Feeds:
Færslur
Athugasemdir

Posts Tagged ‘Binaural recording’

IMG_2200

Októberbyltingin var bylting í Rússlandi árið 1917. Hún er kölluð svo vegna þess að hún fór fram í október skv. júlíanska tímatalinu sem þá var í gildi í Rússlandi en samkvæmt gregoríska tímatalinu var dagsetninginn 7. nóvember, og er miðað við þann dag þegar byltingarinnar er minnst. Októberbyltingin var vopnuð uppreisn í Petrograd (núna Sankti Pétursborg) og kom í kjölfar febrúarbyltingarinnar sem hafði gerst sama ár. Októberbyltingin steypti af stóli bráðabirgðastjórn Aleksandr Kerenskij og færði völdin í hendur ráða sem var stjórnað af bolsévikum. Í kjölfar byltingarinnar kom fram nýtt stjórnarkerfi byggt á nýjum hugmyndum sem leiddi af sér stofnun Sovétríkjanna. (Wikipedia)
Að sama skapi þá breytti byltingin í Rússlandi allri pólitík á vesturlöndum, því í kjölfar hennar fékk almenningur auknar kjarabætur, heilsugæslu og betra skólakerfi frameftir síðustu öld.
Vinstri menn á Íslandi fjölmenntu og héldu upp á þennan viðburð í Iðnó 7. nóvember 2017 með skemmtilegri samkomu þar sem haldnar voru hressilegar ræður, kveðið og sungið á víxl í tæpa þrjá klukkutíma.
Að sjálfsögðu mætti ég með upptökutæki og tók upp viðburðin meðal gesta í miðjum sal. Sú upptaka sem hér heryrist eru tveir dagsrárliðir sem áttu sér stað eftir hlé. Annars vegar er það ræða Vésteins Valgarðssonar og svo lokaatriðið þar sem allir sungu Internationalinn, öll sex erindin þar sem Þorvaldur Þorvaldsson leiðir sönginn og frændi hans, Þorvaldur Örn Þorvaldsson, spilar á gítar.
Því miður er hljóðkerfið í Iðnó afskaplega lélegt. Hljómgæðin eru því skelfileg þó upptaka hafi heppnast með ágætum.

October Revolution 100 years anniversary

At the 7th of 2017 many socialists and other left wing folks in Reykjavik calibrated the 100th anniversary of the Russian October Revolution.
The program included inspired speeches, poetry and songs and singalong songs that lasted for almost three hours. This recording contains two of this programs, an Icelandic speech and then singalong song of The Internationale in full version in Icelandic.
I think I need to apologize for the poor sound quality in this recording but it is mainly because of the sound system of the house.

(mp3 224Kbps / 37Mb)

Recorder: Olympus LS100
Mics: Primo EM172 (Binaural)
Location: Iðnó, Reykjavík
Pix: from the www

Auglýsingar

Read Full Post »

IMG_2200

When I use boom in recording I have used Audio Technica BP4025 stereo mic in Rycote windshield. It is not too heavy and it gives me stereo recordings. But very often I have been disappointed with the „musical“ sound quality, so I don´t often get quality ambiance recordings with this setup. Saying that, it does not mean BP4025 is a bad mic. BP4025 has a very low noise floor. It is the perfect mic for special circumstances like where size does matter and for very quiet environment/nature recordings.
DPA4060 is a pretty sounding miniature mic, sold in pairs and much lighter than any original stereo mic on the market. That means it is perfect to use for boom recordings. But because DPA4060 is an omni mic it is necessary to separate the capsules to get stereo. It is done in two ways. Separate the capsules with space (around 40cm) to get time difference, or place them in two sides of some sonic baffle materials.
The BP4025 was in a short Rycote WS2 windshield which has overall length (wide) 34cm. So it was important to place the capsules each side of some baffle material to get acceptable wide stereo.
I end up with a simple „binaural“ project I made out of wooden leftover (see pictures).
I decided not to use silicon artificial human ears because the ears will change the frequency curve at 2,5Khz and 5,5Khz, which means I needed to fix the EQ afterwards on all recordings made with this rig.
The result was stunning. The rig I made was lighter and better wight balanced than previous BP4025 setup. The overall wight is only 750gr (mics+wood baffle+WS2 basked+fur). It also gives me wider „stereo image“. But best of all, it withstands wind- and handling noise much better than previous BP4025 setup.
Following recordings are 4 and were made in three locations. The two first one are waves on seashore, then one from a cliff, 300 m above sea level with seabirds and the last one is from a football game in Reykjavik. All where recorded on Sound devices 744.
All recordings are straight from the recorder. Just cut and paste, fade in and out and then down grade from WAV to mp3.

