Measure sound loudness levels by using a microphone on your phone, laptop or desktop computer. Measure a true perceived loudness or use old SLP algorithm. Get exact ITU …

Use the sound meter to determine how loud it is around you. When using the online hearing test or online audiometer to check your hearing, the test results are more accurate the more quiet it …

A handy and easy-to-use app to measure the surrounding sound and noise in the decibel unit (dB) inside your browser. The app uses your device microphone to capture media and then …

Our Decibel Meter Online tool measures the surrounding noise levels in decibels (dB). Teachers can use our tool as a Classroom Noise Meter. Click on "Start Testing" button and allow …

線上分貝測量器，測量看看環境分貝有多大？ 免費的噪音檢測儀、噪音測試標準表. 此線上噪音分貝檢測非供交易、證明或公務用途，僅供家庭內個人自行使用，測出值僅供參考。 均能音量 …

A sample MySQL database with an integrated test suite, used to test your applications and database servers Resources

An online SQL database playground for testing, debugging and sharing SQL snippets.

2023年4月7日 · 在 MySQL 命令行客户端输入 SQL 语句 CREATE DATABASE test_db; 即可创建一个数据库，输入的 SQL 语句与执行结果如下。 “Query OK, 1 row affected (0.12 sec);”提示 …

dbTest 介绍 命令行数据库管理工具，目前支持oracle,mysql,vertica,sqlServer 软件架构 使用jdbc进行数据管理 安装教程

Find out the integrated loudness (LUFS) & true peak (dBTP) for any audio file up to 384kHz/32bit and 8 channels. Drag and drop WAV/FLAC file (s) anywhere on this page to start. Your file (s) …