Blog

Practical guides and tips on audio, video, health, games, and more.

2026-08-05

What Ikigai Really Means: the True Story of the Four-Circle Diagram

The four ikigai circles were drawn by a Spanish author and the word was swapped in later. What ikigai means in Japan and how to use the diagram.

2026-08-05

Online Tools for Business: What the Tembrica Team Builds

Tembrica is 750+ working tools in the browser: audio and video, documents, QR codes, diagnostics, calculators. Tell us about your task.

2026-07-29

Color Blindness: Types, Testing and Designing Around It

How the four types of color vision deficiency differ, what online tests can and cannot tell you, and design rules that keep interfaces readable.

2026-07-29

How to Test a Monitor: Dead Pixels, Backlight Bleed and Color

A checklist for testing a new or used display: stuck and dead pixels, backlight bleed, uniformity, color accuracy, refresh rate, ghosting and burn-in.

2026-07-29

Subtitle Formats Explained: SRT vs VTT vs ASS, and Burned-In

What separates SRT, WebVTT, ASS and SUB files, when to burn subtitles into the video, and how timing, encoding and line length affect readability.

2026-07-29

3D Printing Filament Guide: PLA vs PETG vs ABS and How Much You Need

Compare PLA, PETG, ABS, ASA, TPU and nylon by temperature, strength and difficulty — plus how to calculate filament length, weight and cost per print.

2026-07-29

How to Find the BPM and Key of Any Song

Count tempo by hand, learn what automatic detection gets wrong, use the Camelot wheel for harmonic mixing and spot tracks with no single key.

2026-07-29

HEIC, WebP, JPEG or PNG: Which Image Format to Use When

How the common image formats differ in compression, transparency and support — and which to pick for photos, graphics, logos, web pages and archiving.

2026-07-29

Tinnitus Explained: Causes, Pitch Matching and What Helps

What tinnitus is, why it is a symptom rather than a disease, how pitch and loudness are measured, which signs need a doctor and what helps.

2026-07-29

Typing Speed: What WPM Really Means and How to Improve It

How words per minute is calculated, what counts as fast, why accuracy beats raw speed, and the practice methods that actually raise your rate.

2026-07-28

Projector Setup Guide: Throw Distance, Lumens and Screen Size

Where to mount a projector, how many lumens you really need and what screen size fits your room, with the foot-lambert formula and real numbers.

2026-07-28

How to Read Resistor Color Codes: 4, 5 and 6-Band Guide

Read resistor color bands without guesswork: band order, multipliers, tolerance, temperature coefficient, plus E-series values and SMD codes.

2026-07-28

How to Reduce Video File Size Without Visible Quality Loss

Bitrate, codec, resolution and frame rate decide file size. Target bitrates, CRF values, and what to change first when a video is too large to send.

2026-07-28

Sample Rate and Bit Depth Explained: 44.1 kHz, 48 kHz, 24-bit

What sample rate and bit depth actually change, why 96 kHz rarely helps, how many dB a bit is worth, and which settings to record and export at.

2026-07-02

What Are Loops, Samples, Presets and DAWs? A Beginner's Music Glossary

Loops, samples, one-shots, presets, DAWs, VST, MIDI and 808s explained in plain language. Learn to read sample pack file names and start making music.