The Low End parameter is specifically designed to control the reverb time for low frequencies, providing a nuanced approach to how bass frequencies reverberate in a given space. This parameter offers 11 settings/multipliers, ranging from 0.10 to 10.0, including a linear (LIN/x1) setting which sets the multiplier to 1, meaning the low-end reverb time matches the overall reverb time.
This parameter addresses the distinct behavior of low frequencies in reverberant spaces. For instance, imagine a piano note around 440Hz/A4, it will cease echoing relatively swiftly. However, for lower notes, like E1, approximately 41.20Hz, the duration of their echo can be significantly adjusted using this parameter.
The Low End setting does not split the sound into parts but rather modulates the reverb characteristic as it would naturally occur in large spaces. In such environments, deeper sounds, like a low A0/27.5Hz, tend to reverberate longer than higher-pitched sounds, like a whistle.
With the Low End parameter, users can manipulate these very low bass frequencies at around 40Hz, adjusting from a brief echo to an extensively prolonged one, up to 10 times longer than the main reverb time. However, it's important to note that there's a practical limit to the duration of this echo, particularly for these deep bass frequencies. This limit is influenced by the simulated room size, with the maximum echo at 40 Hz being up to four times the longest possible echo for that room.
This parameter is a critical tool for audio engineers and producers, allowing them to achieve a more realistic and immersive reverb experience, especially when dealing with content rich in low frequencies. It provides the flexibility to create everything from tight and controlled bass reverberations in smaller room settings to expansive and lingering bass echoes in larger acoustic spaces.