Maximum Reverb Sound Effect Repack -

This paper addresses the challenges of storing, organizing, and rendering maximum reverb sound effects—defined as reverberation with decay times exceeding 10 seconds and dense modal structures—within digital audio workstations (DAWs) and game audio engines. We propose a repacking methodology that combines lossless compression of long impulse responses (IRs), metadata tagging for perceptual similarity, and a real-time convolution engine optimized for low memory footprint. Experiments compare traditional WAV-based IR libraries against our repacked format (.mreverb) in terms of storage size (reduction of 68–82%), loading time, and CPU usage during playback. Subjective listening tests indicate no audible degradation for extreme reverb tails when using our proposed psychoacoustically masked truncation and dithering scheme. Finally, we release an open-source tool for repacking existing reverb IRs into the proposed format.

Online editors discovered that taking a normal sound (like a door slam or a Mario coin) and dousing it in a 100% wet reverb creates an immediate comedic or eerie effect. The "Maximum Reverb" meme often involves sounds that take 30 seconds to fully fade out, creating an awkward, hilarious, or terrifying pause in content.

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Single words or syllables (Ahhh, Ohhh, Hey) stretched and echoed. When played in reverse, these create haunting pre-verb effects. This is the bread and butter of horror game sound design and ambient black metal intros.

The repack method exploits the perceptual irrelevance of fine temporal structure in extremely long reverb tails. By modeling the tail as a decaying stochastic process, we achieve a 7× storage reduction compared to lossless compression, while enabling real-time performance for the first time with “maximum reverb” lengths. Limitations: The method is not suitable for reverbs with strong time-varying modulations (e.g., shimmer reverbs). This paper addresses the challenges of storing, organizing,

| Problem | Likely Cause | Solution | |---------|--------------|----------| | Muddy mix | Too much low-end reverb | EQ reverb return: HPF @ 200 Hz | | Loss of punch | Dry signal too quiet | Increase dry/wet ratio to 60/40 or use parallel reverb | | Washy transients | No pre-delay | Add 50–150 ms pre-delay | | Build-up over time | Long decay on many tracks | Send multiple tracks to one reverb bus; decay time automation | | Artifacts or ringing | Low-quality IR or plugin | Try different IR; use algorithmic reverb instead |

Our .mreverb repack consists of three layers: Psychoacoustically masked truncation