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White Noise - Sleep Aid (see description)
- 2022/06/05
- 再生時間： 3 分
- ポッドキャスト
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サマリー
あらすじ・解説
White Nooise for relaxing
Use with a maximum volume of 50db.
- How to measure the db?
Below is an indicative table:
0 dB- Hearing threshold.
10 dB- Calm breathing
20 dB- Library
30 dB- Light traffic
40 dB- Conversation
50 dB- Group of people ****
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60 dB- Vacuum
70 dB- Motorcycle
80 dB-train
90 dB- Heavy traffic
100 dB- Electric Drill
110 dB- Concert
120 dB- Aircraft engine
130 dB- Takeoff of an airplane
140 dB- Pain threshold
150 dB- Explosion
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