(256kbps / 29Mb)

The two first recordings are big and then small waves. The mic have fur, HPF is off and gain at 45db. The mics are faced from the beach to the fjords. You will hear car pass by „behind“ the mic. Notice, you will hear a short „drop out“ when it pass. It is because it passes my car which was located on the road side. See location.
In the cliff recording the mic is without fur. It is possible to hear how strong gust sounds on the Rycote basket, but that is anyway much better (or different) than the my previous BP4025 setup. HPF at 40Hz and gain at 45dB. The boom with the mic reaches the cliff edge about one meter. See location.
The last recording is from a football game celebration in downtown Reykjavik. No fur, HPF at 40Hz and gain at 40dB. The mic stood on a boom about 1 meter above the crowds head. See location.

Read Full Post »

IMG_8941

Everyone who has travelled on road no.1 between Höfn and Djúpivogur in the east Iceland know the road at Hvalnes- and Þvottárskriður. These places are a huge mountain landslide with cliffs above and below the road. Many days when the weather is bad, with heavy rain or strong wind it can be dangerous to pass the road trough this landslide. Some days the road is closed.
This road at Hvalnes and Þvottárskriður was built 1981, but before, the road lied through difficult valley, high in the mountain named Lónsheiði.
Until 1981 it was unusual to pass this landslide, even the beautiful coast below.
The north Atlantic ocean surf is heavy on the miscellaneous beach which has beautiful gravel beaches and huge cliffs and rocks.
Just below Þrottárskriður landslide is Stapavík, a beautiful gravel beach with high rock in the middle, like a huge stoned giant or troll. Along the beach are low cliffs where fresh water seeps out between the geologic age and wets the rocks.
The following recording was made near one of this place where the fresh water is dripping of the rock down to the gravel below.
Quality headphones are recommended while listening at medium level.

Lindin í Stapavík

Fyrir neðan Þvottárskriður, austur af Hvalnesskriðum, er nokkuð löng malarfjara sem heitir Stapavík. Þessi vík eða fjara skartar gríðarstórum stapa sem minnir á steinrunnið tröll. Stapavík er meira og minna umgirt tiltölulega lágum klettum og skriðum. Þar má víða sjá ferskt vatn streyma undan jarðlögunum og niður klettana.
Upptakan hér fyrir neðan var tekin upp á einum slíkum stað í júní 2014 þar sem vatnið seitlar niður klettavegginn og niður í fjörumölina. Í bakgrunni, bak við malarkamb, má heyra í þungri úthafsöldunni þegar hún skellur á fjörunni í gríð og erg, eins og hún hefur gert á þessum stað í árþúsundir.
Mælt er með því að hlusta á þessa upptöku í góðum heyrnartólum og á miðlungs hljóðstyrk.

Download mp3 file (192Kbps/31,15Mb)

Recorder: Sound deivices 744
Mics: Audio Tecnica AT4022 (binaural)
Pics: Canon EOS M (see more pictures)
Recording location: 64.476665, -14.492781
Weather: Calm, cloudy, around +12°C

Read Full Post »

IMG_0624

The 14th of September 2014 over 100 people met in a ceremony in Arnarholt, west of Iceland, to introduce the tree of the year. This tree is 105 years old European Larch (Larix decidua) so it is one of the oldest tree in Iceland .
The one hour ceremony included speeches, songs and valid measurements of the tree.
The tree was 15,2 meter high with 2 m circumference.
The following recording does not include the whole ceremony. The problem was that all the speeches were trough megaphone so the sound was awful. But the songs were ok and one speech about history of the tree too. The recording ends with another recording I made after the ceremony under the tree with binaural array and contact mics on the tree bole.

