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Interview/Podcast

Interview with Roy from HardenedLinux

I had the pleasure to chat with Roy, a very experienced programmer that has recently moved to Japan. I think that you will enjoy and get some value from our short discussion.

– Please give us a quick introduction about yourself

My name is Mu Lei (Roy) aka NalaGinrut. Chinese. I came to Japan in March 2024. I found liked this country very much, and I plan to stay and live my life here. I have been a software engineer for 12 years, and founded two companies. Now I’m working as an opensource independent consultant in Japan.

– Why did you decide to come to Japan? Do you mostly work with Japanese companies or your customers are overseas?

I had Japanese customers when I during my first startup company selling IoT product. I got my biggest order from a Japanese customer at that time. So I have a good impression on Japanese companies and their purchasing power.

After the trade war and covid-19, I found it’s hard to do business with overseas customers from China. Almost all my previous experience and skills are for the global market, So I decided to come to Japan to find new opportunities. My main focus is on opensource infrastructure around Linux ecosystem. At least in Asia, Japan is the best choice for me to recognize the latest technology trends and meet my interest in infrastructure. Although Europe is also a good choice for the purpose, I think the Japanese culture is similar to Chinese culture, so I can adapt to it more easily.

– Have you contributed to any open source projects and what have you learned in those projects?

I’ve been contributing to several opensource projects in the long term, include HardenedLinux and GNU. I’m the maintainer of GNU Artanis (https://artanis.dev) which is a Web framework written in Guile Scheme since 2013. If anyone is interested both functional programming and web development, I recommend you try it. The design is largely inspired from Ruby on Rails.

Except for coding, I also contribute to documented best practices. I and my friends are maintaining an AI-infra project on Github (https://github.com/hardenedlinux/ai-infra), the aim is to help people to build their own AI infrastructures based on consumer-grade hardware. The reader who is interested in AI infrastructure can play with it and give us feedback.

I’m also the invited expert of W3C PING that help to review the privacy concerns in W3C specifications.

I’ve learned many things from opensource projects, including coding, design, testing, and documentation. But the most important thing I’ve learned is how to communicate with others. It’s not easy to make everyone happy, but it’s important to make everyone understand what you are doing and why you are doing it.

– What fields in IT do you enjoy working on the most and why is that?

I enjoy working on opensource infrastructure around Linux ecosystem. There’s great joy to me in building something foundation that can be relied on by others. And I like to research on the low-level stuff like OS kernel, framework, and compiler to figure out how does it work, and what could be optimized. I’m also interested in AI, it’s a hot topic in the IT field. I’m trying to combine AI with opensource infrastructure to make it more powerful, and help everyone could build their own AI system in lower cost.

– Any advice for young engineers that want to get into IT (similar fields are you described above) or that want to come to Japan

I would say not only young engineers, but also every people who is interested in IT no matter what age they are.

For them, I strongly recommend to find an interesting opensource project and stick with it for years. Making long term contributions to opensource projects is a very worthwhile endeavor. You will have de-facto mentors from seasoned engineers, add your patches or comments as contributions, and you will get reputation when people can rely on you. You can make friends and practice you English, the least but not last, it’s all free of charge, but you have to invest your time and energy.

I hope you enjoyed. For further discussions you may reach Roy on this email NalaGinrut(at)hardenedlinux(dot)org Replace the brackets with the proper at mark and dot simbols.

Categories
Audiovisual

Professional Projector Installation in Tokyo

A set up consisting 3 Epson projectors and 2 screens. The screens can be controlled electronically over the network as well as with a remote control.

The projectors are installed over the ceiling so that once the ceiling is closed, only the lens are visible. The projectors as well as the content sender and receiver (Crestron devices) can also be managed over the network.

The 3 projectors working together create stunning effects visible to shop visitors and passersby.

Projector testing in Tokyo
Categories
warehouse

Storing and unpacking 12 pallets of various sizes

Our customer could not receive the pallets in the picture at their office in Tokyo, so we were able to help with our warehouse to provide a customized service.

We received the pallets, unpacked the merchandise, delivered it without any packing materials to the customer site and set up the equipment at the customer site. We also helped to dispose of all the packing materials at the warehouse.

For privacy reasons on electronic equipment the customer did not want to share the storage space with other clients, so we arranged a caged space, where only people assigned to this project had access.

Please reach out if you have warehousing requirements in Japan, we will be happy to help.

Categories
Audiovisual Useful

Guide to Choosing Audio and LED Display Systems for Events

When it comes to organizing a successful event, the choice of audio and visual equipment can make or break the experience. In this comprehensive guide, we’ll explore the key factors to consider when selecting speakers, amplifiers, mixers, and LED displays, ensuring your event delivers an engaging and memorable experience for attendees.

Part 1: Choosing the Right Speakers

Speaker Type:

There are two main types of speakers: passive and active. Passive speakers require an external amplifier, while active speakers have a built-in amplifier. Consider the space and setup requirements of your event when choosing between the two.

Frequency Response:

The frequency response of a speaker determines the range of audio frequencies it can reproduce. A wider frequency range generally results in better sound quality. Look for speakers with a frequency response of 20 Hz to 20 kHz, which covers the entire audible spectrum for humans.

