A preprocessing technique which enhances speech intelligibility in noise when the noise entersafterpreprocessing has been described recently [I. B. Thomas and R. J. Niederjohn, “The Intelligibility of Filtered‐Clipped Speech in Noise,” J. Audio Eng. Soc.18, 299–303, (1970)]. The preprocessing technique involves high‐pass filtering (cutoff 1100 Hz, slope 12 dB/oct) and infinite amplitude clipping. In the present experiments, we have determined the intelligibility of speech which has been passed through this same system but in which noise is addedpriorto filtering and clipping. Ten subjects took part; all signals were presented binaurally in phase through headphones. The noise signal was white noise, bandlimited from 250 to 6800 Hz. Intelligibility scores (percent) for Harvard PB words at signal‐to‐noise ratios of 0, 5, and 10 dB (measured at the microphone) were as follows: forunmodifiedspeech, 40, 65, and 80; forfiltered‐clippedspeech, 47, 82, and 96; forfiltered‐clipped‐differentiatedspeech, 47, 74, and 95. [Work supported by NIH.]