ROOTLESSJAMESDSP · 48 KHZ · TWO DEVICE PROFILES

Sound,
in focus. RootlessJamesDSP profiles for KZ EDX Pro and Redmi 12

Name: HyperAudio
Author: Noushad M.

Purpose-built DSP chains for the KZ EDX Pro and Redmi 12 speaker. Download the core trio or the full library, verify files in your browser and compare chains live.

Explore profiles How it works

DDC VDCConvolution IRSProcessing EEL2

Designed & tuned by Noushad M. · Offline file verification · Device testing status disclosed

Signal chain

HyperAudio publishes two device profiles, and their deployment is not identical. Both core profiles run the three-file chain below. The KZ EDX Pro HD core uses a 4-channel true-stereo IRS with a tonal DDC. The Redmi 12 V6 core uses an identity DDC with a stereo IRS. The standalone PEQ setup for the Redmi 12 lives in the library.

Device profiles2KZ EDX Pro, Redmi 12

Files per chain3VDC, IRS, EEL2

IRS host rate48 kHzverify the running rate

Tonal stages1no duplicated EQ

SourceAny app audio

VDCIEM: tonal biquad bank. Speaker: identity

IRSIEM: 4-ch true stereo. Speaker: stereo FIR

EEL2 LiveprogEffects or limiter-only path

OutputIEM or speaker

One correction stage only. On the IEM the DDC and IRS are tuned as a pair, and on the Speaker all correction lives in the IRS. Never stack library files on a core set.

Speaker split. The standalone Liveprog PEQ in the library replaces the VDC and IRS chain, so do not load the VDC or IRS with it.

Choose a profile

IEM

KZ EDX Pro

Folder: iem/
Release: HD core
IRS: 4-ch, 2851 taps, 48 kHz
DDC: 14 biquad sections
Driver: 24 Ω, 112 dB/mW
EEL: Lookahead limiter

The IEM voicing is a labelled design choice, not a measurement-derived target.

Setting guide Technical report

Speaker

Redmi 12

Folder: speaker/
Release: V6 core
IRS: Stereo, 8192 taps, 48 kHz
DDC: Identity
EEL: Linked lookahead limiter

The V6 three-file core is the default export. The standalone PEQ setup described in the guide is kept in the library.

Setting guide V6 report

Quick start

Pick the right guide first. Both core profiles use the three-file chain. The Speaker guide covers the standalone PEQ alternative, which excludes the VDC and IRS.
Set the host to 48 kHz and verify the running rate. Set convolver preamp to 0 dB for the IEM chain.
Turn off other processing: extra EQ, bass enhancement and OEM sound effects.
Load in order: DDC (.vdc), then Convolver (.irs), then Liveprog (.eel).
Start at low volume and confirm the profile and processing mode.

speaker/core/
├── SPK_v6.vdc
├── SPK_v6.irs
└── SPK_v6.eel

iem/core/
├── EDX_HD.vdc
├── EDX_HD.irs
└── EDX_HD.eel

Response & safety

Hz (log) · dB absolute · 1/6-octave smoothed · measured from the hosted IRS

Output—

IRS—

Max gain—

Peak tap—

L1 norm—

Limiter ceiling—

Export

Impulse response (IRS) EEL2 script Viper DDC

Download assets

Experimental

The full profile library for both devices. Sets are ordered newest first, and each set lists its DDC, IRS and EEL files. Pair files only within one set. The core downloads above are unchanged.

Live compare

Experimental

Quality assurance

…

The hosted files are fetched and checked in your browser: IRS format, finite samples, symmetry, peak ≤ 0 dBFS, max gain < 0 dB, L1 ≤ 1.25, tail ≤ −80 dBFS; DDC stability; EEL structure and slider ranges.

Verifying…

IRS format …
Finite samples …
Channel symmetry …
Peak ≤ 0 dBFS …
Max gain < 0 dB …
L1 norm ≤ 1.25 …
Tail decayed …
DDC …
EEL structure …

Verification harness

Offline checks on both chains. Not app, ARM or device validation.

Ready.

Evidence and limits

Component	Offline / numerical	App or device	Listening
Speaker VDC	PASS identity	USER REPORTED	USER REPORTED
Speaker IRS	PASS	USER REPORTED	USER REPORTED
Speaker EEL	PARTIAL compile, ceiling, bypass; non-finite rerun pending	USER REPORTED	USER REPORTED
IEM VDC	PASS stable	—	—
IEM IRS	PASS	NOT RUN	NOT RUN
IEM EEL effects path	Prior v4 checks: effects, ceiling, bypass, non-finite	NOT RUN for current v5	NOT RUN
IEM EEL v5 mode selector	Source review only; VM retest pending	NOT RUN	NOT RUN

Evidence boundary. Offline checks use a source-built JamesDSP VM on x86_64. They are not native ARM, RootlessJamesDSP app, device or listening tests. Numerically qualified does not mean device validated.

