TTS from a mild noise condition was measured among three age groups: six young adults, ten 12‐yr and ten 7‐yr old children. All subjects were exposed during 12 min to a broad‐band noise at 96 dB SPL delivered through conventional dynamic earphones. TTS was obtained at 4 kHz in both ears 2, 15, and 30 min following the end of exposure. No difference could be observed between the TTS's from the 12‐yr group and the young adults. The 7‐yr children showed significantly less threshold shift than the older subjects, but on the other hand they appeared to recover more slowly than the latter. The difference obtained between amounts of TTS2were attributed to the poorer hearing sensitivity of the 7‐yr group at the tested frequency, as compared with the 12‐yr or the adult subjects.