█ Dr. Jordan Design
Dr. Jordan Design · Acoustic Test Lab & Measurement Engineering Dresden

Acoustic Engineering Disciplines, Measurement Methods & Standards

This directory organizes our engineering work into 6 main groups and 28 technical sub-domains (C01 to C28). Each section links directly to the corresponding laboratory pages, interactive online simulators, and measurement reports.

Note on navigating the catalog:

We intentionally omitted long product lists on this page so you can first select the appropriate measurement method or standard (e.g., ISO 3382, DIN 45680, or IEC 60268-16). On the linked engineering pages, you will find our specific test setups, simulators, and pre-configured measurement packages.

Showing 28 of 28 sub-domains
M01 5 Sub-Domains

Room & Building Acoustics, Speech Intelligibility

Standard-compliant measurement, simulation, and planning per ISO 3382, DIN 18041, ISO 16283, and IEC 60268-16 (STI/STIPA).

C01 /raumakustik
Anwendungsgebiet & Norm

Room Acoustics (DIN EN ISO 3382 / DIN 18041)

Complete measurement packages, software modules (Akulap & WinAudioMLS), web-based planning tools (RAP), omnidirectional dodecahedron sources, measurement microphones, and on-site measurements for evaluating reverberation time (RT60), clarity (C50/C80), definition (D50), room modes, and acoustic quality per DIN 18041 and ISO 3382-3.

Relevant Standards
DIN EN ISO 3382 DIN 18041 DIN EN ISO 3382-3
Key Parameters
RT60 T20 / T30 C50 / C80 D50 STI
Related Lab Pages, Calculators & Comparisons 62 mapped catalog items
C04 /nachhallzeit
Messgröße & Verfahren

Reverberation Time Measurement (RT60 / T20 / T30 / EDT)

Hardware and software solutions as well as impulse and omnidirectional sound sources for determining frequency-dependent reverberation time (RT60, T20, T30, Early Decay Time EDT) and Schroeder energy decay curves in octave and 1/3-octave bands.

Relevant Standards
DIN EN ISO 3382-1 DIN EN ISO 3382-2 DIN 18041
Key Parameters
RT60 T20 T30 EDT Schröder-Plot
Related Lab Pages, Calculators & Comparisons 53 mapped catalog items
C05 /chirp
Messgröße & Verfahren

Chirp / Log-Sweep & MLS Correlation Measurement (ISO 18233)

Software packages, precision signal generators, 2-channel building acoustics modules, and matched measurement systems utilizing deterministic logarithmic sine sweeps (Chirp) or Maximum Length Sequences (MLS) to extract impulse responses and high sound insulation indices even under strong background noise.

Relevant Standards
DIN EN ISO 18233 DIN EN ISO 3382 DIN EN ISO 16283
Key Parameters
Log-Sweep / Chirp MLS SNR-Gewinn Impulsantwort h(t) THD-Trennung
Related Lab Pages, Calculators & Comparisons 35 mapped catalog items
C03 /sprachverstaendlichkeit
Anwendungsgebiet & Norm

Speech Intelligibility & Voice Alarm SAA/ENS (STI / STIPA – IEC 60268-16)

Specialized handheld analyzers (Bedrock SM50/SM90/AM100, NTi XL2/AL1), calibrated STIPA talkboxes, 10cm active point-source speakers, complete packages, software plugins, and C++ developer libraries for standard-compliant Speech Transmission Index (STI, STIPA, RASTI) measurements on voice alarm systems and open-plan offices.

Relevant Standards
DIN EN 60268-16 DIN VDE 0833-4 DIN EN 50849 DIN EN 54-16 DIN EN ISO 3382-3
Key Parameters
STI STIPA CIS MTF STI >= 0.50
Related Lab Pages, Calculators & Comparisons 33 mapped catalog items
C02 /bauakustik
Anwendungsgebiet & Norm

Building Acoustics & Sound Insulation (ISO 10140 / ISO 16283 / ISO 717 / DIN 4109)

Measurement systems (Airborne Sound Levels 1–3), vendor-independent evaluation software, standard tapping machines, impact sound test benches, high-power dodecahedrons, 700W building acoustics amplifiers, and engineering services for airborne and impact sound insulation (R'w, DnT,w, L'n,w) as well as sound power testing (ISO 3741/3744).

