Audio Lab

Audio Lab

Professional Audio Analysis & Generation Suite

Noise Level Monitor

Real-time decibel measurement

0 dB Silent
Click Start to begin monitoring

Frequency Generator

Precision tone generation (20Hz - 20kHz)

440Hz
A4 • Concert Pitch
20Hz 1kHz 10kHz 20kHz
⚠️ Start at low volume to protect your hearing and equipment

Hearing Range Test

Test your hearing across frequency spectrum

📋 Test Instructions:
  • • Use headphones for best results
  • • Start at a comfortable low volume
  • • Click "I Hear It" if you detect the tone
  • • Click "I Don't Hear It" if silent
  • • Test includes 10 frequencies (20Hz - 17kHz)

Surround Sound Test

Test audio channels and speaker positioning

👤
You
📋 Test Instructions:
  • • Click any speaker icon to test that channel
  • • Listen for sound coming from that direction
  • • Use headphones or surround sound system
  • • Audio is panned to simulate speaker position
Click any speaker to test audio channels

Quick Sound Check & Browser Compatibility Test

Test if your browser and audio setup are working properly

Click the button below to run all tests

💡 Troubleshooting Tips:

  • • Make sure your volume is turned up and not muted
  • • Check that headphones or speakers are properly connected
  • • Some browsers need permission to access your microphone
  • • Try using Chrome, Firefox, or Edge for best compatibility
  • • Audio features don't work in private/incognito mode on some browsers

Complete Audio Lab Guide

Learn how to use each tool and get the most out of your audio testing experience

1

Noise Level Monitor

What it does: This tool listens to your surroundings and tells you how loud things are in decibels (dB). It's basically like having a professional sound meter right in your browser.

How to use it:

  • • Hit "Start Monitoring" and your browser will ask permission to use your mic
  • • Once you allow it, the circular meter starts showing live sound levels
  • • The number in the middle is your current decibel reading
  • • Those dancing bars at the bottom? They're showing different sound frequencies
  • • When you're done, just click "Stop"

When you'd actually use this:

  • • See if your room is quiet enough for recording podcasts or videos
  • • Figure out which appliance in your house is the noisiest
  • • Check if your workspace meets noise requirements
  • • Keep an eye on sound levels during parties or events
  • • Find out which rooms in your place are the quietest

💡 Quick tip: Anything under 40 dB is library-quiet (perfect for focus work). 40-60 dB is like normal talking. Once you hit 80 dB or higher, that's when you should worry about your ears if you're exposed to it for too long.

2

Frequency Generator

What it does: This lets you generate any tone you want, from super deep bass rumbles (20 Hz) to dog-whistle high pitches (20,000 Hz). You can even pick different waveforms to change how the sound... well, sounds.

How to use it:

  • • Drag the frequency slider around to pick what pitch you want
  • • Pick a waveform: Sine sounds pure and clean, Square is like old video games, Sawtooth is buzzy and harsh, Triangle is softer and warmer
  • • Set your volume - seriously, start LOW
  • • Those preset buttons (440Hz, 1kHz, 10kHz) are shortcuts to commonly used frequencies
  • • Hit "Play Tone" and you'll hear it instantly
  • • You can tweak the frequency and volume while it's playing
  • • "Stop" does exactly what you think

What you can do with this:

  • • Test if your speakers can actually play deep bass or super high sounds
  • • Tune your guitar or piano (440Hz is the standard "A" note)
  • • Figure out which frequency is causing that annoying feedback squeal
  • • Test your own hearing range at different frequencies
  • • Create reference tones if you're mixing audio
  • • Just mess around and see what different frequencies sound like

⚠️ Heads up: Please, PLEASE start with low volume. Some frequencies (especially the super high ones) can be really uncomfortable at loud volumes, and you could actually hurt your ears or blow out your speakers. Not joking!

