From Patent Drawing To Reality
Assembling 5 Mic’s to a processor:
Assembling all the mic’s into one processor so that the processor can modify the signals based on the need and then mix into one output to relay into the other ear through bone conduction headphones.
- Published in Technology
Mixing audio signals from 5 different mic receivers
Mixing Audio signals from 5 mic’s:
I am placing the mic’s in 5 different angles so that they cover the sound signals from all 5 directions, left and right ear, left and right head curvature, one in the center back of the head.
Mix Sound signals after editing to adjust ITD:
All the 5 mic’s capture the sound and the sound signal is mixed into one audio source, once it is mixed into one audio source it becomes mono and it is difficult to adjust the sound based on the ITD and direction of the sound.
Mix Sound signals before editing to adjust ITD:
All these capture the sound signal and the sound signal will be modified based on the proprietary algorithm. Once the final signal is available it will be outputted into a single audio. Processor knows the source and direction of the sound, it can calculate the time difference, sound pressure and intensity for the same frequency from each of the audio signal. Hence I decided to adjust the sound signals and then mix into one for transmission through bone conduction.
- Published in Technology
Testing Interaural Time Delay
Interaural Time Delay:
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. If a signal arrives at the head from one side, the signal has further to travel to reach the far ear than the near ear. This pathlength difference results in a time difference between the sound’s arrivals at the ears, which is detected and aids the process of identifying the direction of sound source.
Calculating ITD using a mannequin head, But the results vary based on the obstruction object. So the values that are calculated using mannequin head might not be exact as a human tissue but we can estimate based on the angle of sound, direction and sound pressure.
- Published in Technology