The Devinyliser
This investigation grew out of a letter that was published in HiFi News at the end of 2015, where Patrick Wallace points out that vinyl signals always come with a background of low- frequency noise due to pressing limitations and other causes; that some of this is vertical with respect to the stylus; and therefore appears out of phase and cannot be localised by the ears. He suggests it therefore is interpreted as 'surround sound' ambience on the recording. Douglas Self’s The Devinyliser is a device for removing this low frequency anti-phase material, suppressing rumble without attenuating wanted bass information. The idea is not a new one, but this implementation is.