Tone reversal | Article about tone reversal by The Free Dictionary
tone reversal[′tōn ri‚vər·səl]
Distortion of the recorder copy in facsimile which causes the various shades of black and white not to be in the proper order.
References in periodicals archive
This is the origin of the tone reversal
under "metatonie douce", which yielded a rising tone in Lithuanian but a falling tone in Latvian (cf.