Early reflections calculator v2
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Is a MS Excel document calculating early reflections arriving within the first 80ms after the direct sound. The psychoacoustical model was much improved since the first version and involves interaural delays, reflection coloration, head shading and reflection amplification based on air and wall absorption. There's also a MS Word file hopefully useful for implementation into audio plugins or applications. You can use this model even with a sound editor but it will be very time-consuming and unpractical.

download Er calculator xls+doc v2.0