Editing Phonograph record (section)

===Noise reduction systems===
A similar scheme aiming at the high-end audiophile market, and achieving a noise reduction of about 20 to 25&nbsp;dB(A)<!-- for a maximum dynamic range of up to 100 dB -->, was the [[Telefunken]]/[[Nakamichi]] [[High-Com II]] [[Audio noise reduction|noise reduction]] system being adapted to vinyl in 1979. A decoder was commercially available<ref name="Nakamichi_High-Com_II" /> but only one demo record<ref name="Nakamichi_1979_NAK-100" /> is known to have been produced in this format.

The availability of encoded disks in any of these formats stopped in the mid-1980s.<ref name="Taylor_2017" />

Yet another noise reduction system for vinyl records was the [[UC compander system]] developed by {{lang|de|Zentrum Wissenschaft und Technik}} (ZWT) of {{ill|Rundfunk- und Fernmelde-Technik{{!}}''Kombinat Rundfunk und Fernsehen''|de|Rundfunk- und Fernmelde-Technik}} (RFT).<ref name="Hohmuth_1987" /> The system deliberately reduced disk noise by 10 to 12&nbsp;dB(A) only<ref name="Milde_1987"/> to remain virtually free of recognizable acoustical artifacts even when records were played back without an UC expander. In fact, the system was undocumented yet introduced into the market by several East-German record labels since 1983.<ref name="Milde_1987" /><ref name="Wonneberg_2000" /><ref name="Mueller_2018" /> Over 500 UC-encoded titles were produced<ref name="Wonneberg_2000" /> without an expander becoming available to the public. The only<ref name="Mueller_2018" /> UC expander was built into a turntable manufactured by {{lang|de|Phonotechnik Pirna/Zittau}}.<ref name="Seiffert_2013" />