Tré ársins 2014

Í Arnarholti í Stafholtstungum var 105 ára Efrópulerki útnefnt tré ársins þann 14. september 2014. Hátt á annað hundarð manns mættu við hátíðlega athöfn og hlýddu þar á ræður og söng. Þá var tréð mælt með löggiltum hætti og reyndist það vera 15,2 metra hátt.
Meðfylgjandi upptaka er ekki lýsandi fyrir það sem gerðist við athöfnina enda upptakan talsvert styttri.
Menn töluðu þar óspart í afar slæmt hljóðkerfi sem ekki var áheyrilegt. Eftir stóð þó söngurinn og ein ræða þar sem stuttlega var sagt frá sögu trésins og þeim tveimur mönnum sem að gróðursetningu þess komu. Í enda upptökunar má heyra vindinn gæla við trjátoppana og hljóðin innan úr bol trésins tekin upp með „kontakt“ hljóðnemum.
Full lýsing á dagskránni þennan dag er annars ágætlega lýst í Laufblaðinu, Fréttablaði Skógræktarfélags Íslands.
Upptakan er birt með leyfi söngvara.

Download mp3 file (192kbps / 31,2Mb)

Recorder: Sound devices 788
Mics: MKH30/NTG3 (MS config) & MKH20 (binaural) & Aquarian H2a-XLR
Pix. Canon EOS M
Rec. Location: 64.675469, -21.630393

Read Full Post »

____the_Roar_of_the_Crowd_800

Nothing could be further from the heady drama of his opera „Faust“ than Gounod‘s cheerful, melodious „Little Symphony for Wind“. Its infectious nonchalance and easy gracefulness has made it a favorite with amateur as well as professional wind players. Though it was written when the composer was 70 years old and has the formal structure of a classical symphony, ever one of its four movements breathes youthful gaiety and Gallic charm. The second movement, Adagio, is a lyrical, finely sustained melody, mainly for flute. The final Scherzo, with its bright, staccato, syncopated theme, is remarkably „modern“ for its time, and shows that Gounod was keeping a weather eye on his younger contemporaries*.
This recording was made the 23rd of November 2013 with members of Iceland Amateur Symphony Orchestra in Seltjarnarnes church. Keep in mind that the orchestra comprises mostly those who earn their living in occupations other than music so this is a perfect performance.
This is a binaural recording with Sennheiser MKH8020 mounted into foam dummy head. The sound is rather harsh in some mid range frequencies and the reverb may have been better and lasted longer. This might be repaired in post, but I am not interested in such thing. Good recording is more important. I think this poor sound is mainly because the design of the hall (church). Also is the microphone placement difficult to change during the concert. But anyway this stereo recording is a nice example of binaural recording. Normally, headphone is required while listening, but in this recording the instruments in the performance are dancing nicely between the channels so it is nice to listen in both headphones and speakers.

