Posts in Acoustics
Building design in VR
Building design in VR

Do you recognize this feeling? You are working on a report or a text document, and you proofread it 10 times without finding any errors, and then send it to the printer. While proofreading the physical copy, you often discover several issues within seconds or minutes, that you have been staring at on the screen, completely unable to see. It has happened to me more times than I can count. Moral of the story; By engaging other neural pathways in your brain, you will bring new insights even with very familiar input data. Tonight, I had just that experience in VR.

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Engineering, AcousticsRikard ÖqvistVR, vrex, acoustics, engineering, BIM, designComment
Steve jobs on consulting
Steve jobs on consulting

Steve Jobs once did a speech on consulting and how crucial it is for learning and improvement to “stick around” for a long time, several years, to fully “own” the consequences of your recommendations. I have worked as a consultant most of my professional life and it hit very close to home. In the building industry where I am an acoustic consultant, the delay between your first advice to a client to the finalized building is measured in years. And I am finally getting old enough to seeing several of “my” projects materialize. It is equally scary and wonderful.

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Acoustics, EngineeringRikard Öqvistacoustics, consulting, wisdom, construction, buildingsComment
A fresh perspective
A fresh perspective

One of the items on my bucket list this Christmas was to play Nintendo Wii with my boys. However, when you do not own a TV, it becomes a proper challenge. I did have a quick and dirty solution in my sleeve, though. In my drum rehearsal room, I have an old 37” TV mounted on a speaker stand with a VESA mount, to use as a practice teleprompter. This was a simple “drag and drop” operation and the couch gaming was on. But when the holidays ended, we realized that it is quite nice to have a big screen in the living room. We haven’t seen this many movies in ages, so there is a lot of catching up to do. The primary reason we do not own a TV is that our living room floor plan cannot provide a proper setup or placement of the TV/Sofa combination if you aren’t prepared to accept some feng shui from Hell. But we finally figured it out, by thinking outside the box.

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Acoustics, DiaryRikard Öqvistgenelec, home cinema, TV, nintendo, homeComment
Physical meetings will never be replaced
Physical meetings will never be replaced

Have you ever had that feeling in a Teams meeting where you interrupt each other by starting a new sentence “simultaneously”? And then you realize your interruption, so you go quiet, wait a little and start again because it seems as if the other person is giving you the que to go ahead, only to interrupt each other again. This almost never happens when you are talking to someone in the same room. I think the crucial difference here is latency. Over Teams, you introduce a handful of precious milliseconds, and they can make a world of difference. This is analogous to playing music in a band. To play in time, “tight”, the latency must be very low. This is also the reason why it is almost impossible to play music together online.

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Acoustics, EngineeringRikard Öqvistcommunication, internet, latency, music, conversationComment
What computer is best for an acoustican?
What computer is best for an acoustican?

Back in 2019 I bought my first tablet computer, a fully-specced HP Elite X2. I had counted on doing a lot of business trips and when you’re flying a lot, a tablet is hard to beat. Well, shortly thereafter most travel plans were cancelled for a couple of years, so I ended up with a very slow desktop solution instead. It didn’t take long before the tablet ended up as a part of my travel kit and I replaced it with a proper desktop workstation. However, I just moved into a new (secondary) office and once again I need to go back to the laptop+docking station path. In this post I will list some of my thoughts about what might be valuable for me in my work as an acoustician.

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Computer, Acoustics, EducationRikard Öqvistworkstation, laptop, tablet, gpu, egpu, VR, 3DComment
There is no work-life balance
There is no work-life balance

About ten years ago, I was the lead guitar player in a successful metal band called Meadows End. Playing on that level, including international tours, was something I had dreamt about since I was a little kid. A couple of thousand hours of hard work later I finally achieved my goal. The joy was unfortunately cut short. After only two albums, my life hit a fork in the road. I was writing my PhD thesis at the same time and had been under heavy stress for a long time. After many long conversations with my wife, and mental gymnastics on how to make it work even though it meant placing three suitcases (career, family and the band) in a baggage compartment that had room for two, I finally realized that I had to let go of one of them. That was the hardest decision of my life.

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Engineering, Diary, Acoustics, ParentingRikard Öqvistfamily, career, goals, teaching, music, bim, civil engineeringComment
Don’t waste your time with daytime noise measurements
Don’t waste your time with daytime noise measurements

Last week I got an urgent call to measure noise from installations as soon as humanly possible, in a project which have had some problems with too loud ventilation. The problem had just been mitigated (hopefully) but they still needed a protocol to give the green light to the building. I basically booked the next possible flight and went to Stockholm. Usually, I hate doing these one-day trips. They can often be exhausting. This time however, it wasn’t a complete disaster. I had planned extreme margins both before and after the measurement. Still, I learned a couple of valuable lessons on why these one-day trips are a bad idea anyway.

