Channel EQ

The EQ of a mixer strip, simpler than the equalizer: a low shelf, a mid bell you sweep, a high shelf and a high-pass for the rumble. It is a device: a state, a panel, an engine and tools, each its own file.

Installation

bunnpmpnpmyarn
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pnpm dlx shadcn@latest add @audio-ui/channel-eq

Controls

Panel

The panel draws the curve of the four filters and the output level, with a handle on the mid band.

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import { ChannelEqPanel } from "@/components/audio-ui/devices/channel-eq/panel";
import { channelEqDevice } from "@/components/audio-ui/devices/channel-eq/device";

const [state, setState] = useState(() => channelEqDevice.defaults());

<ChannelEqPanel onValueChange={setState} value={state} />;

Engine

Create it, connect it and update it as for any device: see The engine.

Four filters in series and an output gain, the same the curve draws. With the high-pass off, it is a 10 Hz high-pass, which passes the whole spectrum, so the curve and the sound agree. channelEqBands(state) gives the filters.