Charles Gounod – Petite Symphonie

Hér er upptaka frá tónleikum Sinfóníusveitar áhugamanna í Seltjarnarneskirkju frá því 23. nóvember 2013. Er þetta lítil sinfónía eftir Charles Gounod sem hann samdi sjötugur að aldri árið 1885 fyrir níu blásturshljóðfæri.. Var það félagi hans og flautuleikarinn Poul Taffanel sem pantaði verkið sem sver sig í ætt við blásaraserenöður Mozarts.
Upptakan er gerð með svoköllaðu “binaural tækni” sem gengur út á að staðsetja hljóðnema í kúlu eða bolta sem líkist mannshöfði. Þannig má oft ná mjög skemmtilegum umhverfishljóðritunum sem oftar en ekki er best að hlusta á í góðum heyrnartólum.
Flutingur blásara á tónverkinu er afbragðs góður, en upptakan hefði alveg mátt vera betri. Miðjan er yfirmótuð á einhverjum tíðnum sem gerir hljóminn svolítið harðan á köflum. Gera má ráð fyrir að það reiknist að stærstum hluta til á eigin tíðni salarins. Þá hefði mátt vera meira eftirhljómur frá salnum. Þarna skiptir bæði salurinn og staðsetning hljóðnemanna miklu máli. En því miður er ekki hægt að finna bestu staðsetninguna á meðan á tónleikum stendur. Það getur því oftar en ekki varið hrein heppni að ná góðum upptökum með einfaldri steriotækni.
Hljóðfæraleikarar gáfu leyfi fyrir vefvæðingu hljóðritsins.

  Download mp3 file  (256kbps / 37Mb)

Recorder: Sound Devices 788
Mics: Sennheiser MKH8020 (Binaural)

Read Full Post »

Accordion concert

Accordion day was celebrated all over in Iceland 5th of May with concerts in many public places all over the country. This was a perfect opportunity to cycle downtown and record a “squeeze box concert”. The concert was held in an open place at Hallærisplan (Ingólfstorg) in Reykjavik center and the players were members of the Reykjavik Accordion Club. In background, mostly on right side, are some bang and rumble noise from skate boards and motorcycles.
This recording was made with “binaural microphones” and Primo EM172 capsules.  There were rather much wind which sometimes disturbed the recording. So -20db was enabled at 20hz  in post.
Best to listen with headphones.

Harmónikudagurinn 5. maí 2012

Um allt land virðist sem þann 5. maí 2012 hafi „harmonikudagur“ verið haldinn  með pomp og prakt. Það kom ekki skýrt fram á heimasíðu harmonikufélaganna en um það mátti lesa á ýmsum öðrum blogg- og vefsíðum. Þennan dag var þó auglýst harmonikuball á Hallærisplaninu í Ríkisútvarpinu.
Það var því kjörið að bruna þangað á reiðhjólinu með upptökutæki og heimatilbúna “Binaural” hljóðnema. Það er því best að hlusta á upptökuna í góðum heyrnartólum.

  Download mp3 file (192kbps / 24,2Mb)

Recoder: Olympus LS10 (24hz/48Khz)
Mic. Binaural (Primo EM172)
Pix: Sony DSC-P120

Read Full Post »

In April 2012 the Premier of the People’s Republic of China, Wen Jiabao, visited Iceland.
On the first day he was driven to the Musical Hall to have a dinner.
On Facebook, people were encouraged to go there and request for free Tibet. I arrived rather late, but right at time when the prime ministers arrived with a lot of security staff on cars and motorcycles.
This recording was a “wind test” for my home made binaural mics with Primo EM 172 capsules. I put them in Rode WS5 foam and the result was very nice.

Frjálst Tíbet

Í april 2012 heimsótti forsætisráðherra Kína, Wen Jiabao, landið. Ekki stóð á mótmælendum til að mótmæla framferði Kínverja í Tíbet. Á fésbók var fólk hvatt til að mæta framan við Hörpu sem og nokkrir gerðu.
Stuttu eftir að upptakan hefst kemur öll hersingin með mikið mótorhjólagengi í fararbroddi en skýst bakdyramegin að inngangi Hörpu. Kínverjinn þurfti því ekki að horfast í augu við hina ógnvekjandi Birgittu Jónsdóttur sem var stödd meðal mótmælenda og kallaði þar í lítið “vasa-gjallarhorn”.
Upptakan er tekin með Binaural tækni og er því best að hlusta á upptökuna í góðum heyrnartólum.

Download mp3 file (192kbps / 14,3Mb)

Recorder: Olympus LS10
Mic. Binaural headphones w/ Primo EM172 capsule
Pix: Nokia N82

Read Full Post »

Older Posts »