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Posts Tagged ‘Sound devices MixPre6’

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I was shocked last summer. Then I realized it was becoming increasingly difficult to get interesting recordings of glaciers. I was missing out on unique opportunities if I would not change my traditional methods of recording glacier sounds.
Glaciers that have so far been accessible with all kind of sound seems much quieter than before. Finding good places seems to be more difficult each year and to reach them with all of my equipment are getting even more difficult. Many glacier toes in Iceland seem to be turning into „dead ice“ at the toe end so they will not be crawling under its own weight anymore just lay where they are until they melt down.
One of this glacier which has gotten thinner, smaller and quieter each year is Svínafellsjökull glacier.
I spent three nights recording there last summer without recording anything „interesting“
The temperature varies between 2°C over the night, to 18°C during the day. During the night it melted little but it started to melt intensely at dawn and became very intense during the day, especially when the sun was shining on the glacier.
The following recording was made in a small „Ice cave“ in the glacier toe, 27th of May 2019. The time was around 8 AM, about an hour after the heat started to rice and the melting began. In this 27 minutes long recording  you will clearly hear the melting of the ice increase until I became afraid about the microphone and I stop the recording.
You can hear several times a deep rumble sound, probably because the glacier is crawling high in the mountain. Many other strange sounds are in this recording, some are known, while other unexplainable. I was never close by so it is not sound from me.  Some of them are loud, so be careful, do not listen to the recording on high level.
Other sound in distance are tourists, almost constant motorist traffic. But fossil fuel machines and humans mobility are sadly one of the reason for rapidly shrinking glaciers now a days.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low-mid level.
If you are having problems playing this or other recordings on this blog, try to open each blog-post in separate new frame or tab.

(mp3 256kbps / 51Mb)

Recorder: Sound Devices MixPre6
Mics: Sennheiser MKH8020/8040 in Parallel AB40
Pix: LG G6
Location: 63.996493, -16.874061
Weather: Calm, light clouds, around 10°C

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Natural silence is my favorite recording material, mainly because now a days it is so difficult to find it and it gets more difficult every year. I have been interested for salience in many years, or since I discovered it in my cycling trip all over Icelandic’s highlands about three decades ago. It was before the tourist boom and before Icelanders started to travel in their own country. So I was sometimes alone for many days in the desert. This moments in deep silence have inspired me so much it has shaped my life for lifetime.
One of this quiet places in Iceland was north of Vatnajökull glacier.
Shortly after the millennium, the traffic in this area increased a lot, especially because the Icelandic government had planed to build the biggest dam in Europe (Kárahnjúkastífla dam)  to make electricity for one ALCOA aluminum smelter in Reyðarfjörður, east of Iceland.
All that project ended as a huge natural disaster, which also split the people´s community in Iceland into two groups with and against this project. More information about this disaster can be found on Saving Iceland´s website.
Last time I visited this area was early summer 2018, I spent a night in Vesturöræfi on a place named Kofaalda.
I remembered my first thought when I sat up the recording gear. I was going to waste gigabytes for nothing because I heard nothing. Totally nothing. Well, there were some birds in distance …and yes, on the left side, behind hill about 2 km away there was the river Sauðá and on the right side a waterfall in Kringislá river about 4-5 km away.
I started recording.
It was not until last summer when I got opportunity to make a noise reduction on this recording, I noticed, after about 90dB gain this silence was rich of sound.
Most of this night I was struggling with rumble by gust. But between 5 and 6 o´clock the wind went down and something unexpected happened above end near the microphone.
Several bird species are in this recording: Dunlin, Golden plover, Pink-footed goose, Purple sandpiper, Common ringed plover, Snow bunting and Arctic skua.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level.
If you have a problem to play recordings in this blog try to open each blog-post in new frame or tab

( mp3 256kbps / 48Mb )

Recorder. MixPre6
Mics: Sennheiser MKH20  (AB40 setup laying on the ground)
Pix. Canon EOS-M50. See pictures of the landscape which was drowned by the bloody Kárahnjúkar dam project. „Lost landscape“ Part 1 & Part 2  and more pictures „Cycling trip to east fjords 2006“ Part 1 & Part 2
Location: 64.833417, -15.848694
Weather: Light gust, Calm, cloudy about 3°C

