Advanced Ambient Noise Mixer - Online Rain, Wind & Cafe
Mix white noise, pink noise, rain, thunder, wind, and cafe sounds. Individual volume, save presets. Relax or focus. All client‑side.
UD5 Toolkit
Design your perfect soundscape. Mix rain, fire, coffee shop chatter, ocean waves, and more. Create custom blends for focus, sleep, or relaxation.
Mix white noise, pink noise, rain, thunder, wind, and cafe sounds. Individual volume, save presets. Relax or focus. All client‑side.
Pomodoro timer with built‑in lo‑fi music playlist (synthetic). Focus and rest cycles. No copyright music; generated tones.
Play a collection of retro 8‑bit synth pads and leads using your keyboard. Record sequences and export as WAV. Pure Web Audio API.
Play a simple monophonic synthesizer with your keyboard. Choose waveform, attack, decay, and filter. For music fun.
Process audio faster than real‑time with OfflineAudioContext. Apply filters and export the result. Dev tool.
Read the ambient atmospheric pressure in hPa using the Pressure Sensor API (if available). Real‑time graph.
Register a periodic background sync to fetch fresh data even when the tab is closed. Understand the API and limits.
Connect an audio source to an Analyzer Node and display frequency and time‑domain data. Learn Web Audio visualization.
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
Choose a base color and see its complementary, split‑complementary, triadic, and tetradic harmonies. Copy palettes. Local.
Load an audio file and see its spectrogram with frequency over time. Adjust resolution and color map. Discover hidden sounds.
Zoom through the electromagnetic spectrum from radio waves to gamma rays. See wavelength, frequency, and applications. Static educational page.
Enter text and generate the corresponding Morse code audio beeps. Adjust speed and tone. Great for learning and practicing CW. No download.
Play a sweep from 20Hz to 20kHz. Test your speakers and your hearing. Simple and effective. Web Audio API.
Paste text to see a live letter frequency bar chart. Helps break substitution ciphers. All local analysis.
Apply lowpass, highpass, and reverb to an audio source. See frequency response. Create your own guitar pedal. All local.
Register a periodic background sync with a minimum interval. See the registration state and tags. Keep content fresh.
Create experimental glitch noises by toggling virtual circuit bend points. No real electronics harmed. Fun noise toy.
Route your microphone input through a chain of virtual effects (distortion, reverb, delay) using Web Audio API.
Register a periodic background sync and see the status. Schedule content updates for your PWA. API demo.
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
Trigger different vibration patterns on mobile devices. Test if your phone supports haptic feedback. Simple demo.
Drop an audio file and instantly see its duration in seconds and formatted time. Read metadata without full playback.
Select color bands to decode a resistor's value, tolerance, and temperature coefficient. Essential for anyone working with electronics hardware.
Pick a method, URL, headers, and body, then send an HTTP request directly from your browser. Debug APIs easily.
Experiment with the experimental Prompt API and Summarization API right in your browser. See how the on‑device AI model responds. Requires Chrome with AI features enabled.
Change the viewport meta tag and see how a page would render at different device widths. Understand responsive basics.
Interactive piano showing typical vocal ranges from Bass to Soprano. Highlight your range. For choir members.
Use the Magnetometer API to build a digital compass. See magnetic field strength and heading in real time.
Write a pattern and test it against URLs instantly. See which groups match. Learn the modern alternative to regex for routing. Works entirely in the browser.