{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Microphone+device&page=2",
    "query": {
      "intervention": "Microphone device",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Microphone+device&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T14:35:58.934Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT04953390",
      "title": "Evaluating Benefits of Hearing Aid Microphone Directionality Technologies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hearing Loss"
      ],
      "interventions": [
        {
          "name": "Phonak Audeo hearing aid",
          "type": "DEVICE"
        },
        {
          "name": "Phonak hearing aid with multiple directionality settings, adjustable via a mobile app",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Sonova AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 19,
      "start_date": "2021-05-03",
      "completion_date": "2021-07-02",
      "has_results": true,
      "last_update_posted_date": "2022-11-09",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Aurora, Illinois",
      "locations": [
        {
          "city": "Aurora",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04953390"
    },
    {
      "nct_id": "NCT01974726",
      "title": "Gas Supply, Demand and Middle Ear Gas Balance -- Diagnosis of Eustachian Tube Dysfunction",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eustachian Tube Dysfunction"
      ],
      "interventions": [
        {
          "name": "ET Stress test",
          "type": "OTHER"
        },
        {
          "name": "Sonotubometry",
          "type": "OTHER"
        },
        {
          "name": "Forced Response Test (FRT)",
          "type": "OTHER"
        },
        {
          "name": "Inflation Deflation Test (IDT)",
          "type": "OTHER"
        },
        {
          "name": "Maneuver Sequence",
          "type": "OTHER"
        },
        {
          "name": "9-Step Test",
          "type": "OTHER"
        },
        {
          "name": "Tubomanometry",
          "type": "OTHER"
        },
        {
          "name": "Videoendoscopic assessment of ETF",
          "type": "OTHER"
        },
        {
          "name": "Pressure chamber ET test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "3 Years to 70 Years"
      },
      "enrollment_count": 95,
      "start_date": "2013-10",
      "completion_date": "2019-06-27",
      "has_results": false,
      "last_update_posted_date": "2020-10-08",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01974726"
    },
    {
      "nct_id": "NCT00438334",
      "title": "Real-World Benefit From Directional Hearing Aids",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hearing Loss"
      ],
      "interventions": [
        {
          "name": "Programmable directional/omni-directional hearing aid",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 105,
      "start_date": "2001-04",
      "completion_date": "2004-03",
      "has_results": false,
      "last_update_posted_date": "2016-11-22",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00438334"
    },
    {
      "nct_id": "NCT04873882",
      "title": "Waveform and Spectral Characteristics of Perioperative Wheezing",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Sounds",
        "Thoracic Surgery"
      ],
      "interventions": [
        {
          "name": "Acoustic ventilation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2019-12-16",
      "completion_date": "2021-08-27",
      "has_results": false,
      "last_update_posted_date": "2021-05-05",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04873882"
    },
    {
      "nct_id": "NCT05625191",
      "title": "Patients With and Without Phonotrauma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Phonotrauma"
      ],
      "interventions": [
        {
          "name": "Acoustic voice analysis",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "High-speed videoendoscopy",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 100,
      "start_date": "2023-01-17",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-11",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05625191"
    },
    {
      "nct_id": "NCT06564701",
      "title": "A Pediatric Comparison of Remote Microphone Technologies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hearing Loss"
      ],
      "interventions": [
        {
          "name": "Phonak Roger TouchScreen Microphone",
          "type": "DEVICE"
        },
        {
          "name": "Phonak Partner Mic",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Sonova AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "8 Years to 12 Years"
      },
      "enrollment_count": 25,
      "start_date": "2024-08-05",
      "completion_date": "2025-01-16",
      "has_results": false,
      "last_update_posted_date": "2025-03-13",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06564701"
    },
    {
      "nct_id": "NCT05304416",
      "title": "Clinical Markers of Dysphagia in Cardiac Surgical Patients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases",
        "Dysphagia"
      ],
      "interventions": [
        {
          "name": "Fiberoptic Endoscopic Evaluation of Swallowing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Simultaneous FEES and Videofluoroscopy instrumental swallowing exam",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Videofluoroscopy instrumental swallowing exam (VFSS)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Voluntary Cough Peak Expiratory Flow (PEF) Testing",
          "type": "OTHER"
        },
        {
          "name": "Reflex Cough Screen",
          "type": "OTHER"
        },
        {
          "name": "Lingual Pressure Testing",
          "type": "OTHER"
        },
        {
          "name": "Speech Testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 347,
      "start_date": "2022-06-07",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-06",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • Columbus, Ohio",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05304416"
    },
    {
      "nct_id": "NCT02729350",
      "title": "The Feasibility of the PAINReportIt Guided Relaxation Intervention-INPATIENT",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sickle Cell Disease",
        "Stress",
        "Pain"
      ],
      "interventions": [
        {
          "name": "Guided Relaxation video clip",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Sickle Cell Disease Experience Discussion",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2016-04",
      "completion_date": "2019-03",
      "has_results": false,
      "last_update_posted_date": "2025-10-28",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02729350"
    },
    {
      "nct_id": "NCT03243097",
      "title": "CROS Application in CI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hearing Loss"
      ],
      "interventions": [
        {
          "name": "Phase I - Standard Microphone Cros Input",
          "type": "DEVICE"
        },
        {
          "name": "Phase II - Automatic directional microphone Cros Input",
          "type": "DEVICE"
        },
        {
          "name": "Phase III - No Cros Input",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2017-08-24",
      "completion_date": "2021-03-26",
      "has_results": false,
      "last_update_posted_date": "2023-04-27",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03243097"
    },
    {
      "nct_id": "NCT03771287",
      "title": "Hearing Aid Noise Reduction in Pediatric Users (Oticon Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hearing Impairment",
        "Hearing Loss, Sensorineural"
      ],
      "interventions": [
        {
          "name": "Oticon OpenSound Navigator speech enhancement algorithm",
          "type": "DEVICE"
        },
        {
          "name": "Oticon omni-directional microphone algorithm",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "13 Years",
        "sex": "ALL",
        "summary": "6 Years to 13 Years"
      },
      "enrollment_count": 40,
      "start_date": "2018-12-05",
      "completion_date": "2020-08-30",
      "has_results": false,
      "last_update_posted_date": "2020-12-22",
      "last_synced_at": "2026-09-04T14:35:58.934Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03771287"
    }
  ]
}