Evotune: Mastering Sound System Calibration

Evotune™️| Mastering Sound System Calibration

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For audiophiles and serious music lovers, sound isn’t just heard—it’s felt. However, the acoustics of your room can interfere with your equipment, no matter how expensive it is. That’s why Eversolo developed evotune, a next-generation calibration engine built to overcome these challenges.

What Does evotune Actually Do?

• Acoustic Scanning: This method records the whole acoustic fingerprint of your room using sweep and inverse sweep signals.
• Frequency Response Analysis: Creates detailed FR curves to show how sound behaves across a room.
• Intelligent Compensation: Produces FIR filters to rectify irregularities and enhance results
• Real-time calibration: Ensures consistent performance by dynamically adjusting to changes in the environment.
• Visual Tuning Interface: Calibration settings are straightforward to comprehend and adjust thanks to the graphical user interface.

How Does it All Work?

1. Bidirectional Acoustic Scanning
evotune uses forward and inverse sweep signals to simulate how sound reflects and travels through your room. It precisely captures direct sound, early reflections, and reverberation—creating an accurate acoustic model.

2. Ultra-Fast Frequency Domain Analysis
Powered by an efficient FFT framework and parallel processing, evotune completes high-resolution frequency analysis in just seconds—ideal for setups requiring quick recalibration.

3. Precision Window Function Filtering
The system applies the Blackman windowing algorithm to reduce spectral leakage and side-lobe interference, preserving sonic smoothness and detail—especially in sensitive mid-to-high frequencies.

4. Automatic Acoustic Defect Detection & Compensation
Common room issues like standing waves and frequency dips are automatically detected and corrected using directional FIR filters.

5. Adaptive Curve Generation
Smooth correction curves are generated via multi-band interpolation and constraint-based optimization—avoiding the stepped artifacts typical of traditional EQ.

6. Visualized Frequency Response Interface
With its real-time graphical UI, evotune lets users see both raw and compensated curves, making adjustments precise and intuitive.


7. Independent Multi-Channel Modeling
Each speaker channel is measured and calibrated independently to maintain spatial layering and immersive imaging—perfect for multi-channel theaters and monitoring setups.


8. High-Fidelity Audio Architecture
evotune supports high-resolution formats and integrates seamlessly with DACs, amplifiers, and active speakers—ensuring every nuance of your source is preserved.



Wondering about the benefits of evotune over traditional systems, use cases, the main technologies that underlie them, etc.?
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@Zidoo Support-Kim Hi Kim, could you please confirm if Evotune is in fact the Room Correction feature provided with the DMP series?

 

Hi there. Yes, the previous name for it was Room Correction.

 

If it really does all of that, it's impressive. Hat off.

 

When it only is a new, better sounding name perhaps for marketing and it is in reality the "Room Correction" we all have on our DMP`s since the last FW Update, then I can confirm that all you write about "Evotune" sounds very good,
but in reality it`s a gimmick and nothing more. "Evotune" tunes my room and my sound like I where in a small bathroom...under water.
My room, my ears, my music!
May be it will do the job as described for others...

 

To me, this seems like step in the direction of what Dirac does. If this correct? Is it to be made available in an upcoming firmware release? Where is the official user guide?
I am a bit confused about what this is and how to access and configure it.

 

It's already there in firmware v1.4.82, You can access it either on the device itself (or via Screen/Cast) in the main Apps section called Room Correction. Or via the control app through the button called Correction, top of the page on home screen if in Android and portrait mode. Evotune is just a fancy name but really very similar to what Wiim devices have. I have Dirac Live on another audio device and it is considerably more advanced but also more complex to use. You can try it out and just disable it if you don't like the result.

 

Question: how many of you are happy with measurements using iPhone?
I took two different ones, the first time the correction sounded good, the second one (more or less same parameters) sounded horrible (?).
I was thinking of buying the calibrated microphone for better results, but I'm afraid to enter the rabbit hole, start measuring all the time to get my money's worth, and forget to listen to music...

 

You get better results with a calibrated mic. I did so and bought me the Umic 1 from minidsp.
But I get the best results with REW and "inverted hand made" EQ Curves from this measurings to put into my RME Adi-2 Dac FS.

Funfact: Measuring with Eversolo just brings new/other curves every time but nothing in the room and/or equipment changed.
Bug or Feature? Who knows.

 

The microphone of a mobile phone is intended, and optimized, for GSM-quality speech; that is: far from being competent in all the spectrum 20Hz-20kHz...
Use a dedicated microphone, such as the UMIK-01.

 

I have some questions
1 will digital inputs be outputted with sound calibration ?
2 what audio formats can be corrected?
3 how many channels or only Stereo ?

(I have a 7.1.4 system )

 

1. For A8 and A10, the digital inputs take effect through analog output. A6 doesn't support it.
2. Generally PCM at 192 kHz or below.
3. Only Stereo.

 

So i'm gonna ask again: when will you (zidoo eversolo) start developing a true multichannel capable device?
Don't bother doing stuff the AVR/pre-pro already does. There is only missing a serious multi channel media player on the market.

 

Aren't the ZIDOO media players capable of doing that already...?

 

No! I keep repeating it over and over again.
All features on a eversolo or zidoo are for stereo.
Tagging, gapless playback , eq, replay gain.
There is no coherent behavior for multi-channel music. Not on a z3000 not on a dmp a6.

 

Ops...

 

How do I delete calibrations. I’ve got about 6 on my A6 gen 2 and only want to keep two

 

@Tedy please read this thread:

https://forum.zidoo.tv/index.php?threads/please-only-post-in-english-or-chinese.100463/

 

Hey, here are the info you may need:
1. Default EQ config cannot be delete, the new added configs can be deleted.
2. Disabling the FIR filter in EQ DSP will render room calibration ineffective.
Should you wish to clear data, navigate to Settings > General > Clear the laucher data or Factory reset.

 

But it doesn't work. Resetting the filters to factory settings introduces strange data. So I entered my own settings and it works remarkably well.