Dirk的手風琴調音器/Stimmgerät在德國的書“Das PC Tonstudio”中介紹了Horst Zander。這本書有七個部分。第四部分（Der PC als elektroakustischesMeßgerät）解釋了Dirk的手風琴調音器：

In the fourth volume of the PC Tonstudio, we get down to the nitty-gritty。What are ostensibly frequencies and signals can also be analyzed in detail。This volume offers profound insights into most of the relevant questions。Can voices and moods be identified, and if so – how can melodies be recognized?What methods of audio measurement technology exist?Which products can be used for these on a PC?How is PC-based measurement technology employed for the design and sound reinforcement of rooms, and where does audio analysis find concrete application?