Adobe 22011292 User Guide - Page 238

224 CHAPTER 12 Options Menu - Edit View • A lower quality setting requires less processing time, but will result in certain high frequencies being "rolled-off ", leading to muffled-sounding audio. Because the filter's cutoff slope is much steeper at higher quality settings, the chance of ringing at high frequencies is greater. Usually values between 100 and 400 do a great job for most conversion needs. The default value is 120. You should use high quality settings whenever you downsample from a high sample rate to a low rate. When upsampling, a low quality setting will sound almost identical to a high quality setting. The difference lies in the larger phase shift that exists at higher frequencies, but since the phase shift is completely linear, it's very difficult to notice. Downsampling, at even the lowest quality setting, generally won't introduce any undesired noisy artifacts. Instead, it may just sound slightly muffled because of the increased high end filtering. • Post-Filter: To prevent any chance of aliasing, the post-filter on upsampling will remove all frequencies above the Nyquist limit, thus keeping them from generating false frequencies at the low end of the spectrum. In general, this box should be enabled for best results. Dither amount for saving 32-bit data to 16-bit files This option enables/disables dithering when pasting 32-bit audio to 16-bit. The default value of 1 (bit) will enable dithering, while a value of 0 will disable dithering. For semi-dithering, choose a value of 0.5. With dithering, you get almost 24-bit sample performance in only 16-bits, as the dynamic range is increased by another 10dB or so. This allows signals as quiet as -105dB. Allow for partially processed data after canceling effect This option decides what happens after you hit the Cancel button while in the middle of applying an effect to a waveform. • If the box is checked, Adobe Audition will leave the effect applied to all data processed up until the point you pressed Cancel. • Uncheck this box to have Adobe Audition automatically remove the effect on already processed data when Cancel is pushed. Multitrack Tab Use these settings to adjust system performance and default parameters for Adobe Audition's Multitrack View.