Contents

Equalizer

The equalizer shapes the sound. It can be turned on/off via the EQ button on the transport bar and opened either embedded or in a separate window (setting under EQUALIZER → EQ view). As soon as the EQ is active, the signal badge shows DSP mode — the path is then deliberately no longer bit-perfect.

9.1 Presets and bands

At the top you choose a Preset or save the current state as your own via Save as. You switch the number of bands between 5 bands, 7 bands and 10 bands. You drag individual bands directly in the curve; Band + adds a band, Flat flattens the curve.

Screenshot 17: Curve display of the EQ: dragged bands, dB grid, zoom and pan sliders at the side — Fig. 17 — Curve display of the EQ: dragged bands, dB grid, zoom and pan sliders at the side

💡 Examining the curve more closely

The zoom slider at the curve compresses or stretches the dB range (down to ±3 dB for fine corrections); the pan slider moves the curve vertically. A double-click on the pan slider resets it.

9.2 Importing a headphone profile (PEQ)

MuSéa reads parametric correction profiles in AutoEq/oratory1990/EqualizerAPO format (ParametricEQ.txt). After the import the EQ equalizes your headphones automatically. Via the unload button you return to 7 bands.

ℹ️ Expected format

Text lines like Filter 1: ON PK Fc 1000 Hz Gain 3.0 dB Q 1.0. You find such profiles e.g. in the AutoEq database for many headphone models.

9.3 Phase mode, auto-gain, analyzer

Phase mode — Linear-phase (phase-pure, ~43 ms latency) or minimum-phase (0 ms latency).
Auto-gain — pulls the curve automatically below 0 dB and thus prevents overdriving.
Analyzer — shows the spectrum and level display.

9.4 Tone controls and crossfeed

In addition to the bands there are global controls for bass, mids, treble (±12 dB), a pre-gain (headroom against clipping) and the balance. Crossfeed softens the hard left/right separation on headphones (0 % = off). Reset tone controls sets all tone controls neutral.

9.5 Convolution (impulse response / FIR)

Via Load filter… you load a convolution filter (WAV impulse response or FIR text file), e.g. for room correction. A trim slider keeps the level against clipping; if the filter rate does not match the playback rate, MuSéa adjusts it automatically (resamples). The frequency response shows Target (filter) against Measured (engine).

Screenshot 18: Convolution area with a loaded filter and the frequency response “Target” against “Measured” — Fig. 18 — Convolution area with a loaded filter and the frequency response “Target” against “Measured”

🎧 EQ locked in DSD mode

With DSD/DoP playback the stream is output bit-exact — tone control is not possible there. The equalizer is deliberately disabled in this case.