https://github.com/echometerain/ampter

An app that lets you paint on sound
https://github.com/echometerain/ampter

audio-effects audio-processing audio-visualizer music spectrogram vst

Last synced: 2 days ago
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An app that lets you paint on sound

• Host: GitHub
• URL: https://github.com/echometerain/ampter
• Owner: echometerain
• License: gpl-3.0
• Created: 2023-03-04T00:00:02.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-01-26T19:13:10.000Z (10 months ago)
• Last Synced: 2024-01-26T20:36:54.494Z (10 months ago)
• Topics: audio-effects, audio-processing, audio-visualizer, music, spectrogram, vst
• Language: Java
• Homepage:
• Size: 9.44 MB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Ampter

Audio Mastering Painter, an app that lets you paint on sound.

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![image](https://github.com/echometerain/Ampter/assets/70437021/12fae264-0db4-43e6-b3ee-d0ee6431c5c7)

- Dragging your mouse across the spectrogram will apply your chosen effect onto the region you selected

- Try selecting `Gain` in the effects menu, setting `gain_db` to `20`, drawing on the spectrogram, and hearing what it sounds like

---

![image](https://github.com/echometerain/Ampter/assets/70437021/992a6be4-7638-4959-87e5-f33b800d87a9)

---

Shortcuts:

- **Click:** change playhead position

- **Drag:** draw with brush (effect)

- **Scroll:** move left/right one block (.25 second) at a time

- **Shift scroll:** stretch/squeeze spectrograms

- **Left arrow:** move left 1 second (same as “move left” button)

- **Right arrow:** move right 1 second (same as “move right” button)

- **Space:** play/pause

- **(options spinner) Enter:** remove focus from spinner and save changes

Usage:

- Run `pip install -r requirements.txt` to get the python dependencies

- If cloning from github, get the `.jar` file from [Releases](https://github.com/echometerain/Ampter/releases), place it at the root of the repo and click on it (or run `java -jar ./Ampter.jar`)

- If that doesn’t work, open the repo as a netbeans project and manually load the [flatlaf](https://www.formdev.com/flatlaf/) and [jep](https://github.com/ninia/jep) dependencies

  - Build the jar with `Files tab>build.xml>right click>Run Target>Other Targets>package-for-store`

Bugs:

- If any of the three singletons crash the whole program becomes unusable

- Loading a non-audio-file as audio crashes the program

- Loading a non-vst-folder as a vst crashes the program

- If you set the gain too high you get really scary aliasing artefacts

- No spectrograms can be calculated when you are playing audio because jep can only allow python to run in one thread (and I don’t want to pass a multi-megabyte array between two languages)