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Storm petrel (Hydrobates pelagicus) is a seabird in the northern storm petrel family, Hydrobatidae. It is the only member of the genus Hydrobates. The small, square-tailed bird is entirely black except for a broad, white rump and a white band on the under wings, and it has a fluttering, bat-like flight. The large majority of the population breeds on islands off the coasts of Europe, with the greatest numbers in the Faroe Islands, United Kingdom, Ireland, and Iceland. The Mediterranean population is a separate subspecies, but is inseparable at sea from its Atlantic relatives; its strongholds are Filfla Island (Malta), Sicily, and the Balearic Islands.
The storm petrel nests in crevices and burrows, sometimes shared with other seabirds or rabbits, and lays a single white egg, usually on bare soil. The adults share the lengthy incubation and both feed the chick, which is not normally brooded after the first week. This bird is strongly migratory, spending the Northern Hemisphere winter mainly off the coasts of South Africa and Namibia, with some birds stopping in the seas adjoining West Africa, and a few remaining near their Mediterranean breeding islands. This petrel is strictly oceanic outside the breeding season. It feeds on small fish, squid, and zooplankton, while pattering on the sea’s surface, and can find oily edible items by smell. The food is converted in the bird’s stomach to an oily orange liquid, which is regurgitated when the chick is fed. Although usually silent at sea, the storm petrel has a chattering call given by both members of a pair in their courtship flight, and the male has a purring song given from the breeding chamber.
The Storm petrel cannot survive on islands where land mammals such as rats and cats have been introduced, and it suffers natural predation from gulls, skuas, owls, and falcons. Although the population may be declining slightly, this petrel is classified by the International Union for Conservation of Nature as being of least concern due to its high total numbers. Its presence in rough weather at sea has led to various mariners’ superstitions, and by analogy, to its use as a symbol by revolutionary and anarchist groups.
See more information at Wikipedia, eBird and Fuglavefurinn.
Largest colony of Storm Petrel in Iceland can be found in Elliðaey Island, near Vestmannaeyjar island, south of Iceland, but they can also be found in small numbers in two other places in south and east Iceland.
When I and Bob McGuire and Marino Sigursteinsson arrived in Elliðaey the 5th of June 2018, we were not sure if the Storm Petrel had arrived. It was almost too early for their breeding season.
So it was a big success when suddenly at midnight the air was filled with flying Storm petrels. I never saw this tiny bird, even though they were all around my head. They flew extremely fast like bats and disappeared in holes in the ground, and in the load wall of the old shelter.
I started recording inside the shelter because it was like hundreds of birds were heavily busy in conversation inside the wall, but outside and behind the shelter was a low lava cliff, named Skápar also with interesting soundscape. So I started to recording with other recorder there too.
Sadly I spent to much time talking in too short distance behind the rig, so most of the recording is spoiled with human talking. It is sad because this fabulous Storm petrel soundscape did not last more than two or three hours before they all flew to the sea again.
The following recording is what is left of the recording without the human chat. So the best part of Storm Petrel is sadly missing. Instead other bird, very similar is common in this recording. It is Leach’s Storm Petrel which is audible throughout all the recording. More info in Wikipedia, eBird and Fuglavefurinn
Background noise is a rumble noise from a trawler. It was almost constant noise all the time we stayed on the island. Even though I did not see any ship around the island, the air was vibrating with this deep rumble engine noise.
It seems like I need to spent much more time in this remote island and record its biological soundscape. It change over the day, every months, spring, summer, autumn and winter. So just 24 hours is not enough. Same as with other nearby islands, which host different bird species and different soundscape.
Quality open headphones are recommended while listening at low to mid level, or in speakers at medium level.

( mp3 256kbps / 27,6Mb )

Recorder: Sound devices MixPre6
Mics: Sennheiser MKH20 AB40
Pix. LG G6
Location:  63.466924, -20.175122
Weather: Calm, misty & light shower, ca 12°C
Listen to the recording Elliðaey part1