Relevant Standards
DIN EN ISO 16283 DIN EN ISO 10140 DIN EN ISO 717 DIN 4109 ISO 3741 / 3744
Key Parameters
R'w DnT,w L'n,w Lw (Schallleistung) 2-Kanal Chirp
Related Lab Pages, Calculators & Comparisons 31 mapped catalog items
M02 5 Sub-Domains

Immission Control, Noise Monitoring & Extreme Frequencies (Infra to Ultrasound)

Measurement and assessment of environmental and workplace noise (TA-Lärm, ASR A3.7), low-frequency hums (DIN 45680), infrasound, and ultrasound (VDI 3766).

C11 /schallpegel_ta_laerm
Anwendungsgebiet & Norm

Sound Level Measurement, Immission Control & TA-Lärm (incl. DIN 15905-5)

Standard-compliant sound level measurement systems (IEC 61672), long-term monitoring modules, environmental noise kits (wind turbines, heat pumps, neighborhood noise), and live event monitoring systems (DIN 15905-5) logging LAeq, LCeq, LCpeak, rating levels (LAFTeq), impulse penalties, and percentiles.

Relevant Standards
DIN EN 61672 TA Lärm DIN 45645 DIN 15905-5
Key Parameters
LAeq / LCeq LAFTeq LCpeak L10 / L90 / L95 Beurteilungspegel Lr
Related Lab Pages, Calculators & Comparisons 42 mapped catalog items
C08 /arbeitsschutz
Anwendungsgebiet & Norm

Occupational Safety & Workplace Noise (LärmVibrationsArbSchV / ASR A3.7)

Class 1 and Class 2 sound level meters, USB measurement microphone systems, ultrasonic workplace test setups (VDI 3766), room acoustics planning tools, and evaluation software for workplace hazard assessments and noise exposure logging (LEX,8h, LpC,peak) per LärmVibrationsArbSchV and ASR A3.7.

Relevant Standards
LärmVibrationsArbSchV ASR A3.7 TRLV Lärm DIN EN ISO 9612 VDI 3766
Key Parameters
LEX,8h LpC,peak Raumkategorie I–IV 80 / 85 dB(A)
Related Lab Pages, Calculators & Comparisons 18 mapped catalog items
C12 /din45680
Anwendungsgebiet & Norm

Low-Frequency Noise Immissions & Hum Analysis (DIN 45680)

Specialized software modules (DIN 45680:1997 and 2020 draft), WAV post-processing tools, low-frequency environmental measurement systems, and on-site engineering investigations for low-frequency noise immissions (1 Hz / 8 Hz to 100 Hz) caused by heat pumps, wind turbines, transformers, and HVAC systems.

Relevant Standards
DIN 45680 DIN 45680:1997 E DIN 45680:2020 TA Lärm
Key Parameters
8 Hz – 100 Hz LCeq - LAeq > 20 dB Hörschwelle Terzpegel
Related Lab Pages, Calculators & Comparisons 7 mapped catalog items
C13 /infraschall
Anwendungsgebiet & Norm

Infrasound Measurement Technology (< 20 Hz)

Ultra-low-frequency measurement systems, wide-band condenser microphones, DC-capable industrial DAQ interfaces (Data Translation), and on-site investigations for accurate acquisition of infrasound and sub-audible frequencies (from DC / 0.5 Hz / 1 Hz to 20 Hz), particularly near wind turbines.

