WiiM’s RoomFit™ feature optimizes sound quality by analyzing the acoustic characteristics of your room. Before running the RoomFit™ process, you can customize its settings to match your preferences. This article introduces each RoomFit™ setting in detail.

Target Curve

This setting defines the target frequency response that your WiiM device tries to match after calibration. You can choose from B&K, Harman, and Flat.

B&K

The B&K target curve is a gently downward-sloping frequency response designed to approximate the natural spectral balance of sound in real listening rooms.

Characteristics: Neutral tuning that preserves the speaker’s flat on-axis response.

Harman

The Harman target curve is a frequency response based on listener preference studies.

Characteristics: Warm tuning that adds some bass boost to an otherwise flat on-axis response.

Flat

A Flat target curve reproduces all frequencies from 20 Hz to 20 kHz at the same level.

Characteristics: Bright tuning that creates an upward slope in the loudspeaker’s on-axis response.

Frequency Range

This setting defines the frequency range that RoomFit™ will measure and adjust.

If your speakers have bass enhancement, it's recommended to exclude that frequency range.

Max Gain

This setting adjusts the maximum amount of boost RoomFit™ can apply to any frequency band during calibration.

Adjust the volume level during calibration. Set gain according to the room's acoustic characteristics and personal preference to avoid distortion or unnatural sound.

Min Gain

This parameter sets the maximum amount of cut (reduction) RoomFit™ can apply to any frequency band during calibration.

Max Q

This setting controls how narrow or wide RoomFit™ can make its sound adjustments.

  • Lower Q values are suitable for smooth frequency response adjustments.
  • Higher Q values are used for precise correction of specific frequency peaks and dips but may cause "ringing."

Non-Boost Mode

This setting ensures that the sum of all correction values does not exceed 0 dB, preventing distortion and clipping caused by excessive boosting.

Built-in Mic Compensation

This setting compensates for the built-in microphone’s deviations, ensuring more accurate RoomFit™ measurements.

Note: This setting is only available on iOS.

External Mic Calibration

This setting lets you import a calibration file for an external microphone to achieve more accurate RoomFit™ measurements. For details, see Using an External Microphone for RoomFit™ Room Correction.

Note: This setting is available only when an external microphone is connected to your mobile device.

Subwoofer Calibration

This setting allows subwoofer calibration during the RoomFit™ process.

This setting is available only when your WiiM device is connected to a subwoofer.

Check your subwoofer's crossover frequency and ensure the start of the frequency range for correction is above this crossover to avoid incorrect adjustments for your room's acoustics.

Moving Mic Measurement (Beta)

This setting allows an advanced calibration method that measures sound throughout the listening environment, resulting in more balanced and consistent audio performance. For details, see Introducing RoomFit™ Room Correction with MMM (Beta).

Smoothing

This setting determines how smooth the frequency response curve appears. Higher smoothing makes the curve cleaner but reduces detail. Lower smoothing reveals more detail but may look noisier.

  • 1/3 Octave: Strong smoothing. Shows overall trends, hides fine details.
     
  • 1/6 Octave: Balanced smoothing. Good mix of clarity and detail.
     
  • 1/12 Octave: Light smoothing. Reveals more detail but may look uneven.
     
  • Variable: Automatically adjusts smoothing depending on frequency. Light smoothing on bass for detail, heavier on treble for readability.
     
  • Psychoacoustic: Smoothing according to how humans hear. Hides the tiny acoustic bumps that microphones measure but your ears can't actually hear.
     
  • ERB: Smoothing based on advanced"human hearing" mode. It provides more detail than Psychoacoustic while still considering human perception.

Multiple Measurements (Beta)

This setting allows multiple measurements for enhanced calibration accuracy.

Tip

For recommended RoomFit™ settings, refer to A Practical Guide to RoomFit™Room Correction for Enhanced Sound Quality.