Ambient Sound Mixer - Online Rain, Fire & Coffee Shop
Mix multiple ambient sounds (rain, fireplace, cafe, forest) at different volumes. Create your perfect background noise. Local loops.
UD5 Toolkit
Customize your own soundscape with rain, wind, and cafe noises. Perfect for focus, relaxation, meditation, or drowning out distractions.
Soothing drizzle to heavy downpour
Gentle breeze or howling gusts
Background chatter and clinking cups
Mix multiple ambient sounds (rain, fireplace, cafe, forest) at different volumes. Create your perfect background noise. Local loops.
Read the ambient atmospheric pressure in hPa using the Pressure Sensor API (if available). Real‑time graph.
Connect an audio source to an Analyzer Node and display frequency and time‑domain data. Learn Web Audio visualization.
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.
Load an audio file and see its spectrogram with frequency over time. Adjust resolution and color map. Discover hidden sounds.
Pomodoro timer with built‑in lo‑fi music playlist (synthetic). Focus and rest cycles. No copyright music; generated tones.
Register a periodic background sync to fetch fresh data even when the tab is closed. Understand the API and limits.
Play a sweep from 20Hz to 20kHz. Test your speakers and your hearing. Simple and effective. Web Audio API.
Choose a base color and see its complementary, split‑complementary, triadic, and tetradic harmonies. Copy palettes. Local.
Zoom through the electromagnetic spectrum from radio waves to gamma rays. See wavelength, frequency, and applications. Static educational page.
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
Trigger different vibration patterns on mobile devices. Test if your phone supports haptic feedback. Simple demo.
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.
Enter text and generate the corresponding Morse code audio beeps. Adjust speed and tone. Great for learning and practicing CW. No download.
Create experimental glitch noises by toggling virtual circuit bend points. No real electronics harmed. Fun noise toy.
Register a periodic background sync with a minimum interval. See the registration state and tags. Keep content fresh.
Register a periodic background sync and see the status. Schedule content updates for your PWA. API demo.
Route your microphone input through a chain of virtual effects (distortion, reverb, delay) using Web Audio API.
Drop an audio file and instantly see its duration in seconds and formatted time. Read metadata without full playback.
Use the Magnetometer API to build a digital compass. See magnetic field strength and heading in real time.
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
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.
Interactive piano showing typical vocal ranges from Bass to Soprano. Highlight your range. For choir members.
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.
Select functional groups to see an approximate IR absorption spectrum. Learn spectroscopy visually. All local.