本帖最后由 三炮台 于 16-3-16 21:54 编辑
发教程贴本人大力支持,但同时也希望楼主能严谨一些:
楼主文中所说:
“采用32bit浮点的混音精度,意味着电平范围一下子从144dB扩展到了666536dB,这样恐怖的数字意味着你基本上是不会过载的。。。。。。”
楼主这话 有严重问题,
比特率与动态dB量 并也不存这种递增“扩展”!
而且你还忽略掉了一个重要参数 那就是比特率提升后的“讯噪比”
16bit、24bit、32bit、32bit Float 这些数字信号 只要超过峰值 都存在过载!
32bit Float 也并不是比16bit 耐操,不容易过载。
请仔细阅读下帖:
While you prevent high possibility of clipping with 32-bit float, you have the same signal to noise ratio (SNR) as the 24-bit audio.
Max SNR = 6 x bit depth used during recording
So a 16-bit recording has a maximum SNR of 6 x 16= 96dB. Below are the maximum SNR of 24-bit audio and 32-bit float resolution:
Max SNR of 24-bit = 6 x 24 = 144dB
Max SNR of 32-bit float = 6 x 24 bits (removing those extra 8 bits) = 144dB.
Take note that recording at 32-bit float will result to large file sizes for your recording track which can be a downside if you have limited hard disk drive spaces. The file size is computed using this formula:
File size of your digital audio in bytes = [(sampling rate) x (bit depth) x (number of channels) x (seconds)] / 8
http://www.audiorecording.me/what-is-digital-audio-workstation-analog-audio-to-digital-conversion.html
http://www.audiorecording.me/32-bit-float-recording-bit-depth-vs-24-bit-complete-beginner-guide.html
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