Can You Hear This?

How It Works

The tool plays a series of pure sine wave tones at increasing frequencies. After each tone, you indicate whether you heard it. Once you report not hearing a tone, the tool switches to a binary search between the last frequency you heard and the first you missed, narrowing down to within 500 Hz of your actual upper limit. The entire process typically takes 10-15 steps.

For the most accurate results, use quality headphones in a quiet room. Many speakers cannot reproduce frequencies above 12-15 kHz, which would artificially lower your result.

The Science of Hearing

The human ear converts sound waves into electrical signals via roughly 15,000 hair cells in each cochlea. These cells are arranged by frequency — high-frequency cells near the base, low-frequency cells near the apex. The high-frequency cells are the smallest and most susceptible to damage from noise exposure, aging, and ototoxic medications.

Age-related high-frequency hearing loss (presbycusis) is nearly universal. Studies show that the average upper frequency limit drops from around 20 kHz at birth to approximately 15-16 kHz by age 25, 12-14 kHz by age 50, and 8-12 kHz by age 65. Individual variation is significant and depends on genetics, noise exposure history, and overall health.

Sources

• Wikipedia - Hearing Range: overview of human audible frequency range and age-related changes
• Wikipedia - Presbycusis: age-related hearing loss, causes, and frequency range progression

Understanding Your Results

Your hearing test results show the highest frequency you can perceive at a comfortable volume level. This is a screening tool, not a clinical audiometric test. Frequency Range and Age: Healthy young adults (18–25) can typically hear frequencies up to 17,000–20,000 Hz. Hearing sensitivity naturally decreases with age, especially at higher frequencies — a process called presbycusis. By age 40, most people have difficulty hearing above 15,000 Hz. By age 60, the upper limit often drops to 10,000–12,000 Hz. Typical Results by Age Group: • Under 25: 16,000–20,000 Hz • 25–35: 14,000–17,000 Hz • 35–50: 11,000–15,000 Hz • 50–65: 8,000–12,000 Hz • Over 65: 6,000–10,000 Hz Noise-Induced Hearing Loss: If your result is significantly below the expected range for your age, it may indicate noise-induced hearing loss from prolonged exposure to loud sounds (concerts, headphones at high volume, power tools). This type of loss typically affects 4,000–6,000 Hz first — a characteristic 'noise notch' in audiometric testing. Limitations: This test depends on your headphones, device speakers, volume level, and ambient noise. Consumer audio equipment may not accurately reproduce frequencies above 16,000 Hz. For a definitive assessment, consult an audiologist who uses calibrated equipment in a sound-controlled booth.

Hearing Test Tips

• Use quality headphones in a quiet room for the most accurate results. Ambient noise masks high frequencies, making your results appear worse than your actual hearing ability. Over-ear headphones with good high-frequency response produce the most reliable readings. • Set your device volume to a moderate, comfortable level before starting — do not increase volume during the test. The test measures whether you can hear a frequency at normal listening volume, not whether it becomes audible at maximum volume. • Test each ear separately by removing one earbud or headphone cup. Hearing loss is often asymmetric — many people hear better in one ear, especially if they have occupational noise exposure predominantly on one side. • Take the test multiple times on different days. Temporary factors like ear wax buildup, sinus congestion, recent loud noise exposure, and fatigue can reduce high-frequency perception. A single test is a snapshot, not a definitive measure. • If your results consistently fall below expected levels for your age, schedule a professional hearing evaluation. Early detection of hearing loss allows for protective measures and, if needed, hearing aid fitting at a stage when they are most effective.

Practical Examples

Example 1 — Healthy 30-Year-Old Test result: Can hear up to 15,500 Hz Expected range for age 25–35: 14,000–17,000 Hz Assessment: Within normal range. No concerns. The slight decline from the teenage maximum of 18,000–20,000 Hz is completely normal age-related change. Example 2 — 45-Year-Old with Concert History Test result: Can hear up to 10,000 Hz Expected range for age 35–50: 11,000–15,000 Hz Assessment: Below expected range. The result may suggest noise-induced hearing loss, consistent with frequent exposure to loud music. Recommended: schedule a professional audiometric evaluation to assess the pattern of loss and discuss protective measures.

Methodology

The tool generates pure sine wave tones using the Web Audio API's OscillatorNode interface. Each tone is played for 1.5 seconds at the selected volume with a 30ms linear fade-in and fade-out envelope to prevent audible clicks.

The coarse phase tests 14 logarithmically-spaced frequencies from 1 kHz to 20 kHz. Once you report not hearing a tone, the tool enters a fine binary search phase, repeatedly halving the interval between your last heard frequency and the first missed frequency until precision reaches 500 Hz. This adaptive approach typically requires 10-15 steps total rather than testing every frequency individually.