Relevant Standards
DIN EN 61672 DIN 45680 ISO 7196 (G-Bewertung)
Key Parameters
0.5 Hz – 20 Hz G-Bewertung (dB(G)) Infraschall Windenergie
Related Lab Pages, Calculators & Comparisons 11 mapped catalog items
C14 /ultraschall
Anwendungsgebiet & Norm

Ultrasound Measurement Technology (> 20 kHz to 100 kHz / VDI 3766)

Turnkey ultrasonic measurement systems (up to 96 kHz analog bandwidth), wide-band 1/4" and 1/2" measurement microphone capsules (up to 40 kHz / 70 kHz / 100 kHz), high-sampling USB/IEPE interfaces (ATD-US, Data Translation, MTG MV240), and AU/U/US1 weighting filters (IEC 61012 / VDI 3766) for industrial plants and occupational safety.

Relevant Standards
VDI 3766 DIN EN 61012 LärmVibrationsArbSchV
Key Parameters
20 kHz – 100 kHz 192 kHz / 24-Bit dB(AU) 1/4" Kapsel
Related Lab Pages, Calculators & Comparisons 16 mapped catalog items
M03 3 Sub-Domains

Psychoacoustics, Sound Quality & Vibration Measurement

Human-perception loudness in Sone (ISO 532 / DIN 45631), sharpness, roughness, tonality (DIN 45681), and structural vibration analysis.

C09 /psychoakustik
Anwendungsgebiet & Norm

Psychoacoustics & Sound Quality (Sharpness, Roughness, Tonality)

Software modules, complete measurement kits, and Audio Precision APx plugins for human-perception-based sound quality evaluation: stationary and time-varying loudness, sharpness (DIN 45692), roughness, impulsiveness, tonality/tone penalty (DIN 45681), prominence ratio (ECMA-418-1), modulation analysis, and switch acoustics (GMW18141).

Relevant Standards
DIN 45631 DIN 45681 DIN 45692 ECMA-418-1 GMW18141
Key Parameters
Loudness (sone) Sharpness (acum) Roughness (asper) Tonhaltigkeit KT Prominence Ratio
Related Lab Pages, Calculators & Comparisons 21 mapped catalog items
C10 /lautheit
Messgröße & Verfahren

Loudness Measurement in Sone (Zwicker DIN 45631 / ISO 532 & EBU R128)

Dedicated measurement packages, ultra-low-noise microphone options (from 17–20 dB(A)), and software plugins for objective determination of perceived loudness in Sone (stationary per ISO 532B / DIN 45631 and time-varying per DIN 45631/A1) for quiet components (fans, IT, HVAC) as well as broadcast loudness per EBU R128.

Relevant Standards
DIN 45631 DIN 45631/A1 ISO 532-1 ISO 532B EBU R128
Key Parameters
N (soneGF / soneGD) N5 / Nmax 24 Bark (Critical Bands) LUFS
Related Lab Pages, Calculators & Comparisons 20 mapped catalog items
C24 /schwingungsmesstechnik_vibro
Anwendungsgebiet & Hardware

Vibration Measurement, Accelerometers & NVH (ISO 20816)

Digital piezoelectric USB accelerometers (Digiducer 333D01 incl. Akulap Vibro), combined Class-1 sound and vibration analyzers (Svantek SV977/SV979 per ISO 20816), shaker/order tracking analysis, bearing fault diagnostics, and multichannel IEPE vibration acquisition.

Relevant Standards
DIN ISO 20816 DIN 4150 ISO 5349 VDI 2057
Key Parameters
a (m/s²) v (mm/s RMS) IEPE / USB Order Tracking / NVH
Related Lab Pages, Calculators & Comparisons 12 mapped catalog items
M04 5 Sub-Domains

Measurement Hardware: Microphones, Analyzers & Sound Sources

Class 1/2 measurement microphones (USB, IEPE, P48), type-approved handheld sound level meters, dodecahedron sources, tapping machines, and fixed-gain DAQ interfaces.

C15 /messmikrofone
Hardware

Measurement Microphones, Capsules & USB Microphones (Class 1 & 2)

Precision measurement microphones (1/2" and 1/4") for 48V phantom power (XLR), ICP/IEPE constant current (BNC), and 200V polarization, as well as modular Plug & Play USB measurement microphones (ATD4-S, ATD5-T, Akulap Edition, MTG MV240, MiniDSP UMIK-1/2), 60UNS capsules, and ultra-low-noise microphones down to 6.5 dB(A).

