SpatDIF - SpatDIF

Acoustic Spaces Extension

Version 3 (Nils Peters, 04/04/2009 03:03 am)

 h1. Acoustic Spaces Extension
 describing properties of acoustic rooms, as needed by renderers who model spaces.
     * Room size
     * Room shape
     * Material/damping of walls
           o frequency dependent
           o Units: % Absorptions
           o diffusion
     * Environmental variables
           o Humidity
           o Temperature
 Nils  Peters
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+h2. Reviews
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+h3. Master thesis by Karin Münnich, chapter 3. p. 41 [1]
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+    * Room Presence: energy of the early reflections in percentage to direct sound
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+    * Envelopment:  energy of the late reverb in percentage to direct sound
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+    * Running Reverb: early decay rate of the late reverb
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+    * LateReverb: general decay rate of the late reverb
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+    * Heaviness: energy of the LF-component of the late reverb
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+      o Frequency: x-frequency between LF and Mids
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+    * Liveness: energy of the HF-component of the late reverb
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+      o Frequency: x-frequency between Mids and HF
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+The proposed parameter for a scene description format base mainly on the MPEG-4 specification [2], chapter 9.4.2.83.
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+h1. References
 Nils  Peters
 [1] Münnich, K. Untersuchung und Implementierung von Speicher- und Übertragungsformaten für Mischwerkzeuge der Klangfeldsynthese. Master’s thesis, 2003, Technische Universität Ilmenau.
-Nils  Peters
+[2] ISO/IEC. ISO/IEC 14496-1:2002. Information Technology - Coding of audiovisual objects - Part 1: Systems. 2002.