David Heinemeier HanssonandClaude Opus 5
a466dcc04f
Reported to suit the XPS 16 as well, so the tuning now matches both machines and the directory is named for the pair rather than the one model. Gating moves from the DMI product name to the product SKU, which is what Dell keys the Cirrus speaker firmware on -- 10280db9 for the XPS 14, 10280dba for the XPS 16 -- so it identifies the speaker hardware itself instead of a marketing name. SKUs are compared as whole values, not substrings, so this cannot widen to the rest of the XPS line the way a short product-name match would: product_family on these machines is "Dell Laptops". match_sku and match_dmi are now lists, letting one tuning name every model it covers. A plain string still works as a single entry. The measurements in tuning.conf were taken on the XPS 14 (0DB9). The XPS 16 is covered on report rather than measurement, and tuning.conf and the graph both say so, because the profile's bass lift and high-pass were fitted against one machine's excursion and distortion limits. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
40 lines
2.0 KiB
Plaintext
40 lines
2.0 KiB
Plaintext
## Dell XPS 14 / XPS 16 (2026) internal speakers.
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##
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## Thirteen biquads and a lookahead limiter, applied as a PipeWire filter-chain
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## in front of the internal speaker sink. The stock Linux path already loads
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## Dell's Cirrus smart-amplifier firmware; this adds the perceptual voicing the
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## Windows Waves layer provides and Linux does not.
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description="Dell XPS 14/16 (2026) speakers"
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## Matched on the DMI product SKU, which is what Dell keys the Cirrus speaker
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## firmware on -- 10280db9 for the XPS 14 and 10280dba for the XPS 16 -- so it
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## identifies the speaker hardware itself rather than a marketing name. Compared as
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## whole values, so this cannot widen to the rest of the XPS line.
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##
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## 0DB9 XPS 14 -- measured here, see below
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## 0DBA XPS 16 -- included on report that this profile suits it, not measured
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match_sku=("0DB9" "0DBA")
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## Unescaped dots: this is passed to awk as a string, where a backslash escape
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## would be consumed before the regex sees it.
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sink_pattern='^alsa_output.*sof_sdw.*HiFi__Speaker__sink$'
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## Provenance. Derived by measuring the response of the xps-clone EasyEffects
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## profile from https://github.com/spencerbull/xps-audio-linux (MIT) and fitting
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## a biquad chain to it. No upstream asset is redistributed: the convolution
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## impulse response is not carried, so this tuning has no binary blob and is
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## sample-rate agnostic.
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derived_from="xps-audio-linux xps-clone (MIT, spencerbull)"
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validated_by="dhh"
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validated_on="2026-07-24"
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## The measurements below were taken on the XPS 14 (0DB9). The XPS 16 (0DBA) is
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## covered on report rather than measurement; re-measure there before treating
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## these figures as describing it.
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validated_hardware="XPS 14 DA14260 (0DB9)"
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## Measured against that reference under a dense pink-weighted multitone of 104
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## bin-aligned tones. See docs/AUDIO-TUNING.md for how to reproduce these.
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magnitude_rms_db="1.24"
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bass_group_delay_swing_ms="13.2"
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limiter_headroom_db="1.6" ## worst-case peak on a hot master vs -1 dBFS
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dynamic_range_delta_lu="0.1"
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