INR for forensic audio investigation

CEDAR Cambridge INR impulse noise reduction

INR is an Impulse Noise Reduction module that was developed for the audio forensics community as a more powerful alternative to Declickle. it digs deeper into the signal to remove clicks and noise bursts that conventional declickers cannot.

Clicks and noise bursts

It addresses two closely related types of impulses, eliminating short bursts of noise (which are not impulses in the usual sense but cannot be addressed using any form of broadband noise reduction) as well as defined clicks.

Transient and harmonic modelling

If you are working with material that contains very fast, high energy transient events that you wish to retain, INR's transient modelling protects these during processing, retaining their energy even when heavy processing is applied. Similarly, the harmonic modelling allows INR to remove clicks and bursts accurately in the presence of harmonic signals such as music and strong tones.

If you're working with badly damaged material suffering from intransigent impulse noises, you need to try INR. It will eliminate problems that nothing else can.

Forensic overview