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A quick rundown on each feature and its settings



Legacy mode

Legacy mode is turned off by default, because features will become available in Wavelet whenever an application notifies the operating system about music playback starting by sending a broadcast. Many music players send a broadcast, thus features in Wavelet will show up. Other music players do not send a broadcast. Therefore no features will show up. You can try enabling legacy mode and see if your device allows Wavelet to process your music in this mode. Legacy might work, depending on your device manufacturer’s audio framework implementation.
You will have to experiment with legacy mode and see what works best.

:heavy_check_mark: List of players with support for audio processing:

:x: List of players lacking support for audio processing:

Enhanced session detection

Disclaimer: Enhanced session detection is experimental and available only for Android 10 and up.
If you choose to activate enhanced session detection, Wavelet will actively listen for music sessions instead of relying on being notified when a session starts. The DUMP permission is required to allow Wavelet to filter the required information from the device system services needed to attach and release audio effects to audio sessions. The advantage of enhanced session detection is that there is no need to depend on other applications opening and closing their audio sessions properly, which means it should work properly with every media session.

Instructions to activate enhanced session detection:

If you wish to switch back to the old behaviour, you can do so by disabling notification listener access for Wavelet and/or by running pm revoke com.pittvandewitt.wavelet android.permission.DUMP.

Buffer size

Buffer size allows for setting the audio processing precision. A low buffer size corresponds to less precision and lower latency. A high buffer size corresponds to better precision and higher latency.
A low buffer size is recommended when watching videos but not when listening to music.
On Android 9 it is recommended to max out buffer size, to minimize clipping issues in the lower frequencies


The AutoEq feature contains precalculated results from jaakkopasanen’s great work. Over 2500 entries are shipped with Wavelet and contain the optimal frequency response compensation for those specific headphone models.

Graphic equalizer

The graphic equalizer consists of 9 bands. You can set each slider independently to change the balance in frequency response or to remove obvious imbalance issues. You can also use this feature to compensate the frequency response of your speakers or your headphones if they’re are not listed in the AutoEq section, or if you would like to add some coloration to your audio stream.

Bass boost

Bass boost is available on Android 9 exclusively. It amplifies the lower frequencies.


Reverberation is available if legacy mode is disabled. It adds the effect of a sound bouncing of the wall from a room you would be listening in.


Virtualization is the effect of spatializing audio channels. This effect will widen the stereo image (when listening in stereo).

Bass tuner

Bass tuner allows you to set a very precise bass boost or reduction. This can be useful if your speaker system has a resonant peak in the lower frequencies or a point where long soundwaves cancel each other out.


The limiter removes volume spikes from your audio streams. Sometimes this is desired in noisy environments where you need to turn up the volume in quiet parts of the music and later turn it down when the music becomes louder.

Channel balance

Channel balance allows you to control the left and right channel output volumes separately. This can come in handy when you can’t sit in center of your speaker setup or when your headphones have a difference in impedance between their left and right channels. Some phones have a limiter built in that causes volume ducking when you boost above a certain amount of dB. You can also use this feature to control the overall volume output and to prevent this ducking from happening.