# Immersive Two-Channel Recordings Based on Personalized BRIRs and Their Applications in Industry
## 6 Review of Industrial Applications
### Immersion as a Helpful Tool for Those Hard of Hearing  
Probably the most interesting usage of immersive sound is its integration in hearing aid devices. This represents a significant leap forward in auditory assistance, enhancing user experience through advanced sound processing and spatial audio rendering. According to [PERSON] [64], the future of hearing aids lies in their ability to provide superhuman auditory capabilities through advanced signal processing and immersive audio technologies. It is stated that both hearables and personal sound amplification products (PSAPs) which are widely used as hearing support devices, with the right improvements can serve people with mild to moderate loss of hearing. With the help of technologies such as machine learning or using neural networks, the same effect could be achieved; however, binaural rendering is less computationally complex and can be personalized to every individual.  
Another promising approach focuses on the role of virtual sound environments (VSEs), which play a huge part in increased acoustic realism in psychoacoustic listening tasks, rendering good results for both normal-hearing and hearing-impaired individuals [65]. Following this path, combining VSEs and individually generated BRIRs can give even better results tailored to each individual with a hearing aid device in specific room configurations.  
The concept of human-machine collaboration can also help new users integrate hearing aid devices seamlessly into their daily life as advanced wearable technologies [54]. Of course, in designing help devices such as hearing aids, the user's experience and needs should be the most important and taken into account in every way possible given the close collaboration between user and the device, that may stretch over decades. Especially, focusing on the complex situations people face every day, from crowded places to high-noise scenarios, focusing on the personalization of these devices in the immersion aspect can significantly change day-to-day experiences for HoH people. The immersive aspect provided by personalized BRIRs can significantly enhance these devices by offering more accurate spatial audio cues, thus improving speech understanding in complex acoustic environments and providing a richer, more engaging auditory experience. This can not only increase but ensure safety and help both old and new users perceive the world in the same way as everyone else. All the described possible applications which could make use of personalized BRIRs are shown in Figure 4.  
[PERSON] et al. [66] showed how to create a head-based haptic system that converts audio signals into haptic feedback. On the other hand, [PERSON] [67] focused solely on real-time system based on HRTF interpolation and its usage in multiple two-channel devices, hearing aids included. [PERSON] et al. [55] focused on the importance of auditory experiences in virtual environments, offering valuable insights for enhancing hearing aids. Implementing certain auditory technologies for dynamic sound adjustments and environmental adaptation in hearing aids can provide users with a more natural, responsive auditory experience, enhancing their ability to navigate diverse soundscapes.  
Figure 4: Personalized BRIR applications.