This is a field recording from the salt meadow at the north shore of Bognæs, by Roskilde fjord. It was captured 6:30 am, 19th of May 2012, just at the edge between the wood and the open salt meadow. It’s a beautiful remote location and the background road noise is low, which is a pleasant experience. But then, the bird calls were also pretty distant, so all in all it turned out into a very quiet recording…
Was attempting to do some live videoing during the recording – i clearly need more practicing on this!
Her er så en naturtro lydoptagelse fra dagens sprængning af 2 højhuse i Rødovre, København, 13. maj 2012. Hvis du afspilller lydfilen i nedefor i hovedtelefoner, skulle du gerne få en livagtig 3D lydoplevelse fra da bygningerne styrtede i grus.
(Sound recording of high-rise building demolition).
En masse mennesker var samlet for at opleve højhusene blive tilintetgjort på få sekunder. Alt gik fint, men den efterfølgende beton-sky gav dog lidt travlhed med at komme væk. Optagelsen er lavet tæt på Rødovre station. Den første sprænging er af højhuset længst væk (ikke synligt på billedet). Højhuset på billedet ryger til gengæld ved den anden sprængning.
Det gamle højhus nærmest Rødovre station før sprængning. Lydoptagelse herfra.
Lyt til sprængningerne – bedst i hovedtelefoner. NB! Store brag ved 00:18 og især 1:22 !!!
This post describes a field sound recording of a wind turbine, 29-4-2012. There are MANY in Denmark, but only few in the Copenhagen region for some reason. The noise, especially the very deep and far reaching rumbling sound is currently heavily debated. It appears to be a challenge to really get hold of how those wind turbines actually sound and the precise characteristics will always depend on types and sizes of wind turbines. It is a bit complicated.
Using my usual dummy head recording setup, with QTC40′s, pressure equalizers and an extra layer of wind protection, I have tried to make a clean and realistic recording of a wind turbine.
This short clip summarizes the wind turbine noise at low and higher wind speeds. Here in uncompressed wav format to preserve the full original quality and full as-recorded low frequency contents.
Recording of the traffic sound and noise during the rush hour from 8 to 9 am on a regular morning in Copenhagen, 13.4.2012. It is captured at the junction at Peblinge Sø and Gyldenløvesgade, near Søpavillonen. It was a typical morning with quite heavy traffic, but still maintaining a decent flow. The many cyclists are surprisingly silent and go mostly unnoticed on the recording.
View from the recording setup
With the bike setup it was possible to get a good position near the traffic at the junction. I was using the QTC40′s and the fimo form 1 pressure equalizers to improve the pickup on the distance and the stereo image. Following, a slight softening EQ has been applied.
(Update 5.4.2012) This post does not deal with audio, but with video as a change. I have some ideas of combining audio with video in some future posts.
This is a demonstration of a DIY method to effectively reduce moire and aliasing problems occurring with common DSLR cameras. The method uses a simple uncut ophthalmic lens, which you can be lucky to get at your local optical shop.
Moire patterns can be quite visible with DSLR cameras for certain scenes. The chosen scenes in the video; the ISO resolution chart, wooden table and the brick wall, are some of the very severe moiré-cases I have encountered with the Nikon d5100 camera. Watch out for flickering interference patterns on the table and brick walls!!!
While the popular DSLR cameras offer great lens and sensor qualities, they are normally suffering from specific drawbacks. One of these are the aliasing, Moiré interference patterns. From time to time it really disturbs the video quality, by introducing high frequency noise and artifacts. This is especially visible with textiles, brick walls, wires and other regular structures. The aliasing gives noise in the image, and stresses the video compression.
Even though it looked like we were stuck with freezing cold Siberian air masses in the beginning of February, the spring has rapidly made its way. This Sunday, 11-3-2012, it was the first really pleasant and sunny day. This made Dyrehaven north of Copenhagen, Denmark, a crowded place, but I found a nice remote spot.
Still not that many sounds from the birds. That is why trains and airplanes (and motorway) still appear very loud. The identified birds are: Great tit, Raven (2:45…), Nuthatch, Chaffinch, Cockcrow, Buzzard, Great spotted woodpecker (1:15).
Together with the audio recording, which was made with the usual setup, I took a video to supplement the sound. It is still a bit experimental at this stage, but the aim is to better document the time and place.
The sound recording with video is a 15 minutes continuous take where sound and video have been synchronized.
Put it in HD-mode to get the best sound, and use headphones. Though not really sure what Youtube is doing to the sound quality. So, alternatively the sound recording can be played below (in mp3).
Fireworks in Copenhagen has developed into an intense crackling inferno. It is normal to buy a considerable volume of fireworks, being mostly larger batteries and sky rockets with colorful explosive effects. Here I have tried to make a recording from a residential urban area, Vanløse, Copenhagen, starting about 10 minutes past twelve. At 24:00, there is a noticeable quiet period, but this only lasts until people finish up with the bells and get out on the streets to fire up. Then the big crescendo starts.
Fireworks in Copenhagen 2011-2012
Note fairly high volume blasts through out the recording (max at about 11:30).
This recording is taken during one of the stormy and mild days between Christmas and New year 2011, Northern Jutland, Denmark. Its always more windy up there, which can also seen for many trees which have a permanent sloped shape. I found a good location, well sheltered from the wind by smaller pines, and with clear view to rows of higher wind-battered tree tops. The wind is coming from left to right on the recording.
Stormy tree tops to the right
Below is a 7 minutes clip of the recording. The sound is best suited for head phones.
This is a recording from Dyrehaven 14th of December 2011, at the same place as I have visited the last times (in the autumn and spring ). Seriously not much on the recording this time… Well that is the everyday life in the forest in this season, a dark and gray Wednesday morning in December. The recording (32 minutes) starts at 8:15, when it is still quite dark.
The forest is much more open without the leafs - December, Dyrehaven
Generally very quiet in the forest. None of the animals of the forest worry to make any unnecessary noises or calls. A crowd of maybe 50 deers were passing by, about 100 meters away. Just quietly, like all with a distinct expression-less face. They know that winter has not started yet, and there are many months before spring starts, so it is just time to be patient. It has been very stormy and rainy the last days. It will most likely get much colder soon.
The leaf-free tree tops give a slight hiss and forest is now very open. The morning rush hour at the motorway a few kilometers away cuts across very easily.
A recording this morning out in the Forest, Dyrehaven north of Copenhagen around 7:45. It is autumn now, more windy and the leafs have started falling. I am also starting to feel the cold in the morning 7 C. Apart from some distinct distance deer calls the sounds out there were not very prominent. They seem more part of some palette of background noises, taking turn to have the attention. It appeared quite silent, but with a little amplification, I was surprised of the number of different sound elements. E.g. it is possible to hear leafs and other things falling down from the trees.
Dyrehaven with beginning autumn colors
Generally, throughout the 12 and 20 minutes recording, there is a lot of wind noise from the tree tops. But, once in a while something else happens ! (You will find out, if you haven’t fallen asleep!)
