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README.md

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+                <img src="graphics/logo.svg" width="200" height="200"/>
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+# Stereophonic Calculator
+
+[![Build](https://github.com/svetter/stereocalc/actions/workflows/build.yml/badge.svg)](https://github.com/svetter/stereocalc/actions/workflows/build.yml)
+
+Quickly find stereo microphone configurations for specific recording angles with this Android app.
+
+Inspired by and based on the data of [Michael Williams](http://www.williamsmmad.com/)'s paper **"The stereophonic zoom"** ([PDF](https://www.gracedesign.com/support/StereoZoom10.pdf), [Citation](https://api.semanticscholar.org/CorpusID:202598177)).
+
+> The "Stereophonic Zoom" enables the sound recording engineer to get much nearer to the optimum result in the great majority of recording environments.
+
+## Features
+
+- Set a desired Stereophonic Recording Angle (SRA) and explore combinations of microphone distance and angle to achieve it
+- Immediately see angular distortion and reverberation limits for each configuration
+- Microphone type switchable to omni mode for finding _AB_ (spaced pair) configurations
+- Live, to-scale **graphic representation** of the two microphones, showing distance and angle between them as well as the recording angle
+- **Interactive graph of configuration space**, modeled after the figures in _The stereophonic zoom_ with a heat map for angular distortion and outlines of reverberation limits
+- **Angle calculator** page for calculating a recording angle from basic length measurements
+- **Presets** for widely used configurations: **ORTF, NOS, DIN**
+- Programmable buttons for **user-defined** configurations
+- Units switchable between metric and imperial
+- Angles switchable between full and half (±)
+
+## Screenshots
+
+TODO