AN14 – Preserving the Proper Phonographic EQ curve with Fractional or High Speed Re-mastering
There are circumstances in which half (or fractional) speed re-mastering of a record recording is necessary. Also, some situations require high speed dubbing. Examples of situations that require fractional speed re-mastering include warped records which cause skips when played at full speed. Also, you may have a turntable that only supports 33.3 and 45 rpm, but you want to transfer a 78 or 80 rpm record using it. Conversely, you may have a 16.6 rpm record but do not have a turntable that supports that speed. So, you can transfer it at 33.3 rpm and correct the speed using the “Change Speed” feature.