This is a Parabolic Microphone Mid-Side audio recording performed on May 5, 2021 at the wetland Palude del Busatello near Gazzo Veronese - Verona - Italy.
I used a Do It Yourself system by means of a stereo separation baffle inside a 55 cm parabolic dish, in which I inserted two 10 mm microphone capsules: an Omnidirectional AOM 5024 facing the inside of the dish and a figure-eight Primo EM283.
I used a Tascam DR100 mk3 on M/S position recording. 
Please use a good headphones to appreciate the stereo separation!

Nightingale Mid Side parabola recording

Mid-Side recording in Parabolic Microphone Common Nightingale song

I performed a Mid-Side test by inserting a Primo EM283 figure-eight microphone and a Primo EM 172 omnidirectional microphone into a 53 cm diameter parabolic dish. This is in order to obtain a balanced Mid-Side stereo configuration in the dish. (see also here in Sundcloud in my channel https://soundcloud.com/marco-pesente/mid-side-recording-in-parabolic-microphone-common-nightingale-song).

MID - SIDE EM172 EM283 figure 8 Parabolic Microphone

This morning I recorded a Cicada orni with Hi Sound Evo 4 AOM capsules parabolic microphone. 
The insect was at about 20 meters far from me at an height of about 10 meters from the ground on a chestnut tree. 
Pointing down the dish towards the asfalt surface I noticed the reflection of the sound wave emitted by the cicada. 
Then I recorded in this position, with the dish pointed pointed to a meter from me, down to to the ground at about 90 degree related to the sound source.
The maximum energy of the sound was at about 5000 Hz. 
This is a section of the file, at the beginning pointing directly towards the subject and later pointed down as previously described.
Yesterday I had the same experience with another smaller specie of cicada the Dimissalma dimissa, with a maximum energy at a frequency around 14000 Hz. 
In this case too I obtained the recording pointing the dish directly to the ground, towards the reflected wave.

Cicada orni Air emission- Vs - Ground reflection

AcrocephalusPalustris recorded with a twin mono microphone in a parabolic dish of 35,5 cm diameter. Primo EM172 capsule on the left PUI AOM5024 on the Right channel. There are 6 to 9 dB more signals with the AOM5024 than with the Primo EM172

Primo EM172 Vs. PUI AOM5024 in a 35,5 cm parabolic dish

I performed a Mid-Side test by inserting a Primo EM283 figure-eight microphone and a PUI AOM 5024 omnidirectional microphone into a 53 cm diameter parabolic dish.

MID - SIDE AOM5024 + EM283 figure 8 Parabolic Microphone Blackcap Song

I ran a test with the Tascam X8 to compare the internal microphones with the Clippy EM172 micbooster.com.
The recording level was set at +36 dB in the HIGH position for both channels 1-2 (internal mics) and channels 3-4 (Clippy EM172s). High Pass Filter set to 80Hz for both. To match the signal between the channels, I first increased the channel of the internal mics by + 6dB, then normalized the whole track. To analyze the background noise it is enough to isolate the silent part between one knock and another of the digital metronome. First part of the file with internal microphones, second part with EM172s. File download is authorized.

TASCAM X8 Internal MICS Vs. EM172sClippy - file NORMALIZED in post

Noise test for internal microphones of Tascam X8 Vs. Tascam DR05x.
First half X8; second half DR05x

TASCAM X8 Vs TASCAM DR05x Internal MICs Test

A short and quick test for Zoom F3 and Dodotronic Hi-Sound stereo 2 + 2 AOM 5024 Phantom Power 48Volt stereo parabolic microphone.

Zoom F3 - Dodotronic HiSound Stereo - Nightingale Song

Comparison between Tascam X8 and ZOOM F3 using a matched pair Rode NT1a.
I ran a short test using a digital metronome.
First eight bars with X8, following with F3.
To see the noise level just select a space between one beat and the other of the metronome. The file can be downloaded. The recording levels were the same as by setting the Tascam X8 to a Gain of +27.5 dB in the High position I saw that the signal level is the same between both recorders.

