# Jacquardi — Envelope Module (AUv3 plugin)

> MIDI envelope generator AUv3 plugin for parameter modulation. (iPhone/iPad app by Satoshi Kajii.)

- Source: https://appshunter.io/ios/app/jacquardi/id6738633198 (this page in markdown: same URL + `.md`)
- Developer: [Satoshi Kajii](https://appshunter.io/developer/1777441634)
- Category: Music
- Price: $1.99 (on sale, was $2.99)
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Released: 2024-11-26
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/jacquardi/id6738633198/reviews.md

## What is Jacquardi?

Concept:
"Jacquardi" is an AUv3 instrument that does not make any sounds but just sends out analog-like Envelope signal via MIDI Control Change (MIDI CC). That is, the app is a MIDI module of envelope generator. The user can use it for modulating any parameter of 3rd-party’s plugin that can be assigned to MIDI CC , for example, filter cutoff.

Usage:
Just assign MIDI keyboard to Jacquardi's MIDI IN (it needs to trigger Jacquardi) and assign Jacquardi's MIDI OUT to 3rd party's plugin.

System Requirements:
Auv3 host that has a flexible capability of MIDI routing (AUM, apeMatrix etc).

## Key features

- Generates analog-like envelope signals
- Sends MIDI CC for parameter modulation
- Works with 3rd-party AUv3 plugins
- Requires MIDI routing host (AUM, apeMatrix)
- Modulates filter cutoff and other parameters


## Frequently asked questions about Jacquardi

### What is Jacquardi?

Jacquardi is an AUv3 instrument that generates analog-like envelope signals via MIDI Control Change (MIDI CC). It functions as a MIDI module for modulating parameters of other compatible plugins.

### Does Jacquardi make sound?

No, Jacquardi does not produce any sound itself. Its purpose is to send MIDI CC signals to control parameters of other audio plugins.

### How do I use Jacquardi?

You need to assign a MIDI keyboard to Jacquardi's MIDI IN to trigger it, and then assign Jacquardi's MIDI OUT to the 3rd-party plugin you wish to modulate.

### What are the system requirements for Jacquardi?

Jacquardi requires an AUv3 host with flexible MIDI routing capabilities, such as AUM or apeMatrix, and is compatible with iPhone, iPad, and iPod.

### What can I modulate with Jacquardi?

You can use Jacquardi to modulate any parameter of a 3rd-party plugin that can be assigned to MIDI CC, such as filter cutoff, volume, or LFO depth.

### How much does Jacquardi cost?

Jacquardi is a paid application priced at $3.99.

### When was Jacquardi last updated?

The latest version of Jacquardi, 1.0.2, was released on December 10, 2024.

### Is Jacquardi suitable for beginners?

Jacquardi is designed for users familiar with MIDI routing and AUv3 plugins. While it offers creative possibilities, a basic understanding of music production workflows is recommended.

## Version history (last 3 releases)

### 1.0.2 — 2024-12-10

Issue (“always sending out midi message”) happened: Now resolved!

### 1.0.1 — 2024-12-02

minor fixes:
“Decay time” resolution is corrected. Now the parameter range is from 0.01 to 1.0 (for faster attack)
“Amp” parameter range is now from 0.0 to 4.0

### 1.0 — 2024-11-26

No release notes.

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## More apps by Satoshi Kajii

- [StereoLoco](https://appshunter.io/ios/app/stereoloco/id6737751583)
- [shortReverse](https://appshunter.io/ios/app/shortreverse/id6738296410)
- [DeDrummer](https://appshunter.io/ios/app/dedrummer/id6744193942)
- [pitchBender](https://appshunter.io/ios/app/pitchbender/id6744398563)
- [DeHiss](https://appshunter.io/ios/app/dehiss/id6744572519)

All apps by Satoshi Kajii: https://appshunter.io/developer/1777441634

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*