# Input

> A MIDI keyboard and the microphone: the notes of the page's MIDI input, and the microphone as an analyser.

## A MIDI keyboard

`useMidiInput` hears the page's MIDI input: every component that calls it hears the same devices, and connecting from one connects them all. Browsers ask for permission, so connect from a click, with `requestAccess` or with the ready-made button (`npx shadcn@latest add @audio-ui/midi-connect-control`).

Usage and API: [`useMidiInput`](/docs/hooks/use-midi-input).

## The microphone

`useMicrophone` taps the microphone into an `AnalyserNode` on the page's audio context. The signal is raw: echo cancellation, noise suppression and automatic gain are off, since they flatten a tuner or a meter. The analyser is never connected to the speakers.

Usage and API: [`useMicrophone`](/docs/hooks/use-microphone).