Relevant Standards
DIN EN 61672-1 IEC 61094-4 Klasse 1 & Klasse 2
Key Parameters
1/2" & 1/4" 24-Bit USB / P48 / IEPE 6.5 dB(A) Low-Noise 170 dB max SPL
Related Lab Pages, Calculators & Comparisons 46 mapped catalog items
C16 /handschallpegelmesser
Hardware

Handheld Sound Level Meters & Portable Analyzers (Class 1 & 2 / PTB)

Standalone portable sound level meters and handheld acoustic analyzers for mobile field testing from Svantek (SV977, SV979 with PTB type approval), Norsonic (Nor103), Bedrock (SM30, SM50, SM90, AM100), NTi Audio (AL1, XL2), and lab-verified Class-2 meters.

Relevant Standards
DIN EN 61672-1 PTB Bauartzulassung DIN EN 60268-16
Key Parameters
Klasse 1 & 2 Eichfähig (PTB) STIPA / RT60 / Terz Autarker Feldbetrieb
Related Lab Pages, Calculators & Comparisons 19 mapped catalog items
C17 /schallquelle
Hardware

Calibrated Sound Sources, Dodecahedrons, Impulse Sources & Tapping Machines

Standard-compliant acoustic and mechanical excitation sources for room and building acoustics and speech intelligibility: omnidirectional dodecahedron speakers (Ntek, Lookline active/passive), calibrated STIPA talkboxes (Bedrock), acoustic clappers / FRI impulse sources, and standard tapping machines (ISO 10140-5).

Relevant Standards
DIN EN ISO 3382 DIN EN ISO 16283 DIN EN ISO 10140-5 DIN EN 60268-16
Key Parameters
Omnidirektional (360°) bis > 122 dB Lw Normhammerwerk STIPA Talkbox
Related Lab Pages, Calculators & Comparisons 25 mapped catalog items
C18 /lautsprecher
Hardware

Measurement Loudspeakers & Power Amplifiers for Acoustic Testing

Active and passive measurement loudspeakers (12-driver dodecahedrons, compact 10cm point-source speakers, mobile 113 dB active monitors, talkboxes) as well as silent fanless 19" analog power amplifiers and battery-powered 700W building acoustics amplifiers with wireless remote control.

Relevant Standards
DIN EN ISO 3382 DIN EN ISO 16283 DIN EN 60268-16
Key Parameters
700W RMS Bauakustik Lüfterlos (0 dB Eigenlärm) 10cm Punktschallquelle Rosa / Weißes Rauschen
Related Lab Pages, Calculators & Comparisons 22 mapped catalog items
C22 /audio_interfaces_vorverstaerker
Hardware

Measurement Interfaces, Preamplifiers & DAQ (ICP/IEPE, P48, USB)

Calibration-stable USB measurement interfaces without mechanical gain pots (ATD series for ICP/IEPE constant current and 48V phantom power), industrial multichannel DAQ frontends (Data Translation DT98xx), 1/2" measurement microphone preamplifiers (MTG MV210, BNC & XLR P48), low-noise preamps, and external ASIO soundcards.

Relevant Standards
ICP / IEPE (2–4 mA) 48V Phantom (IEC 61938) 24-Bit / 192 kHz
Key Parameters
Kalibrierfest (Fix-Gain) IEPE & P48 Speisung DC bis 96 kHz Multichannel DAQ
Related Lab Pages, Calculators & Comparisons 23 mapped catalog items
M05 4 Sub-Domains

Measurement Software, Electrical Audio Testing & SDKs

PC measurement systems (Akulap & WinAudioMLS), high-resolution signal generators up to 500 kHz, DSP filter design, and C++ libraries.

C06 /akulap
Software-Plattform

Akulap Measurement Software & Module Series

The modular PC measurement software Akulap (including Akulap LT, 64-bit extension, WAV post-processing, and USB measurement microphone with integrated hardware dongle) for standard-compliant measurements and automated test reports in room and building acoustics, immission control (TA-Lärm, DIN 45680), psychoacoustics, ultrasound, and vibration.

