การดู
3:05
Measuring sound levels
3:53
Sound Level Meter Type 2270 – Sound intensity mapping – Brüel & Kjær
2:34
SLM25TK Sound Level Meter with Data Logging Function Measure 30dB~130dB and CD Software
1:00
Digital Sound Level Meters Data store Wall hanging type Noise Decibel Monitoring Testers
2:13
Making a Noise Measurement with the Optimus Red Sound Level Meters
2:23
Experiment Sound level meter
17:19
Noise Pollution App | Sound Meter App MIT App Inventor | Sound Level | Noise Sensor MIT App Inventor
2:11
Assess sound levels with the REED R8070SD Data Logging Sound Level Meter
