## Dell XPS 14 DA14260 internal speakers.
##
## Thirteen biquads and a lookahead limiter, applied as a PipeWire filter-chain
## in front of the internal speaker sink. The stock Linux path already loads
## Dell's Cirrus smart-amplifier firmware; this adds the perceptual voicing the
## Windows Waves layer provides and Linux does not.

description="Dell XPS 14 (2026) speakers"
## Matched on the DMI product name plus the presence of the sink below, which
## together are specific enough that no per-model predicate script is needed.
## Hardware needing a sharper test can set match_command to any predicate.
match_dmi="XPS 14 DA14260"
## Unescaped dots: this is passed to awk as a string, where a backslash escape
## would be consumed before the regex sees it.
sink_pattern='^alsa_output.*sof_sdw.*HiFi__Speaker__sink$'

## Provenance. Derived by measuring the response of the xps-clone EasyEffects
## profile from https://github.com/spencerbull/xps-audio-linux (MIT) and fitting
## a biquad chain to it. No upstream asset is redistributed: the convolution
## impulse response is not carried, so this tuning has no binary blob and is
## sample-rate agnostic.
derived_from="xps-audio-linux xps-clone (MIT, spencerbull)"
validated_by="dhh"
validated_on="2026-07-24"

## Measured against that reference under a dense pink-weighted multitone of 104
## bin-aligned tones. See docs/AUDIO-TUNING.md for how to reproduce these.
magnitude_rms_db="1.24"
bass_group_delay_swing_ms="13.2"
limiter_headroom_db="1.6"   ## worst-case peak on a hot master vs -1 dBFS
dynamic_range_delta_lu="0.1"