Active Noise Cancellation® by AMR/iFi now rolling out across the range
Eye Pattern_Ver.9 Active Noise Cancellation® by AMR/iFi is in-house technology developed to cut out noise in a very significant way in the audio field. It is now the bedrock of iFi signal/power products because…they need to address the issue of noise in both signal and power situations.
What is the Active Noise Cancellation circuit design?
Drawing from the military field (specifically the Thales Spectra radar cancellation system deployed in the French Dassault Rafale jet fighter), iFi adapted this technology to exclusively introduce the Active Noise Cancellation® (ANC®) audio power system. It is now a cornerstone of the ever-improving iFi USB audio technology, looking for new products to feature ANC® ，and ANC+®.
ANC2
An air defence radar is transmitting at a certain frequency; the signal is bouncing off the aircraft; a receiver on board the aircraft picks up the signal and a computer analyses its base frequency/modulations and an identical, out-of-phase signal is generated by an on board system to cancel out the enemy radar signal.
By generating a signal identical to the noise signal but in the exact opposite phase, it actively cancels all the incoming noise. ANC® is the perfect ‘antidote’ for power supply noise, the bane of USB audio.
ANC-m1
ANC® measured, noise drops by 100 times or 40dB in comparison to the Common Noise Filter. Sonically, the background and inner resolution to recordings is enhanced.
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