Room Tuning Made Simple—From Smartphone Apps to Dirac Live ART

Intro: Why Fixing the Room Still Beats Upgrading Gear

Even the best speakers can’t outrun bad acoustics. Bare floors, hard furniture and off‑axis reflections create peaks, nulls and smearing that no amplifier upgrade will cure. The good news? Modern DSP software can flatten bass modes, dial in phase alignment and apply a gentle “house curve,” all without stacks of fiberglass panels—or an engineering degree. This guide walks you through the easiest, most affordable paths to better sound, from phone‑only apps to the cutting‑edge Dirac Live Active Room Treatment (ART) rolling out later this year. (dirac.com)

TL;DR – If you can run a sweep tone from your phone, you can tune your room.

1. The Smartphone Fast‑Track

HouseCurve (iOS)

• All‑in‑one workflow. Launch HouseCurve, play its sweeping sine through AirPlay or Bluetooth and walk the mic around 5–9 seating positions. The app averages the captures, then auto‑generates either parametric EQ (PEQ) values or up to 65‑tap FIR filters compatible with Roon, miniDSP and CamillaDSP. (apps.apple.com, housecurve.com)

• Surprisingly accurate mics. Recent iPhone models measure ±1 dB from 20 Hz–16 kHz; plug in a $79 UMIK‑1 if you need full‑range precision. (apps.apple.com)

• Perfect WiiM partner. HouseCurve’s PEQ table drops directly into the four‑band filter slots inside the WiiM Home app (see §1.2).

Pro tip – Enable HouseCurve’s “Target Tilt” for a gentle –1 dB/octave downward slope; listeners tend to prefer a slight bass lift over ruler‑flat.

WiiM Auto Room EQ

• One‑tap sweep (iOS only, Android in late‑beta) measures with your phone mic, then uploads a PEQ profile to the WiiM streamer or amp. (forum.wiimhome.com)

• 2024 update added multi‑point averaging and tighter sub‑80 Hz & >16 kHz correction.

• Reality check. Limited to four filters and 48 kHz processing, but you’ll hear cleaner male vocals and tighter kick‑drum thump.

When the Phone Isn’t Enough

If you want deeper bass control, stereo/AVRs from Denon, Marantz, Anthem and others unlock more taps, phase linearisation and multi‑sub optimization—jump to §2 and §3.

2. Dirac Live ART: Next‑Gen, Whole‑Room Control

Dirac’s Active Room Treatment treats your entire speaker set as a coherent array. Instead of simply flattening each channel, ART manipulates inter‑speaker phase to cancel room modes and reduce decay time by up to 10 dB below 500 Hz. Early beta testers report “sub‑like” weight from stand‑mount monitors and faster bass decay times (≤300 ms) even in untreated living rooms. (dirac.com, audioxpress.com, dirac.com)

Availability – Denon & Marantz models that already support Dirac Live Bass Control should gain ART via firmware in H2 2025. Expect similar licencing for NAD and StormAudio soon after.

Setup at a Glance

1. USB mic (UMIK‑1 or Dirac Live‑certified) at 17 positions in a 2 × 2 m volume.

2. Target curve selection (start with Dirac’s “Recommended”). Adjust bass shelf after first listen.

3. Export to AVR; run Bass Control first if you use multiple subs.

CPU overhead? A single SHARC core at 96 kHz; most 2023‑era AVRs qualify.

3. Proven Mid‑Tier Alternatives

Audyssey MultEQ‑X (Windows, $199)

A pro‑grade PC app that unlocks unlimited filter taps, per‑channel target curves and phase editing on Denon/Marantz gear. Perfect if you want granular control but can’t justify Dirac’s licence. (audyssey.com, audyssey.com)

Anthem ARC Genesis (Win/Mac, Free)

Owners of Anthem, MartinLogan and Paradigm products get a surprisingly deep toolset—incl. per‑speaker max‑correction frequency and automatic phase alignment. Latest 1.6.x build refines phase correction for <80 Hz crossovers. (anthemarc.com, anthemarc.com)

REW + miniDSP

Zero‑cost Room EQ Wizard plus a $125–$300 miniDSP 2×4 HD or Flex opens true 64‑bit FIR convolution, dual‑sub integration and automatic delay calibration. Plan on 30 minutes of learning curve—but unmatched flexibility if you switch speakers often.

4. Which Path Fits You?

• “I just want a quick fix.” → WiiM Auto EQ (10 min).

• “I’m comfy with apps, run a 2‑channel rig.” → HouseCurve → PEQ or FIR export (20 min).

• “I own a modern AVR & want ‘wow’ bass.” → Dirac Live ART licence (45 min).

• “I like to tweak graphs.” → Audyssey MultEQ‑X or ARC Genesis (40 min).

• “I’m a DIY nerd.” → REW + miniDSP/CamillaDSP (as long as it takes!).

Remember: Digital correction is most effective after basic treatments—think rugs, curtains and bookshelves that break up early reflections.

5. Expert Implementation Tips

1. Use 5–7 mic positions for stereo, 9–17 for surround. Averaging avoids over‑fitting.

2. Target Curve – Aim for –1 dB/octave decline above 1 kHz or adopt Harman’s +4 dB bass shelf for a warmer balance.

3. Check decay time (RT60). Anything above 400 ms below 250 Hz will still sound boomy—add a bass trap or sofa before chasing more EQ.

4. Level‑match subs & tops to within 1 dB before correction; software can’t fix gain structure.

6. Frequently Asked Questions (SEO‑Ready)

Does Dirac Live ART replace acoustic panels?

No. ART reduces modal ringing but can’t tame flutter echoes or first‑reflection comb filters above ~500 Hz. Combine DSP with at least minimal absorption.

Can HouseCurve export directly to Roon?

Yes. Save the FIR file as a WAV, then upload it in Roon → DSP → Convolution. 48, 96 and 192 kHz files are supported.

Is WiiM room correction coming to Android?

A public beta is live in app v3.0.8 and should exit beta by Q4 2025. (forum.wiimhome.com)

Do I need a calibrated mic?

For casual tuning, modern iPhone mics measure ±1 dB up to 16 kHz. For formal work, a $79 UMIK‑1 gives full‑range accuracy.