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Engineering, AcousticsRikard Öqvistnoise, installations, ventilation, acoustics, buildings, quality Comments
Running with a bicycle on your back
Running with a bicycle on your back

I am almost embarrassed to tell you that I haven’t jumped on the dwg bandwagon until 2022. On the other hand, I have a feeling that I am far from alone among acousticians. It is common that we “paint” on PDF files instead of working with “real” dwg files. This has been a thorn in my eye for many years. PDF painting works fine if you are only going to do one (1) drawing and no updates, preferably in a small building. But that’s not how it works! To do multiple revisions of drawings in large multi-storey building can easily take hours to do in Bluebeam Revu, because it is not the right tool for the job. For example, I recently did an update of a school with new floor plans – 18 drawings in total. With Revit, I could update them in minutes, what would previously take at least half a day. I was smiling the whole of last week.

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Acoustics, EngineeringRikard Öqvistrevit, cad, dwg, civil engineering, acoustics, drawingsComment
It’s not over till the fat lady sings
It’s not over till the fat lady sings

For weeks on end, our home and office has been like a construction site. But today, our last (planned) renovation project – a brand new office air heat pump – was installed. This calls for celebration indeed, however, I don’t think we have earned it just yet. There are still plenty of extremely small things that I think needs to be taken care of before we can claim “mission accomplished”. Things like scanning the lawn for leftover screws and nails, small chunks of insulation, packaging materials, leftover wood etc. And finally, a proper house-cleaning. One should be careful to claim a project is over prematurely.

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Acoustics, DiaryRikard Öqvistnoise, heating, health, workComment
Tools and knowledge
Tools and knowledge

Last week we tore down our old ghastly kitchen FTX unit, which left a gaping hole in our kitchen above the stove. And today I had the pleasure of observing a kitchen carpenter working his magic. I had sent him a couple of phone pics and an outline of the idea a couple of days in advance. This morning he turned up with his van and portable workshop and before long we had a brand-new kitchen cabinet instead. The thing that impressed me the most was the speed of his progress. It is a beautiful thing to observe a professional doing what they do best, when knowledge and tools harmonize perfectly.

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Acoustics, DiaryRikard Öqvistwork, knowledge, incremental improvementComment
Silence
Silence

The shoemaker's children go barefoot. In my case, that was exceptionally true up until today. I’m an acoustician, which means I have devoted my life to improving the world by improving sound quality. That’s why I have been so embarrassed by my own personal living environment. We had in our kitchen one of those old kitchen cupboard FTX ventilation units including a kitchen fan with the suction power of an asthmatic sucking air through a straw. But that’s not even close to the real problem: The noise. The old unit produced an earth-shattering 42 dBA and 62 (!) dBC in our kitchen. Throughout my whole career, I have never come across anything worse in any dwelling. It was up until today the literal definition of how to NOT practice what you preach.

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AcousticsRikard Öqvistacoustics, ventilation, sound quality, noise, health, sleep, annoyanceComment
There is no place like home
There is no place like home

The most frustrating thing about being an acoustician (for me) is the delay between you giving a recommendation to a client and the final result. This process typically takes several years. I have had many sleepless nights (metaphorically speaking) where I have thought about specific technical solutions like floor structures or junctions. And when I finally send my documents to be used for the construction of a building, that’s typically it. I never hear about it again, except for some control measurements at the building site in the best-case scenario. But I want to know how the final product turned out! Last week, I decided to do something about it and went on a road trip visiting eight of our dwelling projects.

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Engineering, AcousticsRikard Öqvistphotography, engineering, travelling, work, family Comments
Lessons from parental leave
Lessons from parental leave

Tomorrow starts my third week of 100% focus on dad duties. It’s been an interesting time, and a fantastic boot camp for learning better micro-management skills. No matter what task you are trying to accomplish, the only person that can have your back every single time is your past self. Preparation and Routines are crucial. From breakfast to dog walks, you won’t have time to look for misplaced stuff. I have found these weeks thoroughly enjoyable, and it has been the perfect healing that I badly needed for my soul.

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Acoustics, Engineering, ParentingRikard Öqvistkids, parenting, engineering, civil engineering, consulting, acoustics, personalityComment
Elon Musk was right
Elon Musk was right

Elon musk recently told Tesla Employees to get back to the office for at least 40 hours per week, or “pretend to work somewhere else”. I noted that there was a significant backlash to this statement in the comments sections on LinkedIn for example. Clearly, many people do not agree with Musk and appreciate the choice to work from home or the office and where you consider yourself most productive. It is a question that evoke a lot of emotions. Personally, I think Musk is correct. I also think it is useful to evaluate this question and compare it to education.

