FreqCheck™

Roga Instruments didn't build a reputation. They built a standard — the kind other manufacturers get measured against. For twenty years, as the authorized distributor for TEAC Europe GmbH and TEAC Instruments (Japan), Roga's hardware has carried compliance marks that most acoustic equipment never earns: DIN IEC 61094-4 for working standard microphones, IEC 60942 Class 1 for acoustic calibration, WS2F certification for infrasonic front-vented sensors. Their software processes sound power data against ISO 3741, ISO 3744, ISO 3745, and ISO 7779 — the same protocols governing reverberation chambers, anechoic rooms, and certified industrial testing environments worldwide. Their impedance tubes meet both ISO and ASTM material standards.

That kind of record doesn't come from a company that rounds up. It comes from the same instruments passing the same demanding checks for two decades, without exception.

That rigor has always lived on a bench, in a rack, behind a Windows machine. Until now.

Until this test, there was no documented instance of an Apple mobile device natively capturing, processing, and cryptographically sealing a clean 0.2 Hz signal.

Rogá drove sub-Hz telemetry directly through the iSV1611 into FreqCheck, on camera, with a function generator supplying a known, verifiable signal instead of an acoustic approximation.

The result is a mathematically indisputable demonstration that an iPhone can execute Class 1 metrology step-for-step against legacy bench systems — not an estimate of it, not a simulation of it, the same math, the same standard, the same result.

The video isn't the only record of this test. Every reading generated during the demonstration produced a sealed PDF report, timestamped and hashed the moment it was created.

That means the visual proof in the video and the underlying numerical proof in the report are two independent records of the same event, generated automatically, with no manual step in between where either could be altered.

Anyone reviewing this test isn't relying on a demonstration alone — they have the video and the certified data trail behind it, cross-referencing each other.

The same iSV1611 body that just proved itself down to 0.2 Hz of infrasound also functions as a digital charge amplifier for external accelerometers, connected through the Rogá K65 adapter.

One physical instrument now carries both an acoustic front end and a vibration front end, so switching between air and structure-borne measurement means changing an adapter, not changing your toolkit.

Field engineers no longer need to justify carrying, insuring, and maintaining two separate certified systems for two related disciplines.

Directly inside Instrumentation Settings, two dedicated master toggles redefine the iOS audio pipeline:

• Pro Input Mode (PIM): Completely disables iOS automatic gain control and digital noise gating. Grants full manual command over hardware routing (Left Ch 1, Right Ch 2, or Auto), physical unit scaling (dB SPL, m/s², dBFS), and sensor sensitivities.
• Wideband Metrology (30 Hz – 96 kHz): Unlocks the full acoustic and ultrasonic spectrum. Bridges continuous environmental logging with extreme peak-hold impulse detection for suppressors, firearms, and explosive air blasts.

Dual hardware presets let you switch instantly between sub-Hz infrasonic setups and 192 kHz high-SPL ballistic configurations without re-entering calibration factors.

Sample Rate, Locked to the Clock You Choose

PIM forces the iOS audio session to handshake with external hardware at strict, selectable clock rates — 44.1, 48.0, 96.0, or 192.0 kHz — while dynamic FFT bin resolution scales automatically. Whether measuring structural vibration in m/s² or peak sound pressure in dB SPL, calculations stay anchored to true NIST-traceable precision across any sensor array.

Manual Calibration, Entered by Hand

ADC voltage ceilings (10V / 16.6V), sensor sensitivity coefficients (e.g., 50.00 mV/Pa or mV/g), and acoustic offsets are entered directly. The live Metrology Configuration Snapshot verifies your exact signal path on screen, scaling field measurements to laboratory bench equipment down to the sub-Hz decimal.

YOUR FIELD DATA AND YOUR BENCH DATA ARE FINALLY THE SAME DATA.

Pro Input Mode is built to work with standard 1", 1/2", and 1/4" measurement microphones and accelerometers — the exact physical dimensions external accredited calibration bodies require before they'll issue a certificate against any instrument. Matching that established form factor means the hardware feeding FreqCheck isn't a proprietary workaround — it's the same physical standard every accredited lab sensor in the world is already built to.

FreqCheck is engineered to be a hardware-agnostic metrology bridge. While ROGA Instruments hardware establishes an accredited benchmark, Pro Input Mode (PIM) natively handshakes with class-compliant USB audio interfaces, external DAQs, or third-party ADCs.

Whether deploying an all-in-one USB microphone or routing an industrial multi-channel DAQ via USB-C into an iPad, the IND CORE™ engine processes acoustic and vibration telemetry with identical mathematical rigor.

Traditional acoustic workflows end in an exported CSV file — a format any downstream user can open and silently alter without leaving a trace. Every FreqCheck PDF is stamped with the exact metrology configuration (sample rate, ADC ceiling, sensitivity) and sealed with a SHA-256 hash. Because this prevents post-test tampering, FreqCheck is a fully qualified, ready-to-deploy data source for any enterprise Laboratory Information Management System (LIMS) or defense audit log. Field engineers capture the event, generate the sealed PDF, and ingest it directly with uncompromised metrological traceability.

FreqCheck runs the identical IND CORE™ analysis on a file already sitting on your device — a prior field recording, an archived legacy capture, audio pulled from existing case files — exactly as it does on a live signal coming through an external sensor.

That means the precision demonstrated live across these tests applies retroactively to recordings your organization already has sitting in storage, untouched for years.

Evidence you assumed was locked in an old file format, on an old drive, in an old case folder, can be re-opened and re-certified without a single new recording session.

Individual readings can be contributed to a cryptographically verified map of global signal data — turning a single measurement into part of an independently verifiable dataset that reinforces the credibility of your results.