Kuvert envelope shaper effect plugin by Klevgrand interface

Kuvert: Envelope Shaper Effect Plugin by Klevgrand Free Download

Rated 4.5/5 on Plugin Boutique (192 ratings)

Kuvert is an envelope shaper effect plugin by Klevgrand that lets you draw five looped envelopes to control volume, filters, timing and delay sends. The incoming audio is not looped, only the envelopes are.

VST2AUAAXWindowsmacOS

AVAILABLE ATPlugin Boutique

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Free trial available from the developer

01Overview

Kuvert takes a different approach to effects processing. Instead of a fixed setting, you draw envelopes that repeat over time and shape the sound as it plays. The plugin includes envelopes for volume, a low cut filter with resonance, a high cut filter with resonance, a glitch envelope that alters timing, and a delay send with tempo-synchronized time, filter and feedback. Because the envelopes loop, the effect locks to the rhythm of your material, which suits beats and other repeating parts.

Best for

Revitalizing loopable beats
Rhythmic filter sweeps
Glitch and stutter effects
Tempo-synced delay movement
Experimental sound design

Developer: Klevgrand
Category: Envelope Shapers
Store: Plugin Boutique

02Key features

What you get

Five independent looped envelopes for effect parameters
Volume envelope for rhythmic gating and level movement
Low cut filter envelope with resonance control
High cut filter envelope with resonance control
Glitch envelope that alters timing
Delay send envelope with tempo-synced time
Delay envelope includes filter and feedback controls
Envelopes drawn freely or snapped to a grid

03In depth

How the Envelope Looping Works

Kuvert lets you draw five envelopes, either freely or snapped to a grid. Each envelope controls a different effect parameter, and each one loops. The incoming audio does not loop, so the effect runs across your signal while the envelope pattern repeats.

The developer describes this as a way to alter sounds in a way that can become hard to recognize. Because the pattern repeats, it stays consistent with the groove of a looped part, which makes it practical for rhythmic processing.

Filters, Glitch and Delay Controls

The two filter envelopes each include resonance, so you can sweep low cut and high cut behavior over time. The glitch envelope changes timing, which can break up a loop in a rhythmic way.

The delay send envelope is tempo synchronized and includes its own filter and feedback controls. Together, these give you a way to add repeats and movement that follow the pattern you draw.

04Specs

Will it run?

Formats, systems and requirements as listed by Plugin Boutique. Missing details are left out, not guessed.

Developer	Klevgrand
Type	Plugin
Category	Envelope Shaper
Formats	VST2, AU, AAX
Operating systems	Windows, macOS
Free trial	Yes

05FAQ

Questions, answered

What is Kuvert?

Kuvert is an envelope shaper effect plugin by Klevgrand. It uses five looped envelopes to control volume, filters, timing and a delay send.

Which formats and operating systems does Kuvert support?

Kuvert is available in VST2, AU and AAX formats. It runs on Windows 7 SP1 or later and macOS 10.10 or later, and is optimized for the M1 processor on macOS.