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FCV Sentinels

FCV Sentinel delivers Impact Scores and trend data to monitor users’ respiratory conditions.

FCV Sentinel is a threat-agnostic early warning system, based on RAIsonance’s proprietary technology, Forced Cough Vocalization (FCV) analysis. This tool is designed to detect subtle changes that may be the result of a pathogen, chemical agent, or environmental toxin experienced by the user. These changes are reported as an FCV Impact Score, with higher numbers indicating little or no change. Lower numbers indicate notable differences that may warrant a health workup. For businesses and organizations, aggregate data is presented on interactive dashboards. Data can be customized to track readiness by group, location, region, etc.

The FCV Sentinel user interface is a mobile app, there are no sensors, hardware, or equipment installation requirements. While FCV Sentinel does not diagnose any conditions or distinguish between pathogens and chemical agents, it is designed to provide fast, biometric, early-warning signal for any user.


This unique biometric toolset supports the ongoing challenges of persons living with respiratory impairment and seeking improvement.

MyAdvocate is a set of AI-powered mobile applications designed to track respiratory wellness by analyzing a person’s Forced Cough Vocalization (FCV) – an intentional cough. To set up MyAdvocate, users cough into the app several times over the course of a day, creating a 3-dimensional matrix of dozens of features, together as unique as a person’s fingerprint. With this baseline in place, users can then cough again, and MyAdvocate compares their current cough to their baseline, and provides an FCV score.

For Long COVID sufferers, MyAdvocate tracks ongoing respiratory dysfunction. For smokers or vape users, MyAdvocate tracks the smoker’s journey away from their prior respiratory status as a smoker, providing an FCV Improvement Score to document their improvement over time. In development are versions of MyAdvocate for COPD, Asthma, SIPE and more.

Audible HealthDx

AudibleHealth Dx is an investigational diagnostic SaMD, designed to diagnose COVID-19 using only the sound of a person’s cough via a mobile app.

The device, called the AudibleHealth Dx, is designed to diagnose COVID-19 by analyzing the sound of a person’s forced cough vocalization using artificial intelligence. The user interface takes the form of a mobile app. Once the user downloads and registers the app, they cough 8 to 10 times into their mobile phone, and in about 2 minutes, after submitting a cough, they receive their test result in the app. The (SaMD) approach allows for fast and easy COVID-19 testing with no swabs, no lines, no waste, no expiration dates, and no waiting.

The device is designed so that results are also pushed to a comprehensive Patient Portal where users can learn more about the test, the science, and current public health recommendations regarding COVID-19. Thanks to a technical integration with the Association of Public Health Laboratories (, the platform is also designed to automatically send any positive results to local public health authorities in all 50 states and 4 U.S. territories.

In addition to the mobile application, the company has also designed a web-based, enterprise class, fully integrated testing solution platform called TestHub, designed for high-volume purchasers. Businesses, employers, universities, sports teams, organizations, and government agencies will be able to use TestHub to acquire any quantity of tests, if authorized by the FDA, and distribute those tests in any quantities to their users, either once or on a recurring basis, with just a few clicks.

Read more about the AudibleHealth Dx SaMD submission to the US Food and Drug Administration (FDA) for Emergency Use Authorization (EUA) here.>

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Biometric Soundpass

SoundPass is a personal "check engine light" providing new solutions for today’s unique challenges.

SoundPass is biometric self-check software that looks for changes in a person’s cough sound signature. Using artificial intelligence, it compares each user’s current cough to their previously established baseline, to identify any changes. It can be used every day – even multiple times per day with results available in under 2 minutes via an easy-to-use mobile app.

To set up the SoundPass mobile app, each person provides 6 forced cough sound recordings over the course of a day. From those recordings, SoundPass creates a personal baseline that is unique to each individual.

With their baseline in place, users can conduct a self-check at any time by coughing again into the app. SoundPass rapidly compares the current cough to that person’s baseline to identify any changes that may have taken place. Conditions that can result in a “Not Authenticated” message include voice fatigue or strain, exposure to pathogens, acute and chronic conditions, environmental and other noxious agents and toxins. SoundPass does not diagnose or identify the reason for the mismatch.

When no changes are detected, SoundPass provides users with an Authentication message.

Like the check engine light on a car, SoundPass cannot identify what has caused the change or diagnose any illnesses – only that a change has been observed.

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