According to architectural designers, although they are aware of the sound environment when designing spaces, in many cases visual (design) and cost (cost-effectiveness, etc.) were the predominant factors. In many cases, the visual (design) and cost aspects (cost-effectiveness, etc.) were dominant. The tacit rule for evaluating the sound environment was that a quiet space with no noise was somehow better. Futhermore, when space designers have meetings with clients, they are consulted that although they can present photographs, it is difficult to explain comfort other than visual elements. Even if they have attended classes on sound environment at university, it seems to be difficult for architectural designers who are not specialised in sound to concretely verbalise and articulate the image of the sound environment in their own consciousness. Therefore, the authors considered that, in order for architectural designers to design spaces with consideration for sound, it is important for them to make it their own thing, such as their own senses, to absorb knowledge before learning the knowledge of acoustics, and to show it objectively and clearly. Therefore in this study, two applications were developed: an application to raise architectural designers' awareness of the sound environment and a reverberation sensation training application. [For the full proceedings, see ED665357.]