Hearing Frequency & Age Test

Test Your Hearing Range

This tool is designed to test your Hearing Frequency Range, acting as a Hearing Age Test to help you understand the lowest and highest frequencies you can hear. This is an interactive hearing test tool based on the Web Audio API.

⚙️ Core Technical Principles

1. Web Audio API Frequency Generation This test uses the browser's native Web Audio API to generate pure sine wave audio.

• Precise Frequency Control: OscillatorNode is used to precisely generate any frequency within the 20Hz to 20,000Hz range.
• Real-time Adjustment: When dragging a slider, if audio is playing, the frequency follows changes in real-time without needing to restart playback.
• Logarithmic Scale Distribution: Use a logarithmic scale to provide finer control in the low-frequency range (20-200Hz), matching the human ear's sensitivity to frequency changes.

2. Dual-Slider Interactive Design

• Lowest Frequency Slider: Identify the lowest frequency you can hear (typically bass or rumbling sounds).
• Highest Frequency Slider: Identify the highest frequency you can hear (typically sharp, high-pitched sounds).
• Independent Playback Control: Each slider has its own play button; only one frequency can play at a time to avoid confusion.

🎧 Testing Method

Recommended Test Process For accurate results, please follow these steps:

1. Use Headphones: Headphones provide a more accurate frequency response and reduce environmental noise interference.
2. Adjust Volume: Start with the default 20% volume and adjust as needed. Warning: Do not use excessive volume!
3. Test Lowest Frequency:
   • Click the play button for the lowest frequency.
   • Slowly drag the slider to the right until you find the point where the sound just becomes audible.
   • Fine-tune back and forth to locate the exact threshold.
4. Test Highest Frequency:
   • Click the play button for the highest frequency.
   • Slowly drag the slider to the left until you find the point where the sound just becomes audible.
   • Fine-tune to find the exact upper limit.

📊 Hearing Range Reference

Normal Human Hearing

• Theoretical Range: 20 Hz - 20,000 Hz
• Typical Adult Range: 20 Hz - 16,000 Hz
• Common Music Range: 80 Hz - 15,000 Hz

Age Impact (Hearing Age Test) The human ear's sensitivity to high-frequency sounds typically declines with age:

• Children/Teens: Often hear up to 18,000 Hz or higher.
• 20-30 Years: Approximately 16,000 - 17,000 Hz.
• 30-40 Years: Approximately 15,000 - 16,000 Hz.
• 40-50 Years: Approximately 12,000 - 14,000 Hz.
• 50+ Years: Often below 12,000 Hz.

This natural decline is known as Presbycusis.

🖥️ Hardware & Environmental Limitations

This is a hardware and environment-dependent test; results may be influenced by:

1. Audio Equipment Quality

• Frequency Response: Not all headphones or speakers can accurately reproduce ultra-low (<40Hz) or ultra-high (>16kHz) frequencies.
• Wireless Earbuds: Some wireless devices use compression that may cut off extreme frequencies.
• Recommendation: Use high-quality wired headphones or monitoring headphones.

2. Ambient Noise

• Low-Frequency Masking: Background noise (like fans or AC) can drown out low-frequency test tones.
• Recommendation: Test in a quiet room.

3. Output Constraints

• Some hardware or system drivers may artificially limit the frequency range output.

⚠️ Safety Warning

Protect Your Hearing!

• Volume Control: Always start low and never push to painful levels.
• Avoid Listening Fatigue: Do not test at extreme frequencies for extended periods.
• Stop Immediately: If you experience ear pain, tinnitus, or discomfort, stop the test.
• Non-Medical Tool: This is for entertainment purposes only and does not replace a professional audiological exam.

For the most accurate results, use quality headphones in a quiet environment.