iPhone 6无加权分贝（dB）音量咨询及防喷罩对测量的影响疑问

Hey there, let's tackle your two questions about the iPhone 6's speaker volume measured in unweighted dB:

1. What's the unweighted dB volume of an iPhone 6? #

Apple doesn't publish official unweighted dB specs for the iPhone 6's speaker, but independent third-party tests give us a reliable range. In a controlled, quiet environment, measured at a standard distance of ~10cm from the speaker, the iPhone 6's maximum volume hits 90-95 unweighted dB.

Keep in mind that this can vary slightly based on factors like the specific unit (wear on the speaker over time), ambient background noise, and exact measurement setup.

2. Correcting measurements taken with a microphone windscreen (pop filter) #

Windscreens/pop filters are designed to reduce wind noise and plosive interference, but their impact on unweighted dB readings depends on the measurement distance:

• Close-range measurements (<15cm): The filter might dampen low-frequency (200Hz and below) sound by 1-3 dB. To get a more accurate real-world unweighted value, you can add 1-3 dB to your filtered measurement.
• Long-range measurements (>30cm): The filter's effect is negligible—your measured value is already close to the true unweighted dB output.

For the most precise result, if possible, re-run the measurement without the windscreen in the same environment. Different filter materials and designs can cause minor variations in how much they affect low frequencies.

内容的提问来源于stack exchange，提问作者J. Scott