One key component in our testing process is the semi-anechoic chamber – a controlled environment that eliminates as much external influence as possible, allowing for more reliable and repeatable measurements inside.
Our commitment to high standards is not just about meeting regulations; it is about ensuring that our products can save lives. Emergency services around the world rely on our communication solutions, and this responsibility is taken seriously. Every test conducted in the semi-anechoic chamber is a step towards ensuring that our devices can perform at their maximum capabilities when it matters most.
Adam Howe, Graduate Acoustic Engineer, Sepura
Recreating real-world scenarios using the head and torso simulator
To further enhance the realism of all tests, the acoustic engineering team at Sepura use a sophisticated head and torso simulator. This advanced piece of equipment simulates the acoustic qualities and physical dimensions of an average human adult. Using the simulator in the testing process allows for the replication of a human user’s presence, providing a more accurate representation of how products will perform in real-world scenarios. The placement of the ears and mouth, in conjunction with the head and torso, recreates how sound behaves around the human body, a critical factor in testing the performance of Sepura communication devices.
The simulator can be adjusted to meet any customer requirements or specific ways they use Sepura products. This means that certain aspects of our radios, such as noise cancelling algorithms, can be properly assessed and tweaked to make sure they perform in each customer’s specific use case. Whether replicating the sound stage at Heathrow Airport or the bustling atmosphere of Notting Hill Carnival, no real-life scenario is too challenging for our rigorous product testing.
The best way to describe an anechoic chamber is as a room without echo and reverberation. The array of wedges on the wall are designed to absorb all sound and therefore prevent any reflections from occurring. It is constructed as a room within a room, completely isolated on all sides, preventing outside variables from influencing our measurements. These qualities ensure a controlled environment for accurate and repeatable audio testing.
Adam Howe, Graduate Acoustic Engineer, Sepura
Team collaboration and innovation
Whilst acoustic engineering can often be a solitary job, it is inherently collaborative at Sepura. Acoustic engineers work closely with Customer Support to quickly troubleshoot any queries and with Mechanical Engineering to test prototypes and product development. Any issues, particularly with audio quality, are given top priority. For instance, a recent project involved teaming up with the mechanical engineering team, and their 3D printer, where we were able to print and very quickly test multiple designs within a short space of time. The commitment to perfection ensures that Sepura products consistently meet high standards.
Setting the standard for acoustic excellence at Sepura
Acoustic engineering at Sepura is a blend of meticulous testing, real-world simulations, and teamwork. Every detail matters, and Sepura’s semi-anechoic chamber is a cornerstone of our stringent testing process. By simulating real-world conditions in a controlled environment, we can ensure that our products are not just reliable, but lifesaving. This dedication to excellence demonstrates our commitment to supporting the critical communication needs of emergency services worldwide. As we continue to innovate and uphold the highest standards, Sepura remains at the forefront of the industry, delivering solutions that truly make a difference.
I joined Sepura because I wanted to utilise my postgraduate training in acoustics and apply my skills to products that are used by essential services like the police force and emergency services. This role is really appealing to me because it feels like I'm making a difference.
Adam Howe, Graduate Acoustic Engineer, Sepura