Tascam X8 Vs ZOOM F3 microphones Rode NT1a matched pair

Here Comparison between Tascam X8 and ZOOM F3 using a matched pair Rode NT1a.
I ran a short test using a digital metronome.
First eight bars with X8, following with F3.
To see the noise level just select a space between one beat and the other of the metronome. The file can be downloaded. The recording levels were the same as by setting the Tascam X8 to a Gain of +27.5 dB in the High position I saw that the signal level is the same between both recorders. Not amplified on post.

X8 Vs F3 - Rode NT1a matched pair

Together with Gianni Pavan, of CIBRA - Pavia University, we have developed a parabolic microphone that provides a multipurpose recording system: a stereo separation baffle with two capsules positioned at the focal point of a 53 cm parabolic dish and two other omnidirectional capsules positioned on the edge of the parabolic dish, 17 cm apart each other, separated by a half-sphere of 12 cm in diameter. This way we can get a very directional recording with the parabola and a binaural recording of the surrounding soundscape. By using a 4 channel recorder the two recordings are synchronous and provide complete acoustic documentation of the environment.
The first part of the recording with the capsules on the edge of the parabola, the second part with the capsules at the focus of the parabola.
Two Zoom H1 used simultaneously.
Recorded at a Cattle Egret winter roosting.

Parabolic  Microphone Stereo Baffle Vs. Two Omni Mics on the Edge of the Dish

Test Built-in microphones Tascam X8 Vs. Tascam DR100 MK3 as recorded.
First 5 shots X8; last 5 shots DR100mk3.

TASCAM X8 Vs DR100mk3 Built - In Microphones

Test noise and signal for ZOOM H1n Vs. OLYMPUS LS-P1 using a digital metronome. Practically no difference.

ZOOM H1n Versus Olympus LS-P1

Tested the three ZOOM H1 - H1n - H1essential:
File NORMALIZED 0dB, External microphone Primo MIC Em172.
LOW CUT filter OFF.
48 KHz 24 bit
Digital metronome.

ZOOM H1, H1n, H1e essential - NORMALIZED External Primo MIC Em172.WAV

A quick field test of Zoom H1e.
Here are blackbird calls at the evening roost, immediately followed by the calls of some gray herons nesting on a Cedrus libani and Cattle egret calls, every now and then the call of a female long-eared owl is heard, especially towards the end of the file. In the recording I left a car passing in the back.
On the background an industrial fan engine. 
Zoom H1e Essential recorder, Parabolic Microphone with 1+1 AOM 5024 capsules.
File as recorded, no processing in DAW.
Low cut filter 80 Hz on recorder.
48 KHz 32 bit. 

ZOOM H1e Essential + AOM5024 in Parabolic Microphone

I performed a field recording using the new Zoom H1e Essential by comparing it with the Zoom F3 which features XLR type inputs.
For the occasion I prepared a special stereo baffle to be inserted into a 53 cm diameter parabolic dish. I define this baffle as "Twin Stereo Baffle" as I put two pairs of capsules (four total capsules as matched as possible) in order to have two stereo outputs with two 3.5 mm jack plugs to be connected, one directly to the Zoom H1e, the other using a 3.5mm adapter with two XLR plugs equipped with resistor and capacitor suitable for powering the two AOM 5024 capsules via F3.
Both recorders with Low Cut filter at 80 Hz.
No post processing.
Listening order: first the track with H1e followed by the one with F3, for both recordings.

ZOOM H1e Essential Vs. ZOOM F3 - GreatTit Blackcap Songs

ZOOM H1e Essential - Cetti's Warbler clipped and then recovered with 32-bit recording.
Recording carried out using a parabolic microphone https://www.naturesound.it/
As often happens with Cetti's Warbler, its explosive song causes the recording to clip. In this case I was able to recover the file thanks to the 32-bit float recording of the Zoom H1e Essential. The microphone capsules used are the PUI AOM 5024 inserted in a stereo separation baffle disc inside a 53cm parabolic dish (see in naturesound.it) and they perfectly held the impulsive and strong song without going into distortion.
The file can be downloaded and therefore you can see that by normalizing the first clipped part to 0dB, you obtain a perfectly usable signal, exactly like in the second part of the already normalized file.