Relevant Standards
DIN EN ISO 3382 DIN EN ISO 16283 DIN 45680 DIN 45631 DIN EN 60268-16
Key Parameters
Modulare PC-Software WAV Post-Processing Automatische Prüfberichte 64-Bit / Multichannel
Related Lab Pages, Calculators & Comparisons 39 mapped catalog items
C07 /winaudiomls
Software-Plattform

WinAudioMLS Audio & Signal Analyzer

Proven PC-based audio and signal analysis software WinAudioMLS (Light, PRO, PRO EX, LAB), complete packages (including EDU systems), and all expansion plugins (#3000/#3100 series) for high-resolution FFT, sweep, harmonic distortion (THD/IMD), multichannel ASIO, and acoustic analysis.

Relevant Standards
IEC 61260 (Terz/Oktav) DIN 45631 DIN EN 60268-16 EBU R128
Key Parameters
FFT / MLS / Chirp bis 16 Kanäle ASIO THD+N / IMD 3D Wasserfalldiagramm
Related Lab Pages, Calculators & Comparisons 45 mapped catalog items
C23 /elektrische_audiomesstechnik_dsp
Anwendungsgebiet & Software

Electrical Audio Measurement, Signal Generators & DSP Analysis

Software packages, high-resolution signal generators (up to 500 kHz / IEC 60268-1), automated production tests (QA), and specialized plugins for electrical testing of amplifiers, tube amps, AD/DA converters, Windows mixers, phono preamps (RIAA), wow & flutter, AM/FM demodulation, digital IIR filters, and VST effects.

Relevant Standards
IEC 60268-1 BS EN 50332-1 RIAA EBU R128
Key Parameters
PCM bis 500 kHz / 32-Bit THD / IMD / SNR IIR Filter-Designer Wow & Flutter
Related Lab Pages, Calculators & Comparisons 40 mapped catalog items
C28 /lizenzen_treiber_entwicklung_info
Lizenzen, Entwicklung & Sonstiges

Software Licenses, Updates, SDKs/Drivers, Demo Gear & Technical Info

USB license dongles, software updates and hardware upgrades, custom Android app development, USB audio drivers and C++ libraries (STIPA SDK), verified demo/second-hand equipment, flat-rate repair services, and technical guides.

Relevant Standards
DIN EN 60268-16 (C++ SDK) USB Audio Class 2.0
Key Parameters
STI_LIB C++ SDK USB Dongle Software Updates Geprüfte Vorführgeräte
Related Lab Pages, Calculators & Comparisons 23 mapped catalog items
M06 6 Sub-Domains

Calibration Lab, APx555 Test Bench, Rental & Accessories

Traceable calibrations (ISO / DAkkS), Audio Precision APx555 contract and DIY test bench, pre-configured rental kits, on-site measurements, and cables/tripods.

C21 /kalibratoren_kalibrierservice
Kalibrierung & Qualitätssicherung

Sound Level Calibrators, Adapters & Calibration Lab (ISO / DAkkS)

Class 1 and Class 2 acoustic sound calibrators (Brüel & Kjær 4230/4231, Microtech Gefell 4010, Svantek SV30A, Norsonic 1251, Center 326/327, AWA multi-level, AZ8930, ND9), precision CNC calibration adapters for custom diameters (MM1, UMIK-1, Audix TM1, MicW, NTi, Bedrock), dummy capsules, and ISO 9001 / DAkkS calibrations.

Relevant Standards
DIN EN 60942 (Klasse 1 & 2) DIN EN 61672 ISO 9001 / DAkkS
Key Parameters
94.0 dB / 114.0 dB @ 1 kHz CNC-Adapter (1/2" & 1/4") 0° / 90° Frequenzgang NTI XL2 Kalibrierung
Related Lab Pages, Calculators & Comparisons 45 mapped catalog items
C20 /apx555
Labor, Kalibrierung & High-End Audio

Audio Precision APx555 Reference Lab & APx Software Plugins

Contract laboratory measurements, remote DIY test setups (via TeamViewer), and high-precision electrical/acoustic component calibrations using the Audio Precision APx555 reference analyzer, plus psychoacoustics software plugins for the APx framework (Sequence Mode).

