Oyaide NRF-005L Noise Suppression Sheet

Basics

Oyaide Electric will release a new noise suppression sheet “NRF-005L” using PULSHUT® (highly functional non-woven fabric) developed by Asahi Kasei Corporation. Following the tape type “NRF-005T,” which has been well-received since its release in 2022, the new “A4 size sheet type” has been requested by many customers.

While NRF-005T is suitable for wrapping electric wires and attaching ICs and electronic components, NRF-005L is suitable for attaching to large areas such as inside and outside of chassis and around the base of audio equipment.

Once again, our emphasis is on avoiding “no fish in a clear water”. Audio accessories that claim to absorb noise must be carefully designed, or they may filter out the nuances and realism that should be present in music and video, and cause the music or video to lose its life.

The NRF series solves the dilemma of noise reduction and original sound fidelity, and offers a revolutionary and innovative product for all audiophiles.

Features

PULSHUT ® : 5 Important Features
High performance non-woven fabrics that do not contain any magnetic material.
Effective against noise in a wide frequency range from MHz to GHz bands.
Substrate is as thin as 0.05 mm and extremely lightweight.
Excellent flexibility and can be attached to uneven surfaces.
Both the sheet surface and the cut surface have high insulation properties, so it can be attached to conductive surfaces.

What is “PULSHUT®” ?

Conventional noise suppression materials have the property that the amount of noise suppression can be controlled by adjusting the magnetic material and the amount of magnetic material used. They have high magnetic loss characteristics and achieve their noise-absorbing effect by converting electromagnetic noise into heat. On the other hand, the impedance in certain frequency bands increases, which also affects the original sound waveform. This is similar to the properties of ferrite cores. This means that, as with EMC/EMI countermeasures, appropriate noise countermeasures were necessary for audio as well.

PULSHUT® is a highly functional non-woven fabric with a special surface treatment that provides high noise suppression performance despite its non-magnetic nature. This characteristic makes it possible to suppress only the noise component while minimising the effect on the original sound waveform.