# Microphone selector

A React component in [Beamline](https://beamline.io/)'s [Voice & audio](https://beamline.io/components/voice) category. Live demo: https://beamline.io/components/mic-selector

Choose the microphone, test it with a live level and mute it, with every permission and device state spelled out: not yet allowed, blocked (and how to unblock), no microphone, unplugged. Shares its microphone with the rest of the screen.

## Use it for

- Before recording, dictating or joining a call.
- Voice settings: input choice, a level test and mute.

## Not for

- Speaker or other output choice ([select](https://beamline.io/components/select)).
- The record control itself ([voice-button](https://beamline.io/components/voice-button)).
- A level display without choosing ([live-waveform](https://beamline.io/components/live-waveform)).

## Anatomy

- label
- device select (system default first)
- test button
- level preview (live-waveform)
- mute toggle
- state message (allow, blocked, no device) with the fix and a retry

## Variants

- **size**: sm, md, lg

## States

- permission not asked ("Allow microphone")
- asking
- allowed, idle (names listed)
- testing (live level)
- muted (level stops, says Muted)
- blocked (how to unblock, Try again)
- no microphone / unplugged (plug one in, Try again; the list refreshes on its own)
- unsupported or insecure page
- disabled

## Keyboard

- Tab: select, test, mute
- Select: Enter / Space / ↓ opens, arrows move, Enter chooses
- Test and Mute are toggle buttons (aria-pressed)

## Motion

The level preview runs only while testing and on screen; nothing runs otherwise.

## Props

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `microphone` | `Microphone` | — | Share one from useMicrophone() with a speech input or a call on the same screen; one is created otherwise. |
| `value / defaultValue / onValueChange` | `string` | — | Device id; "" is the system default. Used when no microphone is passed. |
| `muted / defaultMuted / onMutedChange` | `boolean` | — | Used when no microphone is passed. |
| `preview` | `boolean` | `true` | Show the Test button and level. |
| `label` | `string` | `"Microphone"` |  |
| `hideLabel / size / disabled` | `boolean / "sm" \| "md" \| "lg" / boolean` | — |  |
| `classNames` | `MicSelectorClassNames` | — |  |
| `style / ref` | `CSSProperties / native Ref` | — |  |

## Built from

- select
- [live-waveform](https://beamline.io/components/live-waveform)
- button
- tooltip
- alert

## Dependencies

`lucide-react`

## Import

```tsx
import { MicSelector } from "@/components/mic-selector/mic-selector";
```

## Get it

Microphone selector is part of Beamline: 190 React components and screens your coding agent (Claude Code, Codex, Cursor or any MCP client) installs into your app through Beamline's MCP server, as a ready-built package or as plain React source you can change. $49 one payment (regular $200), no subscription, a year of updates, one licence for your whole team. [Get Beamline](https://beamline.io/checkout?pack=complete) · [Connect your agent](https://beamline.io/connect)

## More in Voice & audio

- [Audio player](https://beamline.io/components/audio-player): One audio element and its controls: play with a loading state, a scrub bar with time, skip, speed and a playlist whose rows play into the same player…
- [Bar visualizer](https://beamline.io/components/bar-visualizer): A row of bars that says what a voice agent is doing: a sweep while connecting, the person's voice while listening, a slow breath while thinking, the…
- [Conversation bar](https://beamline.io/components/conversation-bar): The control bar of a voice call with an agent: one button to call and hang up, the agent's state as bars, a call timer, mute, and typing when talking is…
- [Live waveform](https://beamline.io/components/live-waveform): Loudness drawn as it happens: a scrolling history of the microphone (or any live source) or its spectrum, a calm processing state while words are…
- [Matrix](https://beamline.io/components/matrix): A dot-matrix display: animated frame sets (loading, pulse, wave, syncing), text and digits in a 5×7 font, or a VU meter of levels or a live source. One…
- [Orb](https://beamline.io/components/orb): The agent's presence: a thin ring of light around a lens in the brand's hue that holds still at rest, sends an arc round while thinking and widens with…
- [Scrub bar](https://beamline.io/components/scrub-bar): A seekable timeline for audio or video: elapsed and total time, what has loaded, chapter marks, a time preview under the pointer, and the full keyboard…
- [Speech input](https://beamline.io/components/speech-input): A text field you can speak into: the mic dictates through any speech-to-text provider, the phrase being heard shows apart from the finished words, and…
- [Transcript viewer](https://beamline.io/components/transcript-viewer): A recording and its words together: the spoken word lights up as it plays and the transcript follows it, any word or paragraph time plays from there…
- [Voice button](https://beamline.io/components/voice-button): The control that starts and stops talking: click to toggle or hold to talk (pointer, Space, Enter or a global shortcut), with a live level while…
- [Voice picker](https://beamline.io/components/voice-picker): Choose a text-to-speech voice from a searchable list (name, accent, tone, use) and hear it first: each voice has its own orb, previews play one at a time…
- [Waveform](https://beamline.io/components/waveform): The shape of a recording: one bar per slice of loudness, fitted to any width, with the played part in the accent, unmeasured slices hatched and a loading…