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It has been several years since I published a recording from Flói nature reserve. The reason is more or less because of foul weather in recent years when I have had the opportunity to record there.
It was no exception last summer from late April to mid July. It was cold, windy and wet most of the time which is actually the high season for birdsong recording.
I went there on the 3rd of July 2021 and recorded overnight. The weather was calm in the beginning but the wind increased over the night. I was also struggling with increased sea tide and therefore a surf noise from the coast line, actually at the same time when the birds were most active during the dawn.
My mics were Lewitt LCT540s in IRT cross setup. Most of the bird’s activity was in front of channel 1&2. Most „silence“ was in front of channel 2&3 and most of the surf and traffic noise was at channel 4&1.
It surprised me how much traffic was there the whole night. There was almost constant rumble in the air during the ten hours I was recording, except between four and five o’clock in the morning. This noise was much more audible than I remember in my earlier recordings. The reason could be found in different mic setup and mics. Ten years ago I used to use NT1a in NOS or AB, pointing towards the open field and keeping the nearest road and coastline behind. I have also used MKH20 in AB which is less sensitive for these details than large capsule mics.
It takes time to search in this 10 hour long recording for some nice sounding 30 minutes moments. Listening to the whole four channels it starts with heavy traffic noise in all channels, then surf noise. Then traffic noise again until the wind and the sun makes the air so unstable close to noon, both traffic noise and bird activity almost disappear in the wind noise.
But with an IRT cross rig I have many options. I can turn off the channel or channels which are disturbing for the soundscape I am looking for.
The recording below is a very good example of this. Instead of using all four channels and mixing them to stereo, I use only channel 2&3 (NOS 90°/30cm) to avoid the surf noise. The time when it starts is about 04:15 so there is almost no traffic noise, but anyway, the recording starts and ends with some engine noise in the distance.
Quality open headphones are recommended while listening at mid or low level.
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Recorder: Sound devices MixPre6
Mics: Lewitt LCT540s,  NOS 30cm/90°
Pix: Canon EOS R

Location: 63.900944, -21.191958
Weather: Calm to breeze, partly cloudy, ca 5-10°C

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It is rear now a days to discover new places without traffic or engine nose. I found one in June 2019. It was at Fellströnd, in the northwest of Iceland. That means I have natural silence for more than a one hour. It is a south part of a peninsula which only have gravel roads and no shopping service so motorist are normally not driving there for pleasure.
Less human traffic means more biodiversity. It thrives better in places with less farming and fast driving cars. One roadkill can as well mean a death of the whole family. Car covered with smashed bugs means less food for birds… and so on. This is clearly visible and audible in those areas which have „industry“ farming and lots of fast driving traffic.
No traffic, or engine noise, means more natural silence and more transparent soundscape. Therefor it is very interesting to listen to this recordings. It is even possible to hear sheep footsteps far away and detect what bird species are in the area, even far away. In fact it is possible to analyze the situation of the biodiversity.
This is a high gain recording, recorded at +50dB. Gain was then increased in post about +25dB, normalized at -8dB and gently NR.
This is a part of 10 hour recording. This part was recorded between 7 and 8 in the morning at 21st of June.
Many bird species are audible in this recording. Black tailed Godwit, Common Redsank, Whimprel, Red necked Phalarope, Eurasian Oystercatcher, Common Ringed Plover, European Golden Plover, Dunlin, Raven, Redwing, Purple Sandpiper, Meadow Pipit, Geylag Goose, Whooper Swan, Red Throated Diver and Common Eider. I am almost sure I have not counted them all.
You can hear sheep footsteps which was though far away, also birds wing flaps as a low rumble noise.
Quality open headphones are recommended while listening at low or medium level.

(Mp3 256Kbps / 48Mb)
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Recorder: Sonosax SX-R4+
Mics: Sennheiser MKH20 (AB40)
Pix: Canon EOS M50
Location: 65.169836, -22.404601
Weather: Calm, cloudy ca 13°C

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This two midsummer recordings were made around four o´clock in the morning 15th of July 2017 nearby Arnarholt farm in Stafholtstungur, in west of Iceland. It is recorded on two stereo channels with two different microphones because usually every time I recorded in this place the recordings has been disturbed by traffic noise all night long. But somehow for some unexplained reason no car went around nearby road for more than two hours, so I got a wonderful recording this morning.
I placed those two microphone rigs very close to each other and pointed them toward north. Afterwards I could not decided which of those recordings were better so it is yours to decide which you like.
There are many bird species in this recording. Common Snipe, Golden Plover, Whimbrel, Common Redshank, Black Taled Godwit, White Wagtail, Black headed Gull, Winter Wren, Northern Wheatear, Snow Bunting, Rock Ptarmigan, Common Starling, Redwing, Great Northern Dever, Whooper Swan, Graylag Goose and probably other species. Birds like Starling and Redwing are flying between branches in nearby trees.

