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These actions illustrated the necessity to reform the German deposit system
Lehrbuch und Aufgabensammlung für Technische Fachschulen (Höhere Maschinenbauschulen usw
Room Acoustical Fields MEng. F. Lucka IndividuallyThis book presents the theory of room acoustical fields and revises the Mirror Source Methods for practical computational use, emphasizing the wave character of acoustical fields. The presented higher methods include the concepts of Mirror Point Sources and Corner sources which allow for an excellent approximation of complex room geometries and even equipped rooms. In contrast to classical description, this book extends the theory of sound fields
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