| 摘要 |
A method of determining acoustical characteristics of a room or venue having n sound ratios or sound sources is provided. A microphone having four omni-directional microphones are placed at ends of a tetrahedro-mounting unit, wherein the ends of the tetrahedro-mounting unit are equidistant to a middle point of the mounting unit. Impulse responses are detected for each of the n sound generators or sound sources by the four microphones of the microphone unit. The detected impulse responses are analyzed in view of direct sound components by determining a direction of the direct sound component, a delay and a frequency response. The detected impulse responses are analyzed in view of early reflection components by determining a direction of early reflections, a delay and a frequency response of each of the n early reflections. The detected impulse responses are analyzed in view of late reverberation components by determining a delay and frequency responses. Filtered parameters for a direct sound transmission function filter are calculated based on the determined direction, delay and frequency response of the direct sound components. Filter parameters for m early reflection transmission function filters are calculated based on the m determined directions, delays and frequency responses of the m early reflection components. Filter parameters for a late reverberation transmission function filter are calculated based on the delay and frequency response of the late reverberation components. |
