The attenuation profile controls how the volume output changes as you adjust the volume knob or scroll through steps. Rather than a simple 1-to-1 mapping, different curve profiles shape the relationship between your input position and the actual output level — giving you control that feels natural, precise, or aggressive depending on your application. The WVC supports a full attenuation range from −96 dB (silence) to 0 dB (full output). Five profiles are available, each suited to a different listening or competition scenario.
Attenuation Curve Comparison
Attenuation at Key Volume Points
The table below shows approximate dB values at key knob positions for each profile. Actual values vary slightly by curve shape.
| Volume Position | Inverse Log (Default) | Linear | Audio Taper | S-Curve | Competition |
|---|---|---|---|---|---|
| 0% | −96 dB (mute) | −96 dB (mute) | −96 dB (mute) | −96 dB (mute) | −96 dB (mute) |
| 25% | −47 dB | −72 dB | −93 dB | −81 dB | −96 dB |
| 50% | −25 dB | −48 dB | −80 dB | −48 dB | −90 dB |
| 75% | −11 dB | −24 dB | −50 dB | −15 dB | −66 dB |
| 100% | 0 dB (full) | 0 dB (full) | 0 dB (full) | 0 dB (full) | 0 dB (full) |
Attenuation profiles require firmware 3.2 or later on both the knob and the base station. Update both devices via the AuralSync app before configuring this feature. See the Firmware Updates article for instructions.
Accessing the Volume Curve Setting
In the AuralSync app, open your device and navigate to Base Settings. Scroll to the bottom to find the Volume Curve selector. The current profile is shown; tap it to choose a different one. Each profile displays a visual graph of the attenuation curve so you can see the shape before applying it.
Inverse Log Profile (Default)
The Inverse Log profile is the factory default and the most commonly used curve. It matches the way human hearing perceives loudness — volume changes feel more significant at lower levels and gradually level off as you approach maximum. This means you get fine, precise control during quiet listening and broader steps at higher volumes where small differences are less noticeable. Most users should leave this setting at its default.
Linear Profile
The Linear profile maps volume input to output in a straight 1-to-1 relationship. Every increment of the knob produces exactly the same dB change, regardless of where you are in the range. This gives you perfectly predictable, uniform volume steps from minimum to maximum. Linear mode is particularly useful when using your unit as a remote gain controller in a calibrated system, during DSP tuning sessions, or any scenario where you need to know exactly how much the output changes per step.
Audio Taper Profile (Industry Standard A-Curve)
The Audio Taper profile follows the industry-standard A-curve specification used in professional audio potentiometers worldwide. It uses a steeper exponential curve (approximately x^2.5) compared to the Inverse Log, which means volume stays very low in the bottom portion of the range and rises sharply in the upper half. This closely mimics the feel of a high-quality analog volume pot found in professional mixing consoles and audiophile equipment. Choose this profile if you prefer the classic "hi-fi potentiometer" feel.
S-Curve Profile
The S-Curve profile applies a gentle taper at both the bottom and top of the range, with the steepest rate of change in the middle. This gives you fine control at very low and very high volumes, with a broad, responsive sweep through the mid-range. It is well suited to systems where you frequently operate near the extremes of the volume range and want precision at both ends.
Competition Profile
The Competition profile keeps volume low for approximately the first 70% of the knob's travel, then rises steeply through the remaining range. This means the system stays quiet through most of the knob rotation, with the majority of the volume change concentrated in the top 30%. Designed for SPL competition use where you want a dramatic ramp to full output.
Choosing the Right Profile
| Profile | Best For |
|---|---|
| Inverse Log (Default) | Everyday listening; natural, human-hearing-matched response |
| Linear | DSP calibration, gain staging, technical tuning sessions |
| Audio Taper | Users who prefer the feel of a classic analog hi-fi volume pot |
| S-Curve | Precision at both low and high volume extremes |
| Competition | SPL competition; dramatic near-silent to full-volume sweep |
If you would like a curve not listed here, contact LF Audio — additional profiles may be added in future firmware updates.