ZOOM H1e Essential - Cetti's Warbler clipped - recovered with 32-bit float recording

I recorded the song of the Common Nightingale, Luscinia megarhynchos, using a Sound devices 302 combined with a Roland R05. As a microphone I used a Parabolic Microphone I built as DIY, with a PUI AOM 5024 capsule inside in mono configuration.

Common Nightingale Song - Sound Devices 302 - Roland R05 MONO recording

Nightingale singing with cuckoo who is exploring the place looking for the nightingale's nest.
Tascam X8, Naturesound.it parabolic microphone with AOM5024 stereo capsules. 

Common Nightingale (with Tascam X8)singing with Cuckoo looking for the nightingale's nest

I performed a comparison test between two ZOOM H1 first version, one with an external stereo baffle with 2 AOM5024 capsules and the other with the same AOM 5024 capsules inserted inside the H1 recorder, replacing the original cardioids with these omnidirectional ones.
First part with stereo baffle, the second with the capsules inside the recorder.
This comparison is used to understand if there is a greater stereo separation using the stereo baffle compared to the omnidirectional capsules mounted inside the recorder replacing the original cardioids.
I am aware that a better stereo separation is obtained by keeping the two cardioid capsules inside the Zoom H1, but the noise level is definitely too high for acceptable results in field recordings. At least this is my opinion.
The stereo baffle with its two built-in capsules was connected via the external 3.5mm Plug In Power socket.

ZOOM H1 Stereo Baffle with AOM5024 Vs. AOM5024 capsules inside the H1.WAV

Recording made simultaneously using two Zoom H1 first version; in one H1 I replaced the internal cardioid capsules with two Omnidirectional PUI AOM5024, the other H1 I left with its two original cardioid capsules. First part of the file with the AOM5024, second part with the cardioids. I normalized both parts of the file to -3dB.

ZOOM H1 with internal microphones replaced with AOM 5024 capsules

https://soundcloud.com/marco-pesente/saramonic-ambisonic-sr-vrmic-vs-lineaudio-cm4-with-primo-em200
I performed a simple noise test of the cardioid capsule inside the ambisonic Microphone Saramonic SR-VRMIC, to compare it with the Line Audio CM4 microphone with a cardioid Primo EM200 capsule.
The recording consists of four parts:
1) Saramonic SR-VRMIC as recorded
2) Line Audio CM4 as recorded
3) Saramonic SR-VRMIC Normalized on 0.1 dB
4) Line Audio CM4 Normalized on 0.1 dB

Saramonic Ambisonic SR-VRMIC Vs. LineAudio CM4 with PRIMO EM200

Electronic metronome test to evaluate noise floor. 80 Hz high pass filter on. First part of the file as recorded, second part normalized to -0.1 dB.
First 8 hits with F3, second 8 hits with H1xlr; same for the normalized part.

ZOOM F3 Vs H1xlr First As Recorded - Than Normalized

Electronic metronome test to evaluate noise floor.
80 Hz high pass filter on.
First 8 hits with F3, second 8 hits with FR-AV2.
All Normalized on -3dB.

TASCAM FR-AV2 Vs. ZOOM F3 - NORMALIZED On -3dB

This is a test performed by powering a PUI AOM5024 omnidirectional microphone capsule in four ways:
1) TASCAM FR-AV2 Rode VXLR+ 48V
2) ZOOM H1n PIP
3) TASCAM FR-AV2 PIP 2.5V
4) TASCAM FR-AV2 PIP 5.0 V
The level has been NORMALIZED to 0.1 dB only for the choice 1)TASCAM FR-AV2 Rode VXLR+ 48V.

