Form of distortion in which wave-trains of different audio frequencies travel with different group velocities, owing to the characteristics of the medium (e.g. a landline).
"I have just spent the last hour listening to the CD your company made from my Original version of "Jacques Brel is Alive and Well and Living in Paris" performed at the Village Gate in New York City in 1968. I am amazed !! You have captured the gritty tones of Mort Shuman and the bell like quality of Elly Stone's remarkable voice. Even the ..."