Relevant Standards
Audio Precision APx555 DIN 45631/A1 (APx Plugin) IEC 61672
Key Parameters
-120 dB THD+N Referenz 2.0 MHz Bandbreite APx Sequence Mode Plugins Remote DIY Messplatz
Related Lab Pages, Calculators & Comparisons 14 mapped catalog items
C25 /vermietung_mietgeraete
Vertriebsmodell & Service

Rental & Weekly Hire of Acoustic Measurement Equipment

Flexible weekly rental of professional sound level meters (Svantek 979, NTi XL2/AL1, Bedrock), Class 1/2 measurement microphones, sound calibrators (B&K 4230/4231, Center 326, AWA), dodecahedrons, standard tapping machines, talkboxes, clappers, and complete room acoustics, environmental/wind turbine, and ultrasound measurement kits.

Relevant Standards
DIN EN ISO 3382 DIN 45680 DIN EN 60268-16 DIN EN ISO 16283
Key Parameters
Kalibrierte Komplettkoffer Wochenmiete / Versand Inkl. Kalibrierschein B2B & Privat (DIN 45680)
Related Lab Pages, Calculators & Comparisons 27 mapped catalog items
C26 /messdienstleistungen_vor_ort_labor
Vertriebsmodell & Service

Measurement Services (On-Site Engineering & Contract Lab Testing)

Nationwide on-site acoustic measurements performed by experienced engineers (open-plan offices per ISO 3382-3, building acoustics per DIN 140 / ISO 16283, event noise per DIN 15905-5, low-frequency hum/infrasound investigations) as well as ultra-low-noise and high-resolution contract testing in our in-house laboratory.

Relevant Standards
DIN EN ISO 3382-3 DIN EN ISO 16283 DIN 15905-5 DIN 45680
Key Parameters
Vor-Ort-Ingenieurservice Auftrags-Labormessung Prüfbericht & Gutachten Remote DIY Messplatz
Related Lab Pages, Calculators & Comparisons 8 mapped catalog items
C19 /kabel
Zubehör & Infrastruktur

Cables, Attenuators, Cable Protectors & Galvanic Isolation

Balanced microphone and audio cables (XLR male/female 2m–20m, XLR-to-TRS), 4-pole Speakon system cables for dodecahedrons, passive XLR inline attenuators (10/20/30 dB), galvanic USB isolators against ground loops, and 3D-printed USB-C cable strain-relief guards for UMIK-1/2.

Relevant Standards
IEC 60268-12 (XLR) USB Galvanic Isolation
Key Parameters
XLR 2m–20m Speakon 4-Pol -10/-20/-30 dB Pad USB-Isolator (Brummschleifenschutz)
Related Lab Pages, Calculators & Comparisons 10 mapped catalog items
C27 /stative_mechanik_zubehoer
Zubehör & Infrastruktur

Tripods, Rotating Booms, Windscreens & Mechanical Accessories

Tabletop, microphone, and heavy-duty dodecahedron tripods, automated rotating microphone booms (Ntek MB01) and turntable controllers (polar plots), foam windscreens (50mm/90mm), elastic shockmounts, mechanical capsule threads (1/4" to 1/2"), compression driver flanges, protective cases, CNC mounting brackets, and 9V batteries.

Relevant Standards
DIN EN ISO 3382 DIN EN ISO 16283
Key Parameters
Schwenkarm MB01 Dodekaeder-Stative Windschutz 50/90mm 1/4" auf 1/2" Gewinde
Related Lab Pages, Calculators & Comparisons 15 mapped catalog items

Direct Access to Product Catalog, Express Selection & B2B Quote Generator

Already know the required article number or looking for a specific calibration adapter, spare part, or rental unit? Use our express selection or generate an instant written PDF quote.

Open Express Selection (/direkt/) → Full Product Catalog (/alle-produkte/) → Product Categories (/categories/) → B2B Quote Generator (/angebot/) →