dB ni Paskalga qanday aylantirish mumkin?

p = p_ref × 10^(SPL/20), where p_ref = 20 μPa (= 2×10⁻⁵ Pa), the threshold of hearing.

dB SPL uchun mos yozuvlar bosimi nima?

Mos yozuvlar tovush bosimi 20 μPa (mikropaskal) yoki 2×10⁻⁵ Pa bo'lib, bu 1 kHz chastotada inson eshitishining taxminiy chegarasiga to'g'ri keladi.

A-og'irliklash o'lchangan tovush darajalarini inson eshitish sezgirligiga moslash uchun tuzatadi. U past ( 6 kHz) frequencies. dBA is the A-weighted unit. Because the correction is frequency-dependent, a single dB(A) value cannot be converted to sound pressure in Pa without knowing the frequency spectrum — this converter works with unweighted dB SPL only.

0 dB qanchalik baland?

0 dB SPL 20 μPa bosimiga to'g'ri keladi — bu inson eshitishining taxminiy chegarasi. Bu sukunat emas, balki ko'pchilik odamlar sezishi mumkin bo'lgan eng past tovushdir.

Og'riq chegarasi dB da qancha?

Og'riq chegarasi taxminan 130–140 dB SPL bo'lib, bu taxminan 63–200 Pa tovush bosimiga to'g'ri keladi.

Bepul muhandislik vositasi №216

Tovush darajasi konvertori

Convert between unweighted sound pressure level (dB SPL) and sound pressure (Pa). Enter a value in either unit and get an instant conversion. Note: A-weighted levels in dB(A) are not directly convertible to Pa.

SPL = 20·log₁₀(p/p₀)dB SPL ↔ PaUnweighted

Results

Sound Pressure

—

dB SPL

—

Sound Pressure

—

Ovoz bosimi darajasi

where p₀ = 20 μPa = 2 × 10⁻⁵ Pa (threshold of hearing)

A Note on dB(A)

This converter works with unweighted sound pressure levels (dB SPL). An A-weighted level, dB(A), applies a frequency-dependent correction curve that approximates human hearing sensitivity. Because the correction varies with frequency, a single dB(A) value cannot be converted to sound pressure in Pa without knowing the frequency spectrum of the sound. Do not enter dB(A) readings into this tool expecting an exact pressure value.

Keng tarqalgan tovush darajalari

Level (dB)	Pressure (Pa)	Misol
0	0.00002	Eshitish chegarasi
30	0.00063	Quiet room
60	0.02	Oddiy suhbat
85	0.36	Heavy traffic
94	1.0	1 Paskal mos yozuvlar nuqtasi
120	20.0	Pain threshold
140	200.0	Reaktiv dvigatel (yaqin masofada)