Aexciter

Audio Single output Transform

Enhance high frequency part of audio.

FFmpeg filter: aexciter — the official reference.

Add it to a graph. The explicit form works for every filter — bind it to its input and read the result from outputs():

$node   = $audio->addFilter(new Aexciter(…));
$result = $node->outputs()[0];

Shorthand. Single-output filters can skip the node — apply() returns the result stream directly:

$result = $audio->apply(new Aexciter(…));

When to use it

TODO — when this filter shines: what it’s the right tool for, what to reach for instead when it isn’t, and how it composes with neighbouring filters.

How to use it

TODO — prose: how the filter actually works and what its key parameters mean (the explanation FFmpeg’s terse option help omits).

Examples

TODO — runnable PHP, with the equivalent ffmpeg CLI alongside.

Gotchas

TODO

See also

TODO

Parameters

Parameter	Type	Default	Range / values	Description
level_in	float	1	0–64	set level in
level_out	float	1	0–64	set level out
amount	float	1	0–64	set amount
drive	float	8.5	0.1–10	set harmonics
blend	float	0	-10–10	set blend harmonics
freq	float	7500	2000–12000	set scope
ceil	float	9999	9999–20000	set ceiling
listen	bool	false	—	enable listen mode

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Maps to FFmpeg’s aexciter filter. Verified against ffmpeg n7.1.1.