Conclusion

With all of the experiments performed on the dummy head, such as the binaural sound act, in which a bluetooth speaker to travel around the dummy head in order to determine the dummy head's effectiveness in terms of HRTF (Head Related Transfer Function). As a result, the front portion of the dummy head was less effective when compared to the sides and back of the dummy head because the silicon ears were positioned slightly outside the dummy head due to a lack of equipments as mentioned. A groove with a driller or any other equipment on the styrofoam would have helped the silicon to position accurately, which would have improved the HRTF of the dummy head that could have led the sound to be captured more on the front side of the dummy head.

The virtual barber shop was a fun project with the purpose of recreating the original virtual barber shop audio, however the replication was not as successful as the original owing to the lack of HRTF with the dummy head model.

Original virtual barber shop: https://www.youtube.com/watch?v=IUDTlvagjJA

The frequency test was excellent, and the findings were satisfactory, but owing to the lack of suitable flat response monitors such as PMC and Yamaha during the testing period, the curiosity about the right frequency response still remains.

To summarise this project, we can consider this dummy head to be version 1 and in the future, there is an intention to approach and explore building different versions of binaural dummy head microphones by increasing the budget to use more expensive and better materials than used now, in order to improve the HRTF, quality, and effectiveness of the dummy head microphone itself.

And this model can be useful as a reference for future build versions of dummy head microphones.