Power Handling:

The power handling of a speaker refers to the amount of power it can handle without being damaged. Ensure that the speakers you choose can handle the power output of your amplifier.

Sensitivity:

Speaker sensitivity measures how efficiently a speaker converts power into sound. A higher sensitivity rating means that the speaker will produce more volume with less power.

Impedance:

Impedance is the resistance of a speaker to the electrical current flowing through it. Most speakers have an impedance of 4, 8, or 16 ohms. Make sure the impedance of your speakers matches the output impedance of your amplifier.

Part 2: Selecting the Best Amplifier

Power Output:

The power output of an amplifier should match the power handling of your speakers. An amplifier with too little power may not provide enough volume, while an amplifier with too much power may damage your speakers.

Class of Operation:

Amplifiers are classified as Class A, Class B, Class AB, or Class D. Each class has its advantages and disadvantages in terms of efficiency, distortion, and heat generation. Class AB amplifiers are a popular choice for live events due to their balance of efficiency and sound quality.

Signal-to-Noise Ratio (SNR):

The SNR of an amplifier measures the ratio of the desired signal to the noise generated by the amplifier. A higher SNR means better sound quality. Look for amplifiers with an SNR of at least 90 dB.

Inputs and Outputs:

Make sure the amplifier you choose has the necessary inputs and outputs for your setup. This may include XLR, 1/4-inch, or RCA connections.

Part 3: Mixers and Their Role in Audio Systems

Inputs and Channels:

The number of inputs and channels on a mixer determines how many audio sources you can connect. Consider the number of microphones, instruments, and other sources you’ll need to accommodate when selecting a mixer.

Signal Routing and EQ:

Mixers allow you to adjust the volume, equalization, and routing of individual audio channels. Choose a mixer with enough control and flexibility to meet your event’s needs.

Effects and Processing:

Some mixers come with built-in effects and processing, such as reverb, compression, and delay. These can be useful for enhancing the sound quality and adding creative touches to your audio mix.

Part 4: LED Display Technology

Pitch Size:

LED pitch size refers to the distance between the centers of adjacent LED pixels. A smaller pitch size results in higher resolution and better image quality. The ideal pitch size depends on the viewing distance and the size of the screen. As a general rule, a pitch size of 1.2mm to 3mm is suitable for indoor events, while a pitch size of 4mm to 6mm is more appropriate for outdoor events.

Brightness:

LED displays should be bright enough to be visible in various lighting conditions. For indoor events, a brightness of 500 to 1,000 nits is usually sufficient. For outdoor events, a brightness of 2,000 to 5,000 nits is recommended.

Curvature:

Curved LED displays can provide a more immersive viewing experience and better viewing angles. Consider the layout of your event space and the desired audience experience when deciding between a flat or curved LED display.

Pixel Density:

Pixel density is a measure of the number of pixels per square meter. A higher pixel density results in better image quality and detail. For most events, a pixel density of 100,000 to 200,000 pixels per square meter is sufficient.

Choosing the right audio and LED display systems for your event is essential for delivering a memorable experience. Check out our dedicated site If you need technical help for your event in Japan.

Categories
Audiovisual

LOREATEC Attends the Audiovisual Exhibition in Tokyo

We recently had the privilege of participating in the yearly audiovisual exhibition in Tokyo. This event brought together major players from the industry, providing an ideal platform for Loreatec to build important connections for future collaborations. The exhibition not only allowed Loreatec to engage in exciting talks and presentations but also coincided with the launch of our new audiovisual services website, vision-led.jp

Key Players and Companies Present at the Exhibition

The audiovisual exhibition in Tokyo brought together the key players and companies from the audiovisual industry in Japan. From renowned manufacturers to innovative startups, the exhibition showcased the latest advancements in audiovisual technology.

We had the opportunity to witness firsthand the cutting-edge products and services offered by these companies, gaining valuable insights into the future of audiovisual technology.

Highlights of the Event and Interesting Talks

The audiovisual exhibition in Tokyo was a vibrant and dynamic event. One of the most intriguing aspects of the exhibition was the series of talks by industry experts that explored the latest trends and advancements in audiovisual technology.

These talks provided attendees with a deeper understanding of the industry’s direction and sparked thought-provoking discussions. Loreatec actively participated in these talks, sharing their expertise and insights gained from years of experience in the audiovisual field.

Overview of Loreatec’s New Audiovisual Website, vision-led.jp

Coinciding with the audiovisual exhibition, Loreatec proudly launched their new website, vision-led.jp. This website represents a significant milestone for us, as it embodies out vision for the future of audiovisual experiences. The website’s sleek design, intuitive user interface, and immersive content showcase Loreatec’s commitment to delivering innovative and visually stunning audiovisual solutions in Japan.

The audiovisual exhibition and the launch of vision-led.jp go hand in hand, amplifying Loreatec’s presence in the industry and reinforcing their commitment to innovation.

As we continue to embrace new technologies and engage in meaningful conversations within the industry, the audiovisual exhibition in Tokyo served as a catalyst for Loreatec’s growth.

Enjoy some videos and pictures from the event below!