stute.x1A Audio Analyzer

Precise electrical & acoustical measurement

Application samples

Optimize your loudspeaker box sound
Find the best speaker driver for your project
Check the audio Filter behavior
Test your impedance EQ-circuit (RC/RLC)
Verify the bass reflex port
Test your audio amplifier and TONE/EQUALIZER CONTROL 
Check the thiele small parameter (Vas, qts,...) of your driver
Analyze the signal distortion (k2..k7)
Steps

How It Works

Step 1

Hardware: Connect your USB audio interface to your PC. Prepare the small measuring adapter stute.x1S (free schematic).

Step 2

Software: Install and configure the stute.x1A Audio Analyzer software.

Step 3

Ready, start with your measurements.

Key features

Frequency range
Wide Frequency range up to 47kHz
Hardware
Usage of a standard USB audio interface (ASIO/WDM driver) 
Accurate
high repeat accuracy for electrical & acoustical measurement
User interface
User & touch-screen friendly Design. No overloaded screens.
Multi-Channel
Multi-channel measurement and powerful xy screen 
Microphone
Microphone correction included
Audio signal source
Audio signal generator included
SPL measurement
SPL correct acoustical measurement supported

Main screen

XY screen

measurement Example

Amplifier tone control

Check the frequency response of the amplifier or the tone control settings.

measurement Example

Acoustical frequency response 

Measure the frequency response of a single driver or from the complete loudspeaker box.

measurement Example

Audio crossover check

Verify the cutoff frequencies or the filter slope or display the driver impedance influence to the filter characteristic.

measurement Example

Driver impedance Z

Measure the impedance diagram of the driver to get the best input for the audio filter calculation. Also verify via this measurement type your impedance EQ circuit (RC / RLC) or the bass reflex tuning or...

measurement Example

Thiele Small Parameter

The Thiele Small driver parameter are essential for the driver enclosure calculation and important for the frequency response or step response. But often the T-S data are different to the data from vendor datasheets. This leads into a bad sound. Verify the parameter before you calculate the enclosure. Also possible: Control your driver burn in process via the parameter change.

measurement Example

FFT

Execute a FFT to display the spectrum of an electrical or acoustical signal. Measure signal distortions k2..k7.

Software

System requirements

PC with MS-Windows 7, 8, 10 (32 & 64 bit). Processor i3 1.5GHz or above, screen resolution min. 1024x768 pixel.



Audio interface with headphone output, stereo line input and microphone input.  Level of inputs and outputs adjustable. Supported driver ASIO and Windows WDM.  Sample rate 44.1kHz, 48kHz, 96kHz. Recommendation: Behringer UMC202HD. 


Microphone for acoustical measurement, like Behringer ECM 8000.

Simple interface for electrical / Z measurement (stute.x1S, see download page).


stute.x1A bundle

For your quick start!

The stute.x1A BUNDLE  includes the software stute.x1A, a high resolution USB audio interface, a measurement microphone with XLR cable and the stute.x1S PCBA adapter. 

stute.x1S INterface

Simple measurement interface

You need for the complete system adjustment and some electrical measurements the simple interface stute.x1S. For the construction by your own you get schematic for free at the download page. 


In our web shop you get the PCB, PCBA (PCB incl.components) or KIT (PCBA + case + front panels). PCBA and KIT are delivered as an assembly.