Howtosignalprocessing
- How does interaural time difference ITD and interaural level difference ILD enable you to localize sound?
- What does interaural level difference allow you to do?
- What does the term interaural level difference refer to?
- How do you calculate interaural time difference?
How does interaural time difference ITD and interaural level difference ILD enable you to localize sound?
The interaural time difference (or ITD) when concerning humans or animals, is the difference in arrival time of a sound between two ears. It is important in the localization of sounds, as it provides a cue to the direction or angle of the sound source from the head.
What does interaural level difference allow you to do?
The interaural level difference is the difference in loudness and frequency distribution between the two ears. As sound travels, its strength dissipates. For example, if you are very close to a loud sound, it will sound loud to you. But if you are some distance from the same loud sound, it will not be as loud.
What does the term interaural level difference refer to?
Interaural level difference refers to the fact that a sound coming from the right side of your body is more intense at your right ear than at your left ear, and vice versa for sounds from the left, because of the attenuation of the sound wave as it passes through your head.
How do you calculate interaural time difference?
Interaural Time Difference (ITD)
The time difference between the two ears will be the difference in the left and right distances divided by the speed of sound. Here's a plot of the ITD for our sound as a function of time: ITD = 1000*(tauR-tauL); clf plot(t,ITD); xlabel('Time (s)'); ylabel('ITD (msec)');