3

Hearing Range Test

What it does: Ever wonder how good your hearing actually is? This test plays 10 different tones - from super low rumbles to crazy high pitches - and you just tell it what you can hear. Simple as that.

How to use it:

  • • Grab some headphones first (you'll get way better results)
  • • Make sure you're somewhere quiet - background noise will mess this up
  • • Click "Start Hearing Test" and it'll play the first tone
  • • If you hear something (even if it's super faint), click "I Hear It"
  • • If there's just silence, click "I Don't Hear It"
  • • The test moves through 10 frequencies automatically
  • • At the end, you'll see how many you got and what your hearing range is

What your score means:

  • • 9-10 heard: Damn, you've got excellent hearing!
  • • 7-8 heard: Pretty good! This is normal for most people
  • • 5-6 heard: Average - you're probably missing some of the extreme high or low stuff
  • • Below 5: Might want to check if your speakers are working, or maybe get your hearing checked

Why you'd want to try this:

  • • Just curious about your hearing? This is a fun way to find out
  • • Test it every few months to see if anything changes
  • • Compare with friends and family (younger people usually score higher)
  • • Check if your speakers or headphones can actually produce the full range
  • • Understand why some music sounds different to you than others

📊 Random fact: When you're young, you can hear from 20 Hz all the way up to 20,000 Hz. But as you get older, those super high frequencies start dropping off. Most people over 40 can't hear anything above 15,000 Hz anymore. It's just part of aging!

4

Surround Sound Test

What it does: Ever set up speakers and wonder "is my left speaker actually playing on the left?" This tool plays sounds from different directions so you can test if your audio setup is working properly.

How to use it:

  • • You'll see a little diagram with 5 speaker positions around you (that emoji in the middle is you)
  • • Click any speaker icon to hear sound from that direction
  • • The sound should feel like it's coming from where you clicked
  • • The active speaker lights up so you know which one you're testing
  • • Click "Stop All" whenever you want to stop the tone
  • • Go through each speaker one at a time to make sure everything's working

What the positions do:

  • • Center: This is where movie dialog comes from - straight ahead
  • • Front Left/Right: Your main speakers for music and action
  • • Rear Left/Right: Background ambience and surround effects

When this comes in handy:

  • • Just set up a home theater and want to make sure the speakers are positioned right
  • • One of your speakers sounds weird or quiet - figure out which one
  • • Testing headphones to make sure left and right aren't swapped
  • • Showing someone what surround sound actually means
  • • Trying to figure out why your audio sounds "off"

🎧 Using headphones? This totally works with headphones too! The sound gets panned left and right to fake the speaker positions. Front sounds feel more centered, while rear sounds are a bit quieter and more spread out. It's not perfect but you'll definitely feel the difference.

💡 Tips to Get Better Results

🎧 Your Gear

  • • Decent headphones or speakers make a huge difference
  • • Double-check everything's plugged in properly
  • • Make sure you didn't accidentally mute something
  • • Close Spotify, YouTube, or whatever else is playing

🔇 Your Space

  • • Find somewhere quiet - seriously, it matters
  • • Turn off that noisy fan or AC if you can
  • • Close the window if there's traffic outside
  • • Tell people around you to keep it down for a minute

⚠️ Don't Hurt Yourself

  • • Start quiet, then turn it up if you need to
  • • Give your ears a break if you're testing a lot
  • • If something hurts, stop immediately
  • • Cranking volume to max is never a good idea

🎯 Real Ways People Use This

At Home:

  • • Making sure your new home theater actually works right
  • • Checking if your room is quiet enough for Zoom calls
  • • Tuning your guitar without buying a separate tuner
  • • Testing headphones in the store before dropping cash on them
  • • Figuring out if the neighbors are actually too loud or if you're just sensitive

For Work:

  • • Setting up studio monitors so they sound right
  • • Making sure your recording space is quiet enough
  • • Testing sound systems after installation
  • • Quickly finding what's wrong when audio acts weird
  • • Creating tone references when mixing tracks

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