การดู
1:00
Digital Sound Level Meters Data store Wall hanging type Noise Decibel Monitoring Testers
2:16
Decibel - Threshold Sound Meter (Noise Levels)
0:42
Best Sound Meter App? - Android
3:53
Sound Level Meter Type 2270 – Sound intensity mapping – Brüel & Kjær
6:07
Praat_Step 2_Sound Check and SPL Calibration
3:32
HOW LOUD IS LOUD: MEASURING DECIBELS (DBA vs DB etc)
5:20
Normalize vs Loudness Normalization in Audacity
1:25
Sound Mapping – Noise source identification and portable sound power assessment – Brüel & Kjær
