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https://github.com/eins78/audioplotter
generate vectorgraphics for pen plotting from audio files
https://github.com/eins78/audioplotter
Last synced: about 1 month ago
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generate vectorgraphics for pen plotting from audio files
- Host: GitHub
- URL: https://github.com/eins78/audioplotter
- Owner: eins78
- License: gpl-3.0
- Created: 2021-04-06T07:09:27.000Z (over 3 years ago)
- Default Branch: next
- Last Pushed: 2022-10-31T19:38:32.000Z (about 2 years ago)
- Last Synced: 2024-04-15T03:00:39.986Z (9 months ago)
- Language: JavaScript
- Homepage: https://audioplotter.ars.is
- Size: 2.09 MB
- Stars: 12
- Watchers: 4
- Forks: 2
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# audioplotter
create graphics for penplotters from audio files, aka waveforms, soundwaves.
- analyses audio: calculate "peaks" (volume per time slot for N numbers of slots)
- visualize peaks styles:
- `zigzag`: alternates drawing points above and below the horizontal centerline.
looks like a standard waveform from far, and like a frequency graph up close.
_Not symmetric_
- `saw`: follows a [Sawtooth wave](https://en.wikipedia.org/wiki/Sawtooth_wave) pattern.
_Is symmetric but has more line density per bands._
## Ideas
- addCaps: also add line of configurable length to start and end (like starting with silence, but just a horixontal line)
- playback of the audio
- show audio file info
- better download option
- options to trim start/endpoint of audio (needed for amen break demo, wikimedia hosted file hast context around it)
- separate frequencies, create 1 graph per band in different colors (low/red,mid/green,high/yellow)
## Credits
Thanks to Matthew Ström for writing the article ["Making an Audio Waveform Visualizer with Vanilla JavaScript" on css-tricks.com](https://css-tricks.com/making-an-audio-waveform-visualizer-with-vanilla-javascript/) and [open-sourcing the example code](https://codepen.io/matthewstrom/pen/mddOWWg), on which the initial prototype of this tool is based.
## tests
_Work In Progress, only 1 "smoke" scenario implemented so far_
- Written using RSpec, run with Docker.
- Setup based on examples:
-
-
```bash
cd spec
bin/build
bin/rspec features/example_spec.rb
```
## Development
This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app).
### Getting Started
First, run the development server:
```bash
npm run dev
# or
yarn dev
```
Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
You can start editing the page by modifying `pages/index.js`. The page auto-updates as you edit the file.
[API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `pages/api/hello.js`.
The `pages/api` directory is mapped to `/api/*`. Files in this directory are treated as [API routes](https://nextjs.org/docs/api-routes/introduction) instead of React pages.
### Learn More
To learn more about Next.js, take a look at the following resources:
- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome!
### Deploy on Vercel
The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details.