Guest Contribution by David Nichols
An engine is, in essence, an air pump. Air comes in, gets mixed with fuel, goes bang, and leaves again. When talking about ways to make more power, the most obvious is to make a bigger bang. However, gasoline works best at a very specific ratio of fuel to air, which is roughly 14:1. So, if you want to make a bigger bang, you need 14 times more air than your increase in fuel to get it.
When trying to get more air, one solution is to use a bigger engine. More, larger cylinders means the pump can inhale a bigger breath, which means more fuel and more power. However, this so-called “natural aspiration” or NA for short, has a limitation in air pressure. Just like a straw, the inhale of an engine works by creating low pressure, which atmospheric pressure then fills in. So, another way to get more air into an engine is to pressurize it, or use “forced induction.”
There are a few different methods of forced induction, but today I want to talk about one in particular: turbocharging. A turbocharger is a turbine that is connected to the exhaust gas leaving the engine on one side, which then drives an impeller on the other side to create air pressure. The more and faster exhaust gas comes out of the exhaust, the more and faster the intake side compresses air. When the amount of pressure generated by the propeller is greater than atmospheric pressure, the system is making “boost” and the amount of boost can be measured in PSI. (more…)
Years ago, when I first started dabbling in the deep and dark world of Max/MSP, I attempted to create the sound of a car engine. This month’s theme (which is ‘vehicles’, if you didn’t know) reminded me about it. I opened up the patch after ages and was a bit appalled by the state of it. There are hidden skeletons in every old patch!
Instead of digging through a dated project, I recreated a patch/idea I had used about a year ago when designing sounds for a remote controlled toy airplane. I tried to adapt the simplicity of that implementation to a ‘regular’ car engine.
Here’s a sample of what it sounds like (all synthesised):
This patch was put together fairly quickly and could do with more refinements to improve the character and reduce the amount of ‘digital-ness’ in the sound. The model quite obviously breaks at higher frequencies/RPMs.
Here’s the patch: (more…)
The results are in! Thanks for taking part in the competition, I’m told the AudioGaming crew were quite overwhelmed by all the responses they received. Here’s what Amaury said:
Some quotes were just too funny so we decided to award two prizes. One for the best serious quote, one for the funniest. The two winners will get full post-production bundles.
Winner: Kevin Peters. Sculpt, control, create.
Runner up quotes: Everything indoors, The science of sounds, The future of sound design today
Winner: Andrea Proietti. Presets are for losers
Runner up quote: Unleash an audio storm like a Greek god of sound.
Congratulations Kevin and Andrea!
I’m really stoked by the way The Tonebenders Podcast has been jumping onto our monthly topics when they can. This time, they’ve got a spectacular roundtable conversation with Rob Noke, Watson Wu and Max Lachmann. Give it a listen, and make sure to visit the Tonebenders webpage to find out more information about their guests in this episode.
Thanks for the contribution, guys!
Guest Contribution by Stephan Schütze
Why I am not going to tell you which microphone to use
The simple answer to this statement is, because we don’t have time. The exact choice of which microphone to use for each situation of recording a vehicle is a detailed exercise and would take more pages than we have space for. Even then, there is a major flaw associated with the idea. What I hear and what sounds good to my ears may not work for you. Suggesting Brand X or a Model 2B, stuffed up the exhaust pipe of your Honda, may only serve to encourage you to spend more money than you need to. As much as we all love to buy new equipment, I think there is value in stepping beyond the tools and toys. I’m going to be more general and share a more conceptual approach to capturing good vehicle sounds.
What I will do is take you through some of the essential lessons I’ve learned when recording vehicle sounds for Sound Librarian. In creating our sound libraries, I’ve recorded motorbikes, cars, tanks, boats, airplanes, pretty much every vehicle I could get my microphones near.
image by: Nicolas Raymond
We have a new theme up! As many of our readers know; the old theme has been troublesome for quiet some time. And we got fed up with it’s unreliability and lack of support. We do apologize for any inconvenience incurred by that awful collection of CSS and tears.
We would like to thank everyone for their patience as we continue to tweak this new look and feel. Any weirdness you encounter please be sure to let us know! We’d like to thank our own Varun Nair for his hard work in making this new (and way better) theme usable.
We’ll be making more fixes and changes over the coming weeks to make it more readable on mobile devices.
Many thanks to Brad Dyck for contributing this interview. You can follow Brad on Twitter @Brad_Dyck
It was my pleasure to speak with Rob Blake, Audio Director best known for his work on the Mass Effect trilogy. Plants vs Zombies: Garden Warfare is available now for PC and will be available for PS3/PS4 on August 19th.
BD: What originally made you move away from the UK to come over to Canada?
RB: Actually, before I came to Canada I was working at a small start-up in Spain (Tragnarion Studios). It was a really fascinating place to work because they were really passionate gamers who just wanted to make something they wanted to play themselves.
After I’d been with them for nearly a year I got offered the lead position on Mass Effect. I just finished the project I was working on in Spain so the timing worked out well. It was a dream job for me at the time – I’d been an Audio Lead before in the UK but working on something like Mass Effect was very special.
Guest contribution by Ben Minto and Bence Pajor of DICE
… Mr. President!!! …
There we were in The Thirsty Bear, reflecting on the first lot of GDC Audio Sessions, and up walks Mr. Menhorn. He knew what he wanted from us; so after introductions, a few more IPAs and some passionate discussion it was in the bag.
So here we are. A “behind the scenes”, warts and all, article and video about the helicopter models in Battlefield 4, written for the Designing Sound ‘vehicle’ month, of July.
The original model (design, implementation, samples etc.) and video capture were done by Bence Pajor, the Battlefield Audio Director and I’m (Ben Minto) handling the write up, even though I’m heading up the audio for DICE’s Star Wars Battlefront project. This is because we were both Audio Directors on Battlefield 4, due to Bence’s absence during the middle of the project, which was in turn due to the birth of his son (mini) Olof and Sweden’s generous paternity leave. (more…)
“Footsteps with character: the art and craft of Foley”, a great essay written by Benjamin Wright, included in the Screen journal.
“In this essay I look more closely at modern Foley performance and aesthetics, giving special attention to the customized nature of Foley effects and the importance of creating sound with ‘character’. What interests me is not only how Foley professionals have negotiated their role as sound artists but how the professional goals of Foley have shifted in response to the increasing use of digital audio workstations.”
Download/read (PDF file) / via musicofsound
Image by Late Model Restoration Supply, used under Creative Commons license. Click image to view source.
Guest Contribution by Michael Hermes
Modern cars are boring. They’re safe, practical, and quiet to the point of being uninteresting. A passing sedan glides by with a gentle whoosh of air passing over the car and the tires on the pavement. It makes for a pleasant ride to work but a short article on sound.
Cars didn’t start out quiet, though. Decades of engineering and research have identified the potential noise sources on a vehicle and reduced them to almost nothing. The internal combustion engine-powered car has a vast array of potential noise sources, all of which are quantified and treated by Noise, Vibration, and Harshness (NVH) engineers.