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There are two things which are always possible to record almost everywhere, any time and all year around. That is traffic noise and all kinds of wind.
Traffic noise is easy to record, but wind noise is more difficult. Wind is like an instrument or a symphony orchestra. But what makes it even more difficult is that you can´t place the microphone everywhere you like. A „pure and clean“ wind recording may not include a mechanical wind noise from the windshield, cable or the tripod. So location of the microphone rig plays normally a big role. But when the microphone is placed close to ground or a wall it will affect the frequency spectrum, mainly of sound reflection and therefore a phase issue.
It is possible this happened to me in December when I recorded gust over night in the country side, west Iceland. But I am still not sure, because when all the straws on the ground were rubbing each other, they made a sound or a constant noise which was limited to specific frequency range.
There is no other recording I have made which sounds as differently between different headphones and speakers as this one. I have not EQ this recording much, just pulled down the subsonic at 20Hz and slightly lifted 250Hz (+/-100Hz) The microphone was about 30-50cm from the ground. It was very bumpy and because of that I think I was probably not struggling with a phase issue, only the noise from the rubbing straws.
This recording starts very calm, with an „intro“. But suddenly the wind starts to blow and and gets stronger in the third part of this beautiful winter song..
I am used to record exactly on this location almost every time I visit this place so it is interesting to listen how this place sounds six months later, in July. Listen here.
Quality open headphones are recommended while listening at low or medium level.

(mp3 256kbps / 49Mb)

Recorder. Sound devices MixPre6
Mics: Lewwitt LCT540s (NOS)
Pix: Canon EOS M
Location:64.673500, -21.629361
Weather: Calm to breez, around -8°C

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Svartárkot means “Black River Croft” and is a working sheep farm at the southernmost part of Bárðardalur valley in northern Iceland. It lies on the western bank of Svartárvatn lake, at the southernmost point of Fljótsheiði heath, around 400 meters above sea level, at the foot of the Ódáðahraun lava, the wildest uninhabited lava interior of Iceland. To the south, a wilderness extends all the way to Vatnajökull glacier, the largest ice-cap in Europe. To the south and east lie the rugged uninhabitable areas o the highlands, the domains of glaciers and lavafields. A colourful cultural history is to be found further down the valley towards the lowlands. Svartárkot has been inhabited through most of Iceland’s history and can be seen as a symbol for the interplay between humans and nature, human habitation and wilderness. In addition to sheep, the farmers at Svartárkot maintain a trout fishing business by selling fishing licenses and home-smoked trout and arctic char. They are also experienced guides with a vast knowledge of the interior preserved through generations, and lead both hiking tours and mountain jeep excursions(source).
I was at Svarárkot farm in late May 2018, with Bob Mcguire who was collecting bird sounds in associate with the Cornell Lab of Ornithology, Macaulay Library of Natural Sounds. Farmers were busy in lambing and birds in mating, especially Barrow´s Goldeneye. This duck is not common in Iceland. They are mainly found in NE Iceland, around lake Mývatn and at Svartárkot farm, probably because farmers make nesting boxes inside the barn´s walls.
I and Bob spent maybe two or three hours at Svartárkot recording birds, sheep and soundscapes. Just before we were leaving the place, I put up my rig between the lake and the sheep sheds and started recording. The outcome was the following recording.
It starts peacefully in calm weather. Behind the microphones is the sheep sheds and in front is the lake with most of the birds that make sounds in this recording. Nosiest are the Barrow´s Goldeneye with its strange male´s „ticking“ attracting sound. There are also other birds like Raven, White Wagtail, Dunlin, Arctic tern, Common Ringed Plover and Whimbrel. The farmer is driving on four wheeler between the buildings on the farm and suddenly the wind gets stronger until it was almost impossible to continue the recording.
Quality open headphones are recommended while listening at low to mid level, or in speakers at medium level.

(mp3 256kbps / 62Mb)

Recorder: Sound devices MixPre6
Mics: Sennheiser MKH8020/8040 (AB40)
Pix: Canon EOS-M

