Sounds are inherent parts of cities. While any change occurs in an urban environment, it effects the sounds thus its soundscapes. Changes in urban soundscape with the industrial revolution in Central Anatolia (Ottoman Period) dated back to the construction of Bagdad Railway in 1894 and continued with the industrialization process after the declaration of the Republican regime. One of the leading cities got involved in this process was Eskisehir which is a Central Anatolian city, on the intersection of trade routes. Because of that location advantage, several factories had been built and had provided the impetus to change and form a new urban identity, spatial and social changes. In this study that aims to reveal the importance of industrial buildings that was built in the industrialization process of the city related to the soundscape of the urban past, evaluation of the past acoustic data in the context of urban identity was intended. Therefore, interviews were done with the factory workers of that period; people who lived in the vicinity of the factories and experts who studied the changes, as well as retrospective audio-video records and photographs were collected and analyzed. As a result, industrial soundscape of the urban past is concluded by defining soundscape components and important role of the industrial heritage in urban soundscape is revealed