What is speech intelligibility, Speech Transmission Index (STI) and STIPA? Why is it important and how is it measured? For Public Address & General Alarm (PAGA), Public ...

A Detailed Pedestrian Comfort Wind Microclimate Simulation Feasibility Study As the Xi team counts down the days until Christmas, concern was raised at our weekly meeting.  “Will ...

Modelling Lithium Ion Batteries Batteries are extremely complex systems, and because of that there’s always room for improvement. Indeed, that’s why lithium-ion battery research and development is a massive ...

Digital Twins rely on capturing and processing accurate real-world data by combining it with a virtual model.  The three pillars for developing a successful, real-world data-driven, functional digital twin ...

Reduce risks related to supply chain shortages using simulation. Model your original design, analyse performance & make more informed business decisions. What Types of projects can be affected by ...

Improving cost-benefit ratio and reducing risk are key aims for a technology developer when working to get a product to market. This is as true of the early stage ...

At Xi, we have a lot of experience working remotely on design and engineering projects. Many companies are having to adapt to new work practices after the Covid-19 outbreak. ...

Noise Characterization for Science and Engineering Noise Characterization for Science and Engineering Understanding the causes and properties of noise sources is important in a wide variety of fields, ...

There is a growing interest, both in industry and academia, in using microfluidic techniques (e.g., cross-flow, flow focussing, and co-flow) to generate droplets in a controlled manner. Such processes ...

Where is ultrasonic non-destructive testing used? From offshore wind turbines, desalination plants, bridges and rail lines, to boats, aircraft motors, pipelines and our own bodies, maintenance is a (hopefully) ...

Most people have, at some stage, been taught that matter exists in one of three states: solids, liquids, and gases. This rather simplified system of classification of matter has been ...

We hope everyone is staying safe and getting into the Christmas spirit. We hope in the festive period you will manage to reflect, recharge and get ready for a healthy and prosperous 2022. Following on from our debate about Xi’s top engineering films, the team has debated (again) our top 5 Christmas films, but, this time we dig even deeper into the engineering aspect of them.

Auditory localisation and binaural audio The term localisation refers to the ability of humans to determine the location of the source of sound that they hear. Humans achieve this ...

Innovation has always been difficult. It takes time, and, historically, expensive trial and error. Sir James Dyson is renowned for his perseverance in his quest to develop a bag-fee ...

We as humans require energy, to power our homes, cars, phones and all of the other fantastic technological innovations that continue to change and benefit our lives. But we can’t ...

A critical part of wind turbine design is making them as quiet as possible, as noise can affect people living close to wind farms. Modelling the acoustic design of wind ...

Sound Pressure Level is a quantity used to represent the amplitude of sound, but the perception of loudness does not necessarily directly depend on Sound Pressure Level. It is ...

With the ever-increasing demand for small and precise technology and equipment for both consumer and scientific use (such as nanotechnology), there is a growing need for clean rooms and ...

We are leading experts in underwater noise modelling. An expert group of multidisciplinary engineers and scientists, Our team has worked on a wide range of underwater modelling projects with a variety of stakeholders such as regulatory bodies, developers and manufacturers. Xi has successfully collaborated with the Scottish Association of Marine Science (SAMS) on previous projects and has been able to strengthen and deepen its offering by partnering with these organizations and drawing on their significant expertise.

Xi’s team has vast experience in an extensive range of sectors, measuring, diagnosing, and solving our clients’ noise and vibration concerns. Xi provides a complete solution, going further than ...

Tonal noise produced by wind turbines is a serious and often complex issue which can be particularly vexatious to residential communities. Tonal noise emissions are subject to strong regulatory penalties ...

Here at Xi, we are both personally and professionally passionate and curious about interesting and challenging questions. This often leads to very entertaining conversations about all things weird and ...

Audio Aliasing is an effect which occurs when converting an analogue signal into a digital one with an insufficient sampling frequency. The result of this effect is that the ...

The future of innovation is using simulation tools like a master craftsperson and harnessing the power of the transistor to reduce the time taken for the 99% perspiration and allow more time for genius. The future of innovation is harnessing simulation and if you haven’t already – let Xi help you get with the programme.

We hope everyone is staying safe and that the coronavirus pandemic ends soon. For those climbing the walls in lockdown, after lots of online debate between the team, we ...

Ultrasound imaging is widely used in hospitals to produce pictures of inside a patient’s body. It is commonly used to examine unborn babies in pregnant women and to diagnose ...

We were pleased to hear that we are back on track to reduce our dependence on fossil fuels. Last week the government reversed the 2015 effective ban, allowing onshore ...

A tone is a narrow frequency of sound that is prominent against the neighbouring broadband noise. The tone itself does not require a lot of energy relative to the ...

Building acoustics – Interior design for eyes and ears Background noise in some restaurants can reach uncomfortable volumes which can be loud enough to put you off your dinner. ...