This paper proposed a time scaling expansion system to assist the basic level foreign language students in their learning process as well as to elderly people to understand the quickly uttered speech sentences. Computer simulations and real time experimental results show that the proposed system performs fairly well, providing a SNR larger than 27 dB, measured in the frequency domain, when the time scale of original signal is expanded up to 51%. That means that the distortion introduced in the time expanded signal is low enough for practical applications, as shown in the DMOS, larger than 3.5, obtained during subjective evaluations. The MOS evaluations carried out show that the proposed system allows an important intelligibility improvement as the expansion rate increase achieving a MOS larger than 4 for expansion rates larger than 40%. Other evaluations such as the DRT, which is larger than 90% also suggests that, the proposed system can be expected to perform well in assisting the students to improve the learning of foreign language, as well as to elderly people in the improvement of their audible capacity. These results agree with other previously proposed methods, with lower computational complexity. The proposed algorithm with some small modifications could also be used to compress the time scale of speech signals,although these applications are not considered in this paper. An analysis of the computational complexity of proposed systems together with several experimental results shows that, the proposed system is able to work in real-time without using all DSP capacities.