabling consistent results.

AES-2id:2023§4.1, 4.3, 5IEC 61260-1:2014§5.2

Equipment

Measurement mic (calibrated MEMS works to learn), reference signal path, software (SonaVyx in any browser). Free to start.

First: RTA

Pink noise through system. Flat = good. Peaks/dips = issues. Shows combined system + room.

Next: Transfer Function

Dual-channel per AES-2id. Separates system from room via coherence. Magnitude, phase, delay. Professional standard.

EQ Decisions

Address broad trends. 15 dB narrow dip = room (don't EQ). Focus on corrections improving multiple positions.

Mistakes

Too close to speaker. EQing modes. Ignoring coherence. No calibration. Trust data over ears when they disagree.

Try It Now

Start measuring — free, no download

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