用分贝 meaning in English
db
Examples
- Modern life is noisy . we measure just how noisy it is in decibels ( db )
现代生活充斥着喧闹杂音。我们用分贝来计算音量。 - The ratio of output power from an amplifier system , to the input power . gain is normally measured in decibels
放大系统的输出功率与输入功率之比,增益通常用分贝表示。 - The level at some particular point is the gain or loss of power , expressed in decibels ( db ) between that point and some arbitrary reference point
某一特定点的电平是指该点和某一任意参考点之间的功率增益或损耗，用分贝表示。 - Again call the the ratio , namely the electric voltage of the enlarger s exportation signal with at the same time output s voice ratio for electric voltage , usually use the decibel number to mean . the equipments s letter the ratio is more our output of high enunciation is more little . by any large , letter the ratio is more big , and the elucidation is in the in the signal a the quantity for more smallly , voice returning putting is more high , otherwise contrary . letter the ratio should be generally not lower than 70 dbs , high the letter of the true box the ratio should attain 110 dbs are above
又称为讯噪比，即放大器的输出信号的电压与同时输出的噪声电压的比，常常用分贝数表示。设备的信噪比越高表明它产生的杂音越少。一般来说，信噪比越大，说明混在信号里的噪声越小，声音回放的音质量越高，否则相反。