Location: 65.340929, -17.244718
Weather: Calm up to 10m/s, clear sky, about 12°C

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For a long time I have used Rode NT1a for nature recordings. It is a very good mic to capture the finest details in quiet soundscapes. But at the same time there is something missing in the sound quality, especially when it comes to low frequency and „audio depth“.
Last summer I got interest in IRT cross mic setup, so there was a perfect opportunity to invest in other microphones. There were not many mics to choose from with extra low self noise. Nevaton in Russia makes very interesting low noise & high sensitive mics. But my experience with MC50Quad was it did not capture the finest details of the silence as clearly as NT1a or MKH20. So I decided to invest in Lewitt LCT540s which I got for a acceptable nice price (See comparison)
I built a special shock mount for the LCT540s inside Rycote AE windshields (ORTF WS kit P/N:080210). That AE windshield is wider than normal WS windshield, especially made for stereo rigs so it is very good for large capsule, side address mics like LCT540s. Low handling noise is important for less rumbling wind noise and when it comes to LCT540, it is slightly better than NT1a.
Everything was ready for a field test in late Mars so I followed the silence into the country side. I was lucky with the weather, dry and calm, maybe too calm because it makes the silence too quiet for this field test. Anyway sometimes light gust gently wipes the top of trees and bushes which sounds fantastic in the headphones, moving slowly from left to right. It was much easier to feel the depth of the field with LCT540 than it has been with NT1a.
Nothing interesting was audible until in the early morning, about half hour before sunrise, when two Rock Ptarmigan started to „sing“. First in distance, but suddenly, maybe because of curiosity, they flied closer to the microphones and walked around the rig. The following recording is actually this moment.
It was recorded in IRT cross, which gives lot of opportunities in mixing. It gives me four different stereo recording in to four directions, all in NOS, plus many other versions too with different channel mix. It can be useful when looking into specific soundscape. It is for example possible to avoid traffic noise or other unexpected sounds from one or another direction.
The two first enclosed recording below have go through noise reduction process (above 3Khz). But the last one is a short peace without noise reduction, just as it comes from MixPre6, so you can hear the LCT540 self noise, which is about 2dB higher than in NT1a. It was recorded with 48dB gain and HPF at 40Hz. In post, I only normalize the gain level up to max, which rise the gain about +10dB. I did not change the EQ so audience can hear the sound quality at the low frequency. My feeling is that LCT540 have almost same low frequency quality as the MKH series & Nevaton which is very good
This is two versions of the same recording where I mix four channels differently into stereo. Counting channels 1-2-3-4 clockwise to L-R-Ls-Rs and the second one L-R-Rs-Ls (which is usually normal IRT setup).
This is a „high dynamic“ recording of silence, so I don´t recommend it played loud. It might destroy some speakers (ears too) if it is played too loud without attention.
Good monitor headphones are recommended or quality open headphones while listening at low to medium level.

Recording L-R-Ls-Rs
(mp3 256Kbps / 35,6Mb)

Recording L-R-Rs-Ls
(mp3 256kbps / 35,6Mb)

Short version of recording L-R-Ls-Rs without NR
(mp3 256kbps / 7,4Mb

Recorder: Sound devices MixPre6
Mics. Lewitt LCT540s (IRT cross setup) Running on 70m Sommer Mercator CAT7 S/STP cable
Pix: Canon EOS M50
Weather: Calm, dry, between -2 to +4°C, about 7:30 o´clock

Location: 64°40’23.7″N 21°37’43.7″W

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Imagine, It is 3:30, mid summer morning. You are within five kilometers from the arctic circle and two and a half kilometers from the north Atlantic ocean. It is calm, and dry and the sun which has never goes completely down this night, gives a silk smooth light through thin layer of clouds. The biosphere is remarkable. It is visible everywhere. From bugs in the grass, fish in the brook to the birds in the air or in the field. All living species seems to be busy to live in beautiful harmony with Mother nature,
You are located at Skinnalónsheiði (heathland) which is close to Hraunhafnartangi peninsula, northern most part of Iceland.
Just a few weeks earlier this place was frozen under ice and snow, extremely quiet and almost a lifeless place.
The following recording is quiet, even though it’s biological busiest time of the year. Bird songs and call’s are mostly in the distance, but sometimes something catches the attention, like the wriggling fish in the brook, or different uncommon songs from different bird species.
Background noise is mostly surf from the ocean two and half kilometers away or sometimes swarm of midges.
Many bird species are in this recording. Whooper Swan, European Golden-Plover, Common Ringed Plover, Whimbrel (European), Black-tailed Godwit (islandica), Dunlin, Purple Sandpiper, Common Snipe, Common Redshank, Parasitic Jaeger, Great Black-backed Gull, Arctic Tern, Red-throated Loon, Meadow Pipit, Snow Bunting, Rock Ptarmigan and Great Northern Diver, Great Black-backed Gull, Graylag Goose, Long-tailed Duc.
Another recording was made that same night several kilometers away, nearby Hraunhafnartanga peninsula. Listening here.
Quality open headphones are recommended while listening at low to mid level, or in speakers at medium level.

(256mbps mp3 / 74Mb)

Recorder: Sound devices MixPre6
Mics: Sennheiser MKH20 (AB40)
Pics: LG G6
Location: 66.513116, -16.149781
Weather: Calm, dry, light clouds, 11C°
Recording date: 29th of May 2018

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