Feeds:
Færslur
Athugasemdir

Posts Tagged ‘Hljóðnemi’

IMG_2200

It is not everyone who knows that when recording the finest detail in natural silence a large-diaphragm condenser microphone can be much better choice than a small-diaphragm condenser microphones.
But there are just few microphones which can fit into this category because they must have the lowest noise possible on the microphone market. Of course it is possible to use a noise reduction software but that will never give as good of a result as recording with the best separation between signal to noise ratio. Many microphones have very low noise, but are not sensitive for the finest details, so low noise number in manufacturer specification is not telling you everything.
So what microphones are the best to record fly’s footsteps?
For a many years Rode NT1a has been the best microphone in this category. But now we have at last two other microphones to choose. They are Lewitt LCT540s  and Rode NT1. All these three microphones are almost equal when it comes into self noise, but they are slightly different by characteristics. Rode NT1a is extremely well focused on midrange <8Khz so for most natural sounds they can give a stunning result. But for whole natural soundscape they sound rather flat and without depth, I guess mainly because NT1a has a poor low frequency response. It is also very sensitive for handling noise so using NT1a outdoor in a windshield is very difficult.
Rode NT1 is an improved version of NT1a. Anyway it is not as well focused on the mid range, but instead it sounds slightly more natural with better low frequency response and has also less handling noise.
I recently discovered Lewitt LCT540s which sounds overall fantastic. Different from NT1 and NT1a which is mainly good for voices and spoken words, the LCT540s sounds very natural for everything, as for quiet open natural spaces and for music. It is even possible to hear the depth of the field in all sound pressure levels which is not usual with many other microphones.
I think many are curious how this large capsule withstand humidity. I can only say, in Iceland humidity is not a big problem, I just remember one time I had some strange noise in NT1a, But that was in a bog after several hours in fog and rain so the windshield was soaking in water.
This comparison is mainly focused on LCT540s and NT1 while they sound so close. Their main difference is the output sensitivity which is about +7dB higher in LCT540s than in NT1. MKH8040 is in other hand just for comparison, to show the difference between a small and large diaphragm microphones and how they react in quiet environment.
This recordings was made in 50m2 garage in the countryside. This recording contains mainly two ticking clocks, both sides of the mic rig, also a buzzing fly and a mouse jumping somewhere in the garage. Outside is a traffic in a distance
If you interest how NT1a compare to LCT540S, then you can read and listen to this older blog post HERE

If the media player doesn’t start to play, please reload this individual blog in new tab or frame

First three audio samples are straight from the recorder at 50dB gain, so it sounds in very low level. *

Sennheier MKH8040

Rode NT1

Lewitt LCT540S

Same audio samples again but with +24dB added gain to the original recording, combined 74dB of gain. *

Sennheier MKH8040

Rode NT1

Lewitt LCT540S

Audio samples goes through 80Hz HPF and normalized up to 0dB which increased the gain on MKH8040 about +16dB, NT1 about +14dB and LCT540S about +9dB *

Sennheiser MKH8040  See spectrogram

Rode NT1  See spectrogram

Lewitt LCT540S   See spectrogram

See the whole picture gallery

* All audio samples above are mp3 at 256kbps 44kHz.
Original recording at 24bit/48Khz on Sonosax SX-R4+ & SX-AD8+

See a windshield solution for Rode NT1a and Lewitt LCT540s

Read Full Post »

Það var líklega um hvítasunnu 1985 sem við fórum nokkur saman í tjaldútilegu að Laugarvatni. Að sjálfsögðu hafði ég með mér Sony TC-D5 upptökutæki og ME20 hljóðnema. Þegar klukkan var farin að nálgast 4 að morgni rölti ég til suðurs frá tjaldsvæðinu austur af Laugarvatni og hóf upptöku líklega um 500 metra frá veginum. Á meðan á því stóð steinsofnaði ég á milli þúfna.
Hér er á ferðinni mjög lágstemmd upptaka sem alltaf hefur verið í miklu uppáhaldi hjá mér. Fyrir mér sem borgarbúa, er þessi samsetning fuglasöngs ein sú besta sem völ er á.  Mér hefur oft gengið illa síðustu ár að ná hljóðum í spóa án þess að hann hafi gefið frá sér viðvörunarhljóð. Sama gildir um vængjaþytinn í hrossagauk. Hann er ekki að finna hvar sem er.  Hér eru bæði spóar og hrossagaukar í sínu besta skapi en á móti virðist sem ég hafi verið mjög nærri hreiðri músarindils. Hvell viðvörunartíst frá honum skera svolítið í eyrun. Ekki síst þar sem upptökutæki þessa tíma ráða ekki vel við þessa háu tíðni. Músarindillinn skoppar hér á milli greina í lágu kjarri sem þá mátti finna á einstaka stað á þessu svæði. Heyra má í öðrum fuglum eins og þröstum og hröfnum. Tekið var upp á TDK MA90 kassettu. Er það líklega henni að þakka að upptakan hefur geymst svona vel í öll þessi ár. Öll upptakan er nú yfirfærð í 24bita og 48Khz.
Myndin er frá Laugarvatni og frá svipuðum tíma og þegar upptakan fór fram. Upptökustaðurinn var nærri kjarrinu sem sjá má lengst til hægri á myndinni. Á myndinni má líka sjá gamla gufubaðið á Laugarvatni, sem var alveg einstakt á heimsvísu, en sauðheimskum kapitalistum tókst að rífa það rétt fyrir hrun. Þeir höfðu hugmyndir um að reysa þar andstyggilegt nútímabaðhús svo hægt væri að féfletta almenning með einhverjum “2007 glæsileika”. Vonandi hafa heimamenn rænu á því að endurreisa gömlu gufuna svo hún verði aftur aðgengileg almenningi.
Sækja MP3 skrá (192kbps / 23Mb)

Read Full Post »