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.

One toggle in Instrumentation Settings — Pro Input Mode (PIM) — switches FreqCheck between two states:

• Off: Streamlined scanner. Point the mic, tap LIVE, get your reading.
• On: The signal-score screen becomes a live metrology panel. iOS audio filters and automatic gain control step aside completely, granting direct manual control over the variables that used to belong to bench equipment only.

Dual preset slots let you save two hardware configurations and recall them with one tap instead of re-entering values in the field.

Sample Rate, Locked to the Clock You Choose

PIM forces the iOS audio session to handshake with external hardware at strict, selectable rates — 44.1, 48.0, 96.0, or 192.0 kHz — while FFT bin resolution scales automatically. That means your calculations stay anchored to true NIST-traceable precision no matter which piece of hardware you connect.

Manual Calibration, Entered by Hand

ADC voltage ceilings, sensor sensitivity coefficients, and acoustic offsets are now yours to enter directly. That means your mobile readings scale to match laboratory bench equipment precisely, 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 — 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 microphone in the world is already built to. That compatibility is what lets a FreqCheck-based field setup move through the same accreditation and capital-equipment approval pathway as traditional rack-mounted systems, instead of requiring a separate justification.

FreqCheck is engineered to be a hardware-agnostic metrology bridge. While the Roga Instruments iSV1611 establishes the ultimate portable standard, Pro Input Mode (PIM) natively handshakes with any class-compliant USB audio interface, external DAQ system, or third-party analog-to-digital converter.

That means whether you are hot-swapping capsules on a handheld microphone, or routing a legacy multi-channel sensor array through a USB bridge into your iPad, the IND CORE™ engine processes the incoming telemetry with identical mathematical rigor.

You are not locked into a closed hardware ecosystem; your existing high-end sensors simply gain an immutable, LIMS-ready processing layer.

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). Field engineers capture the event, generate the sealed PDF, and ingest it directly into the LIMS database with perfect 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 the iSV1611.

That means the same sub-Hz precision demonstrated live in this video 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 larger, cryptographically verified map of global signal data — turning a single measurement into part of a growing, independently verifiable dataset that reinforces the credibility of your own results.