Distortion in Pulse-Duration Modulation
Ernest R. Kretzmer · Proceedings of the IRE · 1947
Pulse-duration modulation inherently gives rise to a certain amount of audio distortion. The analysis presented in this paper relates the distortion to system parameters. The method of analysis is exact, and therefore correct for any degree of modulation. It does not, however, lend itself to periodic sampling. The results are applied to three specific cases.