![]() The analysis of an auditory scene depends upon the properties of binaural hearing that we have just described, as well as the frequency information that comes from different sound sources. In reality, we are constantly bombarded with multiple sound sources. On the other hand, it’s much harder for him to tell how far away it is. In this example, although the subject has his eyes closed, he is able to say that the loudspeaker is on the left. The brain uses these differences to determine the location of sound in space. This means that the sound arrives at each ear at a slightly different time and with different intensity. When a sound source is placed to the side, the sound wave, which decreases with distance, arrives at the exposed ear first (here, the left ear), before working its way around the head to the other ear (here, the right ear). ![]() When the same sound reaches the two ears at the same time (as when wearing headphones) the perceived loudness is greater (sound #2) than when it reaches only one ear (sounds #1 or 3). When both of our ears are stimulated, the difference between the intensity and the frequency at each ear, over time, has a major effect on sound perception: This is stereophonic hearing, which is very important, and we will come back to it when we talk about listening to music.īinaural hearing is essential for localizing sound sources. Timbre is the charcteristic, which allows us to differentiate between sounds of same pitch and loudness: everyone's voice, every music instruments has its specific and recognizable timbre (see ".Pitch is the sensation of fréquency: a sound is high or low.Loudness is the sensation of intensity: a sound is loud or weak,.Foundamental characteristics of the auditory sensation are: the loudness, the pitch and the timbre. ![]()
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