My favorite microphones for nature recordings are Sennheiser MKH20 an omni-directional condenser microphone and Rode NT1A (slightly modified), a large capsule cardioid polar pattern studio condenser microphone. Both these mics have lowest self-noise available on the market.
I am used to use MKH20 in AB setup which mean the mics are in 40-45cm spaced parallel position (AB40). Then I turn the capsules 2-5° outward which gave me sometimes slightly „wider or more open space feeling“. This setup give me a stereo recording, 360° surround the rig.
My second best omni-directional ultra low noise mic for nature recordings is AT4022 but it does not sound as „musical“ or „natural“ as MKH20, so it is not as often in my tool box,
Cardioid mic detect sound mainly from one direction. so I use NT1A in different circumstances.
Lets say I like to record a birdsong. At the same time it is disturbed with unwanted noise, coming from another direction like waterfall, river flow, surf or traffic noise. I can place the backside of the cardioid mic to the noise source which mean I will get less of the unwanted noise and more of the birdsong.
In last two or three years I have not used NT1A in ORTF or NOS setup for outdoor recordings. But instead use AB4, same as for MKH20, which seems to give less phase error for the sound behind the rig.

These two recordings are NOT good examples for this two different mics in critical circumstances because no car passed by behind the rigs and most of the birds activity was also front of the rigs. But it gives a nice insight how this two different mics sounds and how the self-noise act in „quiet“ nature recordings.
NT1A was inside Rycote Cyclone + fur. MKH20 was inside Rycote WS2 windshield + fur. Both rigs are in AB40 +3°
I use MixPre6 in this recording. There is no doubt, the new Sound devices Kashmir mic preamplifier is ultra low noise and a sweet step forward to get better field recordings.
The HPF was at 40Hz and the gain was at 50dB for NT1A and 43dB for MKH20. The gain settings mainly get this arrangement because then both rigs sounds have equal level in the headphones while I was recording. In post the gain was increased almost 30dB on both stereo channels, up to -10dB.
Specrogram shows „all“ frequencies was bellow 8Khz so to lower unwanted mic self-noise I pull everything above 10Khz down with EQ (-5db @ 11Khz & -30dB @ 15Khz) .
This is a „quiet“ recording which mean you should listen to it at low level in quality headphones or speakers in quiet place.

NT1A recording
(mp3, 256kbps / 50,6Mb)

MKH20 recording
(mp3, 256kbps / 50,6Mb)

Here are two shorter version of this recording but now without high frequency cutoff and the gain level is normalized up to 0dB, so it should be easy to hear the mic self-noise in low quality headphones and PC amplifiers.
It is also easy to notice that MKH20 is covering 360° of the surround soundscape, while NT1A is only covering 180° with less bird songs and other activity.

NT1A. Without high freq cut off, normalized to 0dB
(mp3, 256kbps / 11Mb)

MKH20 Without high freq cut off, normalized to 0dB
(mp3, 256kbps / 11Mb)

Recorder: Sound devices MixPre6
Mics: Rode NT1a and Sennheiser MKH20 (AB40 setup)
Pix. Canon EOSM

Location: 64.673460, -21.629304
Weather: Calm, cloudy, ca. 7°C

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I think I don‘t need to present the nature reserve in Flói in many words. It is a wetland / moors in south of Iceland. I have already published in this blog several hours of „Flói recordings“.
Last spring was cold, wet and windy so I did not spend much time there. But in June, I stayed there for two nights while I recorded several hours of recordings during the nights.
As usual I fell in to sleep in the field during that time, so I did not know what I was recording. Last week when I was searching trough the recordings, I noticed some interesting moments.
At 14th of June the overnight weather forecast was nice and I started to record at midnight. Between 2 and 5 in the morning the wind went down so the field got „quieter“ for far distance sound waves.
I put up Rode NT1 in NOS in the same place as usual and pointed them to north. The soundscape is always spectacular in this place.
This soundscape is probably not what everyone would hear by bear ears. The recording is highly amplified. In this circumstances and Rode NT1, I normally adjust the gain on the recorder between 54-58dB. In this particular recording the gain is increased again in post about +24 dB so the peak level in one moment (at 13:16) reach 0dBf.
Many bird species are audible in this recording like Red throat Diver, Common Snipe, Golden Plover, Dunlin, Whimbrel, Gull, Arctic Tern, Northern Wheatear, Greylag Goose, Whooper Svan, Meadow Pipit and other bird species I have forgotten, or can’t name. Other audible animals like horses and sheep’s are there too.
Background noise is mostly from the Atlantic ocean’s waves along the south coast behind the mics. Then as usual, traffic noise and sometimes a party music somewhere in the county.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level.

Flói 2015. 1. Hluti

Hér er á ferðinni upptaka úr friðlandinu í Flóa frá því á laugardagskvöldi og sunnudagsmorgni 14. júní 2015. Eins og fyrri upptökur úr Flóa sem finna má hér á síðunni eru hljóðnemarnir ávallt staðsettir á sama stað við sömu tjörn norðan við fuglaskoðunarhúsið.
Í upptökunni má heyra í ýmsum fuglategundum. Má þar nefna lóm, hrossagauk, heiðlóu, lóuþræl, spóa, máfa, kríu, steindepli, grágæs, álft og þúfutitling. Þá heyrist lika í hestum og kindum.
Bakgrunnssuð er einkum brim meðfram Suðurströndinni og einkum við Ölfusárósa. Svo berst hávaði frá bílum og partítónlist einhvers staðar í sveitinni.
Mælt er með því að hlusta á upptökuna í góðum opnum heyrnartólum og á miðlungs- lágum hljóðstyrk.

Download mp3 file (256kbps / 60,7Mb)

Recorder: Sound devices 788
Mics. Rode NT1 (NOS)
Pix. Canon EOS M
Weather: clear sky, mostly calm, between -1 to 4°C
Time: 14 June 2015, between 2 and 3 o’clock
Location: 63.900933, -21.191876

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