# Improving Real-time COVID-19 Monitoring Through Smartphone Voice Analysis

> **NCT04582331** · — · COMPLETED · sponsor: **Sonde Health** · enrollment: 500 (actual)

## Conditions studied

- Covid19

## Interventions

- **OTHER:** Smartphone-based voice and self-reported symptom collection

## Key facts

- **NCT ID:** NCT04582331
- **Lead sponsor:** Sonde Health
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-09-10
- **Primary completion:** 2021-05-12
- **Final completion:** 2021-05-12
- **Target enrollment:** 500 (ACTUAL)
- **Last updated:** 2021-05-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04582331

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04582331, "Improving Real-time COVID-19 Monitoring Through Smartphone Voice Analysis". Retrieved via AI Analytics 2026-06-22 from https://api.ai-analytics.org/clinical/NCT04582331. Licensed CC0.

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