Overview

Barometer is a precision metering and gain staging utility. It passes audio through with zero latency while providing LUFS, true-peak, and dynamic range measurements alongside essential utility controls.

Interface Layout

Metering Display

The readout strip below the controls shows real-time loudness data: momentary LUFS (M), short-term LUFS (S), integrated LUFS (I), true-peak (TP), and loudness range (LRA). All LUFS measurements follow ITU-R BS.1770-4. Double-click the readout strip to reset integrated and true-peak hold values.

Utility Controls

Gain, phase, balance, width, mono, swap, DC filter, and output trim. These let you prep your signal for delivery without leaving the metering view.

Signal Flow

Audio flows through Barometer in this order:

Input Meter→DC Filter→Gain→Phase→Balance→Width→Mono→Swap→Solo→Output Trim→Output Meter / LUFS / True Peak

Input Meter captures peak levels before any processing for A/B comparison.

DC Filter is a 5 Hz high-pass filter that removes DC offset - common in some analog hardware chains and certain plugin interactions.

Gain adjusts the signal level. Range: -96 dB (mute) to +24 dB.

Phase inverts polarity on L, R, or both channels (when linked). Essential for checking phase coherence in multi-mic setups.

Balance shifts the stereo image left or right (-100 to +100).

Width controls stereo width from 0% (mono) to 200% (widened).

Mono sums to mono for compatibility checking.

Swap exchanges left and right channels.

Solo L / Solo R isolates a single channel for independent monitoring.

Output Trim sets the final level after all processing (-12 to +12 dB).

Output Meter / LUFS / True Peak measures the final output: peak levels, LUFS loudness (momentary, short-term, integrated), true-peak (4x oversampled), and loudness range (LRA).