 Hi everybody, I'm Faruqshan, I'm the CEO of U-Sound and I'm CTA with Valeria, our head of product management. Hi everyone. So, we will talk about MEMSLAW speaker, the technology that we have developed at U-Sound. We have divided this presentation in four parts. First of all, we will introduce the technology behind the MEMSLAW speaker and we will explain why this technology will be as resurrected as the LED technology. Then we will show how MEMSLAW speaker can be used in Audi model for AR, VR glasses. Then we will use Fauna, our first P2C product that uses our MEMSLAW speaker. And last but not least, we will show how we have developed a bunch of applications that can be used for the makeup community. First of all, what are the advantages of MEMSLAW speaker compared to the traditional LED client? First of all, it's much thinner, so it can be used in very thin applications. It's much lighter, so it will save a lot of weight. In terms of acoustic, the MEMSLAW speaker has a very wide bandwidth that can cover IRS applications, so up to 80 keywords, but that can be driven even at higher frequency, even up to 80 keywords. And still covering the audio portion, so starting from 20 hertz up to 80 keywords. And what's probably the biggest advantage for an Audi industry that it's really looking for, IDG automatization is affected, so our loudspeaker can be sold on the floor. This one we can deliver in a tray or tapery and then we can place the loudspeaker on a PCB and then sold on the floor as a standard electronic component. Let's have a quick overview of the MEMSLAW technology and our MEMSLAW speaker. We start with an 18-inch refer where we have our MEMSLAW Twitter. Then the MEMSLAW Twitter is being picked and placed and flipped on a two-layer PCB. And then we place the cover in an acoustic membrane and then we have the loudspeaker. The main advantage of the MEMSLAW is that it's full automatization. We have 100% feasibility forward and backward, feasibility at component level. Every loudspeaker is 100% tested at electrical and acoustic level. We have already discussed the fact that MEMSLAW speakers are very thin, but right now we have a component of MEMSLAW speakers that have 1.6 mm thickness. In future, we will even have a female loudspeaker at 1 mm even below 1 mm thickness. The other advantage is the fact that we are not using permanent magnet and we are not using voice cord. So basically, the actuation is done using a piece of MEMSLAW. And the piece of MEMSLAW has a small SMD capacitor. So we have very low energy dissipation. There is no temperature increase. It's driven, the MEMSLAW is driven by voltage, not by current. It has a very low weight. And every very low weight means there are also very low vibration. Yeah, once again, the full stack. So we have a PCB, it's a standard to lay effort for PCB. We flip chip the MEMSLAW on the PCB. On the top, we have a sub-assembly that includes an acoustic membrane, a plate that adds stiffness to the system and a cover to protect the loudspeaker from external shock. Let's continue with the advantage of MEMSLAW speakers. So this chart showed the very good linearity that we have over full bandwidth. And in terms of SPL, so we have on y-axis is some pressure level SPL on the hex axis, the voltage, a set MEMSLAW speaker, not even full current and voltage. And the higher the voltage, the higher the sound pressure. And you can see here that it's almost a perfect linearity. But we have measured this a different frequency. It doesn't matter which frequency we are using. The linearity is always pretty good. And we have measured the linearity not just in a single component, but on several parts. And this slide showed that the part-to-part variation when it comes to linearity, voltage versus SPL is consistent on several parts and even between several patches. Now, let's continue our presentation, talk about the difference or the advantage of MEMSLAW speakers compared to balance sound and linearity. Let's start first in the comparison between MEMSLAW and versus balance sound. And here you can see on this slide our MEMSLAW speaker, especially you can see the green and red curve that are our two components compared to our balance sound. And you can see the bandwidth of the MEMSLAW speaker is much wider compared to all parts that we have benchmarked. So we can really cover, and this measurement is done with a so-called 711 coupler. And as you can see from 20 years up to 20 keywords, MEMSLAW speaker can cover full bandwidth with almost constant SPL. This is not the case for balance sound. And this slide we are talking about so-called SPL flatness or SPL response flatness. And again, we have defined and normalized at under 10 and 1 kHz SPL and then defined boundary at plus minus 60 B. And as you can see here, again, the MEMSLAW speaker in and red curve stayed perfectly in between the defined limit of plus minus 60 B around the normalized SPL from 20 years up to 20 kHz. And this is not the case for balance sound. And here we have summarized the bandwidth. And you can see with so-called up as plus minus 60 B point or up 10 B points that the bandwidth of MEMSLAW speaker is definitely superior to balance sound. It doesn't matter if it's a dual driver balance sound or a single balance sound. These tables summarize the comparison of MEMSLAW speaker versus a balance sound speaker. And as you can see, the comparison has been done against the single driver dual driver and two-way system balance sound. Overall, the MEMSLAW speaker perform well and over exceed the performance or outperforms the balance sound of the driver. In terms of SPL, in terms of SPL flatness, in terms of bandwidth with plus minus 60 B limits, then in terms of IRS audio performance, it allows speakers much better than balance sound. And also at THD, it's at the same level or better than balance sound. We are