fix: EqualizerSingle filter distorts audio

[bemain]

Description

Simply activating the equalizer filter on a single AudioSource causes the audio to be heavily distorted. Changing the filter parameters doesn't remove the distortion.

Steps To Reproduce

final source = await SoLoud.instance.loadFile(...);
source.filters.equalizerFilter.activate();
await Soloud.instance.play(source);

Expected Behavior

The audio is expected to play as normal when the equalizer filter is activated with default parameters.

Additional Context

Tested platform(s): Android

Potentially related to #171