How oversampling distorts your sound скачать в хорошем качестве

How oversampling distorts your sound

Oversampling is used in many plugins to prevent aliasing, and it's often enabled by a button or a setting called the "high quality" mode. However, oversampling is not the perfect path to higher quality audio. Sample rate conversions in audio plugins cause three types of distortion that may cause trouble for your mixes, especially when you chain up several plugins that all do upsampling and downsampling. The three main problems caused by oversampling are: 1. delay - All antialiasing filters cause some delay. IIR filters do less delay; FIR filters can delay the signal significantly. 2. smearing - All filters cause time smearing; clicks that are short and crisp tend to get elongated into an s like sound as the filter settings get more extreme. Antialiasing filters are among the worst kind of filters for doing this because they tend to have extremely steep cutoff slopes. 3. ringing - filters often oscillate or "ring" after sharp transient sounds pass through. IIR antialiasing filters can be especially ringy at the nyquist frequency.