moving now our comparison in comparing MEMSLAW speaker versus MEMSLAW speaker. Again, we have our two MEMSLAW speakers. In this case, the curve of the red one and the blue one. All our curves are a little dynamic. I'll speak of that. We have useful MEMSLAW speakers. As you can see, the flatness of the sound pressure level of the MEMSLAW speaker is superior to the MEMSLAW speaker front. And this is again measured in a 711 coupler. So it's been included here application and from 10 up to 20 kilohertz. You can see MEMSLAW speaker. Okay, this table show the comparison between MEMSLAW speaker versus electronic loudspeaker in terms of SPL flatness. And as you can see, the SPL has been normalized at 94 dB SPL at 1 kilohertz. And then measurement we have done setting limit at plus minus 60B. And the MEMSLAW speaker remains flat within the boundary from 10 kilohertz up to 20 kilohertz. Meanwhile, electronic loudspeaker are exceeding the boundaries. So this slide show a comparison, acoustic comparison in terms of bandwidth of MEMSLAW versus electronic loudspeaker. And again, the upper lower limit fixed at 60B point compared to the SPL normalized at 1 kilohertz. And then with this normalization, the bandwidth was measured. And again, as you can see, the MEMSLAW speaker have a bandwidth of 12 kilohertz, but it's exceeding by far the bandwidth of any electronic loudspeaker that was measured in comparison with our MEMSLAW speaker. And in terms of acoustic overview, we can see in terms of SPL flatness bandwidth, IRS and THD MEMSLAW speaker out there. So I will leave the words to Valeria, but we will dive you through our product and application. Thank you. Welcome again. And here is the short overview of the products, which are possible to build with MEMSLAW speakers and one can see that it goes from a tiny in-ear headphones up to high-biological speakers. Before in this presentation, we were talking about the MEMSLAW speaker's characteristics of the MEMSLAW speaker. And the MEMSLAW speaker could be used also in a preview of applications like wearables or smart glasses. The next slide shows a typical SPL curve. And one could see the MEMSLAW speakers demonstrate the superior SPL behavior at the high frequency range, which makes this a great candidate for two-way systems. And now talking about the two-way systems, I would like to present our Danube-Alder module. It provides the great audio performance and has optimal mechanical dimensions. One can see we are reaching eight millimeters width, and it's a very nice dimension to be implemented in the audio classes. We use MEMSLAW tweeters and the electrodynamical woofer to reach the full bandwidth performance. And for driving this audio modules, we use external electronics. We call it Helica development board. And it provides a great eyewear development platform, which we will cover a little bit later in this presentation. Now I would like to welcome our founder, Alder Glasses. This is the first MEMS speaker-based audio glasses on the market. The idea behind was to develop an eyewear, which looks like eyewear and has no evidence of technology, but still having audio inside the temple. So we have four different models in two solutions with the blue light filter lenses and sun lenses to be used outside or inside. We choose a high-quality acetate for the frames, and this allowed us also to exchange the lenses to the prescriptions lenses. On this slide, there is a specification overview of our audio glasses. The bandwidth is 250 Hz to 20 kHz. The typical SPL at 1 kHz is 80 dB. The glasses could be used for phone call or play music. Also a voice assistant could be activated through the glasses. We use two microphones with a beamforming algorithm. And for the glasses control, there is a touch sensor in both temples. The glasses have a waterproof factor AP-52, and typical playtime is up to four hours. For the charging of the glasses, we use the charging case. One important feature to be mentioned is audio privacy. A temple is designed based on the Danube audio morning check, which has a special dipole configuration. So the sound is traveling towards the ear canal, and the leakage to outside is a minimal. This slide presents an overview of the activity measurements done by U-Sound. We have compared BOSER Huawei and Fauna glasses. The Huawei data and the chart in the middle shows only direction performance, meaning there is no beamforming for optimized privacy performance. Fauna and BOSER glasses do exhibit a beamforming behavior as one can see some irregularity on the shapes. And if one compare the Fauna and the BOSER charts, one could recognize that Fauna has a much better performance, which demonstrates more sound cancellation in the horizontal plane. Coming to the end of our presentation, I would like to talk about Helika, our development board, for assessing multiple U-Sound products for rapid prototyping. Helika contains a set of amplifiers to drive two MIM speakers and the two electrodynamical speakers. It has also GSP for audio filter settings. And we see Helika as a great development platform for makers who could combine it with a bendable audio stripe, for example, like Dio Maxi, for making own speakers or our Danube audio model to build own MIM speaker-based audio glasses or to build own MIMs-based headphones. All demos and all reference designs are available at the GGQ. So we have now at the end of our presentation, and thanks to Valeria for explaining all our application. We were able to convey the message that our MIM speaker can really disrupt the audio industry and can be deployed in all audio applications from portables, wearables, but also for Wi-Fi and macro audio applications. If you have any questions, you can contact us, public information available on our website, and I hope you have enjoyed this presentation. Thank you everyone. Thank you. Bye.