Sonnox Restore is a collection of three plug-ins: Oxford DeBuzzer, Oxford DeClicker and Oxford DeNoiser, designed to accurately restore impaired audio recordings.

Developed over an exhaustive 18-month R&D program, Sonnox says that the Sonnox Restore suite represents "a quantum leap beyond previous restoration plug-in technology". Its advanced algorithms allow fast and effective removal of pops, clicks, crackles, scratches, hum, buzzes and extraneous background noise from virtually any recording. All three plug-ins provide detailed graphical feedback, and include novel features new to the restoration field, such as a specialized dialogue mode in the DeClicker.

Oxford DeClicker:

• Separate DePop, DeClick and DeCrackle sections.
• Each section has event detection indicator and activity density meter.
• Advanced algorithms for accurate detection and high quality repair.
• Intuitive display gives visual feedback of energy and duration of events.
• Exclude box to select events that should not be repaired.
• Excitation displays to aid accurate setting of threshold controls.
• Three audition modes including the option to listen to the detected events.
• Dialogue Mode with two separate control sets for speech and background.

Oxford DeBuzzer:

• High performance hum and buzz removal.
• Scalable high resolution FFT shows strongest harmonics and removal filter.
• Very accurate setting of fundamental over 3 frequency ranges.
• Integrating frequency display shows strength of fundamental.
• Tracking mode can be set to Automatic to follow fundamentals that wander in frequency, or Freeze for fundamentals that vary in amplitude.
• Choice of removal filters: Comb for narrow removal over many harmonics, or Parametric EQ for more musical removal over a small set of harmonics.
• Two audition modes, including the option to listen to the removed buzz.

Oxford DeNoiser:

• High quality noise removal using advanced algorithms.
• Separate DeHiss, Detect and Remove sections for intuitive workflow.
• High resolution FFT of input signal showing noise profile.
• Efficient DeHisser for preparation before wide-band noise reduction.
• Detector noise profile can be set to automatic, freeze or manual.
• Noise profile is controllable, including adjustable bias curve.
• Two audition modes, including the option to listen to the removed noise.
• Warmth control for sweetening after noise removal.