Developed entirely by the in-house engineering team, the design of Outline’s Warped Finite Impulse Response (WFIR) filters is now protected by a domestic patent in Italy (102018000003311) and is expected to soon enjoy the same status internationally. Having already been awarded patents for Newton, the company is justly proud of this latest acknowledgement

WFIR filters are one of the key features found in Outline’s Newton FPGA processor. ‘WFIR filters offer fundamental technical improvements over traditional FIR filters in that they operate on a semi-logarithmic scale, similar to the nature of human hearing,’ the company says. ‘This means that they are able to maintain high filtering resolution over the entire audio range, even in the case of increasingly high sampling frequencies.

‘WFIR technology also allows the use of raised cosine filters which provide a greatly enhanced level of accuracy in equalisation. They do require up to three times the computing power required for traditional FIR filters, which is not a problem with Newton’s onboard processing power, but in turn they provide up to ten times the resolution on mid-low frequencies. They are also not subject to the latency artefacts suffered by FIR filters.’

The technical performance and characteristics of WFIR filters can be demonstrated using an Audio Precision rig, and are highly regarded by their users in the field. ‘WFIR filters are something that need to be heard to be believed,’ says one, whose experience mirrors that of Newton users worldwide.

More: http://newton.outline.it