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Acoustics, Education, EngineeringRikard Öqvistworkfromhome, work, elon muskComment
Work as hard as you can on one thing and see what happens
Work as hard as you can on one thing and see what happens

Yesterday me and my wife listened to Dr Jordan Peterson’s lecture in Stockholm, with the same topic as the title of this blog post. As a person who is extremely high in openness, I find this especially interesting. People with this personality trait, creative people, can often have a problem that they keep shifting from one thing to the next without ever finishing anything. I can recognize myself in this to a certain degree. But I also know that I am not too extreme in this regard either. Raphael, a friend of mine might very well be the most creative person I have met. And he told me something that is probably only is visible to someone in the 99,9th percentile in creativity (i.e. way higher than me, even if I should be in the 99th percentile…). “Rikard, you are an artist, but you are also very practical.”

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Education, Acoustics, EngineeringRikard Öqvistteaching, focus, career, art, music, universityComment
50 years of progress
50 years of progress

A couple of weeks ago, I was checking out a musician 2nd hand site. And I noticed something extremely unusual for a site like that, a vintage Bruel and Kjaer type 2209 sound level analyzer. There is something very appealing with the design of vintage measurement equipment. Everything from the big knobs and clunky switches to the choice of text font just oozes with hand made quality. I thought that this would make an excellent addition to our Umeå office. As a conversation starter, it doesn’t get much better than a professional sound level meter from five decades ago.

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AcousticsRikard Öqvistretro, vintage, acoustics, engineering, norsonic, bruel&kjaerComment
Sound pressure level from E-drums
Sound pressure level from E-drums

The greatest difference between acoustic drums and electronic drums is that you can control the sound pressure level from the electronic drums by turning the volume knob. Whereas an acoustic drum kit will produce a sound pressure level that is what it is. If you want to play rock or metal, you need to hit the drums hard, or it will not sound or feel right. Consequently, the sound pressure level will be very high. The drummer only has one option, and that is to wear proper hearing protection while drumming, or face a near certain risk of permanent hearing loss. With the E-drums on the other hand, you can choose whatever sound pressure level that you like, and your ears will be safe. Or will they?

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Acoustics, MusicRikard Öqvistdrums, edrums, noise, acoustics, sound, hearing, tinnitus, sound insulationComment
VR Motion sickness
VR Motion sickness

Many years ago, I tried Virtual Reality (VR) for the first time. It was the Oculus Rift developers kit, one of the very first Head Mounted Displays (HMD) that was the result of a KickStarter campaign in 2012. It looked like a pair of ski goggles superglued to an iPad. I remember that I went for a ride on a rollercoaster that was extreme, even with some jumps. I played around for about 15 minutes and then suffered from severe motion sickness for about three hours. The concept was extremely cool, but clearly the technology had a long way to go. Last week I pulled the trigger and got my first VR HMD (HP Reverb G2). My gut feeling is that the technology is now mature enough to provide a lot of value. In the coming months, I will evaluate how VR can be used in civil engineering and acoustics.

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Acoustics, EngineeringRikard Öqvistvr, virtual reality, acoustics, engineering, civil engineering, ifcComment
The Catch-22 of drumming
The Catch-22 of drumming

I started playing the drums in July 2019 and am in my second year now of daily practice. First and foremost, I would consider myself a guitar player because I have played for more hours on the axe than on any other instrument. If you already know one instrument, it will be easier for you to learn a second, even easier to learn your third and so on. Mastery on multiple instruments is comparable to polyglots who speak several languages. It gets easier and easier to acquire a new one, the more you already know. In this post, I will focus on how some important lessons I have learned in my drumming. Some techniques translate well from the guitar, and others do not translate at all.

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Acoustics, Engineering, MusicRikard Öqvistdrums, guitar, practice, consistency, growth, analogyComment
Upgrading my live streaming setup with a system camera and a studio microphone
Upgrading my live streaming setup with a system camera and a studio microphone

My YouTube channel has seen some serious growth lately and I realized that it is time to up the ante regarding the production value. Up until now I have been using a Logitech BRIO webcam, and a Jabra Speak conference phone. They get the job done fine, but the camera struggles with White balance and focus and the microphone picks up a ton of room reverberation. So, I pulled the trigger and invested in a proper mirrorless camera with real optics and a spring-loaded studio arm to mount a large membrane microphone. This gave a huge boost in production quality and my online meetings have never looked and sounded this good. I am also proud that I kept going with basic equipment for almost 1½ years before upgrading. My past self had a tendency to get stuck in gear acquisition syndrome instead of producing content. You should always let the content come first, and then invest.

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Acoustics, Engineering, EducationRikard Öqvistlivestreaming, online education, camera, audio, recording, video, DSLR, studioComment