Known limitations

Reproducibility. iem_build.py, generate_irs.py and the source inputs are not included, so the IRS cannot be regenerated from this repository alone.
Speaker IRS provenance. The measurement setup is not documented. Any microphone response in the source measurement is also in the filter.
IEM voicing. It has no measurement behind it and is a design choice.
Spatial processing. The IEM surround feature is crossfeed plus width, not HRTF virtualisation.
ARM. EEL tests ran on x86_64. The v5 processing-mode selector has not been VM- or device-tested.
Limiter scope. Sample-peak limiting is not true-peak limiting or driver-excursion protection.
Sample rate. The IRS assets are 48 kHz only. Another host rate changes timing and frequency behaviour.

Raw and target curves

Each correction is fitted against a target curve, in dB relative to 1 kHz. Both targets are custom, built offline, and not published standards. Listening results outrank the curves.

KZ EDX Pro raw response vs target — KZ EDX Pro. Harman-style shape pulled toward listening preference. Coupler artifacts are left out.

Redmi 12 speaker raw response vs target — Redmi 12 speaker. Follows the driver roll-off, partial fill of the 400 to 650 Hz notch.

Method and principles: Raw and target curves.

Trust broad shape over narrow detail, especially on a single-position speaker measurement.
Never correct an artifact such as a coupler resonance or a room effect.
Never boost where the device has no output. The speaker has almost nothing below 100 Hz.

Optional Add-ons

addons/ holds two optional impulse responses and three EasyEffects reference presets. See the add-on guide.

Level Matching Warning. The add-on IRS files are not level-matched to the project gates. Measured maximum gain from 20 Hz to 20 kHz: BBE SonicMax.irs +7.9 dB (left) and +9.8 dB (right); EFOtech MLV 01024 (True Stereo, 48kHz).irs +3.7 to +5.3 dB across its four channels. The project gate is 0 dB. The convolver loads one IRS at a time, so an add-on IRS replaces the tonal-correction IRS rather than adding to it. Lower the volume before trying one.

Phase & Clarity

BBE SonicMax & EFOtech

Optional impulse responses to replace the core IRS with hardware-accurate phase alignment or spatial crossfeed. Use instead of the core IRS, never alongside it.

Reference Presets

EasyEffects JSONs

Reference files for Night Listening, Concert Hall, and Gentle Dynamics. These cannot be loaded directly into RootlessJamesDSP; they are for manual parameter replication.

Documentation

Deployment guideLoad into RootlessJamesDSP

Chain: DDC → Convolver (IRS) → EEL2 → Output. Set the host sample rate to 48 kHz and load each file into its slot.

Tonal correction lives only in the IRS. Never load the same EQ in both the VDC and the convolver: it applies twice.

Evidence & limitationsWhat has and has not been verified

Checks ran offline (source-built JamesDSP VM on x86_64 and NumPy). Not yet run: the app, native convolver, ARM, null tests and listening tests. The IEM tuning has no measurement behind it and the speaker EEL NaN/inf test is pending a rerun.

The browser checks on this page are file checks, not RootlessJamesDSP runtime validation.

Repository docsGuides, reports and methodology

Read the repository documents here. Each one also links to its file on GitHub.

System reference VDC reference IRS functions EEL2 functions Methodology Test report IEM setup Speaker setup EDX report Redmi report Attribution

Integrity and licence

Verify downloads with sha256sum. Tap a row to copy its hash. Library hashes are listed in SHA256SUMS and on each card.

SpeakerRedmi 12 · V6 core

IEMKZ EDX Pro · HD core

Licence

EEL2 code · .eelMIT Audio artifacts and reports · .irs .vdcCC BY-SA 4.0

Presets derive from AutoEq-format data (jaakkopasanen/AutoEq, MIT) via RikudouGoku's database, corroborated by Speaker Ranking. EEL2 scripts target the VM in RootlessJamesDSP (ThePBone, Apache 2.0). No third-party code or raw measurements are redistributed. See ATTRIBUTION.md.

Repository layoutFolders and where things live

HyperAudio/
├── README.md · index.html · ATTRIBUTION.md · LICENSE*
├── iem/       core/, library/, guide, report
├── speaker/   core/, library/, guide, report
├── data/      assets.json, assets.meta.json, curves
├── tools/     build_assets.py
├── docs/       vdc_functions, irs_functions, eel_functions,
│               system_full, methodology, test_report
├── assets/     logo, banner, style.css, script.js, docs.js, enhance.js,
│               library.js, compare.js,
│               fonts, verification harness graphics
└── .github/workflows/ci.yml

Sound,in focus. RootlessJamesDSP profiles for KZ EDX Pro and Redmi 12