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简单来说,BIT越高音频的动态范围越大对于细节的表现力越好.更有利于去掉噪音.
但是,其实24BIT同32BIT之间的差距非常不容易听出来.24比有比16不少改善. 但是你又必须留意,如果听MP3或者你的声音解码芯片不支持,其实又变成无分别了.
Bit Depth refers to the number of bits you have to capture audio. The easiest way to envision this is as a series of levels, that audio energy can be sliced at any given moment in time. With 16 bit audio, there are 65,536 possible levels. With every bit of greater resolution, the number of levels double. By the time we get to 24 bit, we actually have 16,777,216 levels. Remember we are talking about a slice of audio frozen in a single moment of time.
Now lets add our friend Time into the picture. That's where we get into the Sample Rate.
The sample rate is the number of times your audio is measured (sampled) per second. So at the red book standard for CDs, the sample rate is 44.1 kHz or 44,100 slices every second. So what is the 96khz sample rate? You guessed it. It's 96,000 slices of audio sampled each second. |
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