TASCAM FR-AV2 RODE VXLR+ Vs. H1n Vs. PIP2.5V Vs PIP5V

http://www.naturesound.it/2019/05/04/soundscape/
This entry has been awarded runner up in the Habitat class of the 2012 WSRS Wildlife Sound Recording Society sound competition.
This is a file that I recorded on May 28, 2012 in Italy, in the mountains near Verona, Lessinia, at 1400 meters above sea level. The soundscape is very angle limited because captured with a parabola stereo using a Telinga Universal, were inside I placed a DIY baffle with 3+3 parallel connected EM 172 Primo Stereo microphones.
No processing was done in post production.
The species recognizable are: Turdus viscivorus, Parus ater, Phoenicurus phoenicurus, Cuculus canorus; in the backgroung Fringilla coelebs. Captured holding the parabola by hand, no tripod at all.
These the coordinates: 45.659824,11.085538

BEWARE: the Roland R05 is a digital recorder very FRAGILE both for the 3.5 mm jack and the electronic board, much better and stronger is the Sony M10. This is my opinion after using both recorders.

Lessinia ITALY Soundscape using Telinga Universal and EM172 stereo DIY - Roland R-05

I performed a test of some of my recorders (Sony M10, D50, Olympus LS7, Roland R05 Zoom H1) to compare their internal mics on a passerine bird singer, the Blackcap, very widespread here in Europe.
A simultaneous recording was obtained with all five recorders; the levels were set to have almost the same level on all recorders; fine tuning of levels in post production was required only for the Roland R05 (+3db) and the Zoom H1 (+6db).
The Olympus Ls 7 was enabled for all its three microphones (the two side cardioids and the central one omnidirectional).

Blackcap M10 D50 LS7 R05 H1 Internal microphones TEST

Unlike the daytime song, the phrases are generally short, with longer periods of silence between one phrase and another. In general, the song is less frenetic and the notes are well-articulated.
The singer was recorded at the end of May 2010, near the Palude del Busatello, a marshland located at Gazzo Veronese, Verona, Italy, at approximately 3 AM.
These the coordinates 45.114178, 11.089153.

Nightingale - nocturnal song - Rode NT1a stereo matched pair ORTF spaced- Fostex FR2 Le

Here is an underwater recording of Micronecta sp. scholtzi sound; I recorded it in North Italy  Padana Plain, Busatello Marshland, Verona, on 19 August 2012.
DAT Sony TCD D8 - Hydrophone HTI-94-SSQ http://www.hightechincusa.com/products/hydrophones/hti94ssq.html

Micronecta scholtzi - Lesser Water Boatman - Song - Underwater recording

Here is an underwater recording of Corixa punctata sound; I recorded it in North Italy, Padana Plain, Busatello Marshland, Verona, on 27 January 2001.
DAT Sony TCD D8 - Hydrophone HTI-94-SSQ http://www.hightechincusa.com/products/hydrophones/hti94ssq.html

Corixa punctata - Underwater Sound

Canto emesso dalla cavità tana registrato il 22 maggio 2002 utilizzando un microfono parabolico Telinga Twin Mono.
Può essere confuso col canto del Rospo smeraldino.
Song emitted from the burrow cavity recorded on 22 May 2002 using a parabolic microphone Telinga Twin Mono.
It can be confused with the song of the Green toad.

Gryllotalpa gryllotalpa European mole cricket song Grillotalpa canto

http://www.naturesound.it/2019/04/20/assiolo-allalba/
Assiolo, Otus scops, Eurasian scops owl, singing at down.
palude del Busatello, Gazzo veronese, Verona, North Est Italy.
In the background Blackbird, Nightingale, Blackcap.

Otus scops singing at dawn - Assiolo canto all'alba

Bufotes viridis call - recorded using a parabolic microphone system Telinga PIP 2011 April 06 Villimpenta - Mantova - Italy

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