Time-Stretch & Pitch-Shift 

 
 

iZotope Radius is iZotope's offline time-stretching and pitch-shifting algorithm, designed for completely transparent operation on a wide variety of source material. Radius brings world class time-stretching and pitch-shifting to the selection based RX restoration platform, creating a powerful array of tools and algorithms for repairing audio.

 

 

Mode

Radius features two modes of operation, designed for completely transparent operation on a wide variety of source material.

Quality (Mix mode only)- Controls the algorithm's processing quality

 

Stretch Ratio - Determines how much the resulting audio will be stretched in time. Values from %0-100 will cause the audio to speed up without affecting pitch, resulting in a shorter audio file. Values %100-800 will cause the audio to slow down without affecting pitch, giving you a longer audio file.

 

Pitch Shift - Controls the amount of pitch shifting up or down that will be performed to the audio.

 

Extended Parameters ("More")

 

Shift Formants - Causes radius to also shift the formants of the selected audio with the controls below when processing. Formant frequencies do not change when the pitch of the voice or instrument changes. When Radius performs pitch-shifting without Formant Correction, it will shift these resonant frequencies along with the rest of the audio. This can lead to an unnatural change in the way the audio is perceived.