Audio Tools-Db Sound & Audio 对比 Decibel calculator 的使用情况和统计数据
Track environmental noise around you with Audio Tools-dB Sound & Audio meter app with detailed visual analysis.
Levels of Noise in decibels (dB)
20 dB - Very quiet, almost feel nothing
40 dB - Quiet, like soft whispers
50 dB - Quiet office
60 dB - Ordinary indoor conversations
80 dB - Noisy, may hurt the nerve
90 dB - Very noisy, nerve damage
100 dB - Increased noise, hearing damage
120 dB - Unbearable
Features of Audio Tools-dB Sound & Audio
- Accurate measurements.
- Standard measurement range from 30 dBA up to 120 dBA
- Real time scale level chart
- Display Max, Mean and Average values with both nice and clear digital and analog layouts
- Display current, average and maximum values.
- Display peak frequency.
- Start / Stop / Save functionality.
- Indicates decibel by digital screen
- Display the current noise reference
- Display decibel by graph line
Premium Package :
1 Week : $4.99
1 Month: $9.99
Lifetime :$29.99
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The app offering is auto-renewable subscriptions
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Sound levels are usually expressed in a logarithmic scale called the decibels (dB). The decibels cannot be added or subtracted directly.
Each operation between decibel values requires to convert the sound level back to a linear scale using an antilog function.
The dB calculator app allows the direct addition or subtraction of dB levels. The app uses the following formula:
A + B = 10*LOG10(10^(A/10) + 10^(B/10))
For instance, 5dB + 5dB returns 8dB (3dB is added when doubling the sound level) or 1dB + 2dB = 4.5dB.
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Audio Tools-Db Sound & Audio VS. 
Decibel calculator一月 8, 2025