engleski

The Influence of the Sound Source to the Results of Objective Room Acoustics Quality Parameters Measurement

Objective parameters of the room acoustics quality are obtained from the impulse response, which is measured using the appropriate PC based acoustic measurement system with two types of loudspeakers (with known electroacoustic parameters) that emit excitation signal. Such measurement gives the impulse response that is the result of measurement of the entire system, which consists of the room and electro acoustics equipment, especially the loudspeaker. In order to investigate the real influence of loudspeakers on the measurement results, the research was made in which impulse response of the same, acoustically treated room, was measured with the same measuring microphone, and head and torso simulator. They were always on the same position in the room (measuring point). The loudspeakers were placed on different positions in the room, and oriented in different directions relative to the fixed measuring point. Obtained results show the influence of the sound source to the values of objective room acoustics quality parameters.

room acoustics; objective acoustics quality; impulse response; acoustic measurements; sound source

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