Re: Bamboo housing for nature recordings
LOL, Mogami is from there. You?should be able to get it. Also there are little electronic shops in?Akihabara, they will carry similar wire. Although I haven't?been there in 7 years.?
Jules -- Best Regards,
Jules Ryckebusch
214 399 0931
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Re: Bamboo housing for nature recordings
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Re: Bamboo housing for nature recordings
Where are you globally? Best Regards,
Jules Ryckebusch?
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On Jan 22, 2024, at 06:57, Heinz <heinz.hartfiel@...> wrote:
? Thank you both, Jules and Jerry!
Your information was very helpful. I'm currently creating the order and had already a 50V capacitor on the list. The Mouser 3.3uF capacitor you mentioned in your Instructable recommendation has a 22 week delivery time in our area. The Digikey is available!?
What I couldn't find is the?Mogami W2697. I'll look for an alternative.
Thank you again!
Heinz
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Re: Bamboo housing for nature recordings
Thank you both, Jules and Jerry!
Your information was very helpful. I'm currently creating the order and had already a 50V capacitor on the list. The Mouser 3.3uF capacitor you mentioned in your Instructable recommendation has a 22 week delivery time in our area. The Digikey is available!?
What I couldn't find is the?Mogami W2697. I'll look for an alternative.
Thank you again!
Heinz
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Re: Bamboo housing for nature recordings
Jerry gave a great synopsis. I give a component recommendation?in the Instructable. But in essence you what?1% metal film 1/4W resistors. They have been around a long time and replaced the carbon comp ones of my youth. For capacitors, a low leakage electrolytic works great. The key is the voltage rating. If an electrolytic?is charged above its nominal voltage rating it will sooner than later fail. Initially?it will?"leak" and cause all sorts of noise issues. We are dealing with 48-Volts at maximum so the closest higher nominal rating is 63V. Yes, there are 50V ones but price and size differences are marginal.?
Depending on where you are Mouser has these:?
Digikey has these:?
Jules
Thank you for your feedback and all the details! In particular for the link to , which seems to be inspiring and informative when it comes to mic housings.
?
I'm going to order a few balanced PUI pairs and start experimenting with the PiP version and different bamboo housings. I'll keep the group up-to-date about the progress.
?
When it comes to the simpleP48 version and in terms of recording quality, does it matter which kind of resistor or capacitor to use? E.g. MFR versus CFR resistors, aluminum electrolytic capacitor versus ceramic or tantalum, to name a few? There are so many types and vendors, it seems to be a philosophy in itself. Any recommendations?
?
Sometimes I get lost in details. ¡°Keep it simple¡± but not simplistic seems to be a good starting point. Special thanks to the author Jules Ryckebusch for making his Instructables available to the public!
-- Best Regards,
Jules Ryckebusch
214 399 0931
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Re: Bamboo housing for nature recordings
Le 22/01/2024 ¨¤ 06:29, Heinz a ¨¦crit?: When it comes to the simpleP48 version and in terms of recording quality, does it matter which kind of resistor or capacitor to use? E.g. MFR versus CFR resistors, Not much difference in terms of performance. Metal-film may be marginally lower noise when DC is applied, which is the case for Simple P48, and may have more long-term stability and durability. aluminum electrolytic capacitor versus ceramic or tantalum, to name a few? T Quite often, value dictates technology. Capacitors in the 1-100uF range are necessarily electrolytics. Tantalum is a form of electrolytic, but are to be avoided in audio circuits. Very low value types are most often ceramic? Among them C0G/NP0 are very stable and almost distortionless. For typical 10-500nF, film caps are preferrable. High-density ceramic (X7R, Z5U) are good for power rail decoupling, but have hgh distortion in other positions. here are so many types and vendors, it seems to be a philosophy in itself. Not a philosophy. It's the need for adequation. These are broad strokes. YMMV.
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Re: Bamboo housing for nature recordings
Sidebar Reply - Many thanks for your feedback! You might also like .?He is a scientist and researches the synchronous flashing patterns of fireflies almost every year in early summer. It was an honor to contribute some of my river recordings to the light-sensitive videos he filmed. Please enjoy!
I'm not well equipped for harsh conditions but I will give it a try to record the waves and the rhythm of the seaside! I'll let you know when the recording is online.
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Re: Bamboo housing for nature recordings
Thank you for your feedback and all the details! In particular for the link to , which seems to be inspiring and informative when it comes to mic housings.
?
I'm going to order a few balanced PUI pairs and start experimenting with the PiP version and different bamboo housings. I'll keep the group up-to-date about the progress.
?
When it comes to the simpleP48 version and in terms of recording quality, does it matter which kind of resistor or capacitor to use? E.g. MFR versus CFR resistors, aluminum electrolytic capacitor versus ceramic or tantalum, to name a few? There are so many types and vendors, it seems to be a philosophy in itself. Any recommendations?
?
Sometimes I get lost in details. ¡°Keep it simple¡± but not simplistic seems to be a good starting point. Special thanks to the author Jules Ryckebusch for making his Instructables available to the public!
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Re: Bamboo housing for nature recordings
Good Day Heinz.
Sidebar Comment - While I cannot address your technical questions, I enjoyed listening to your recordings and like the bamboo holder design. I suggest a trip to the ocean to record wildlife and waves crashing along the coast. It can be difficult to capture and balance both types of sound. It should make a pleasant outing and provide an interesting subject. Thanks and good luck with the build project.
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Re: Bamboo housing for nature recordings
Welcome. Nice job with the custom shock mount.
"Sound Sleuth looks so simple. Is it really that simple?"
It's really that simple, and in both its PiP and simpleP48 implementations... it's really that great. Mics made with PUI AOM5024 capsules are a no-brainer as a first DIY mic set for field and nature recording. I have a few pairs. The PiP version requires no other circuitry, just connector(s). You really don't need a custom circuit board for the simpleP48 circuit; it's 1 resistor and 1 capacitor per mic, period. You can either solder the components on the back of the XLR connectors, or just use a scrap of common generic perforated circuit board.
That Instructable was authored by Jules Ryckebusch, who's on this group. Among his other Instructables is this one (), this time using directional electret mics.
You have many options for housing and mounting a pair of miniature omnidirectional mics. I will direct you to who has experimented with several different types of housings (using similar Primo EM172 mic capsules). Many of the ideas could be executed in bamboo or other natural structural materials. A dummy head out of a coconut shell?
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Bamboo housing for nature recordings
Hi MicBuilders!
I'm new to this group. Many greetings and hello to everybody!
?
I would like to give it a?try to build a special 'Sound Sleuth Bamboo' version. The aim is to achieve the most natural-sounding recording possible in combination with natural and sustainable materials. Like bamboo! :-) I'm wondering if anyone could give any advice regarding the optimal selection of electronic components. Is the article at??still the way to go? Or are there any improvements or changes I should know about before I start ordering parts?
?
I really love to work with bamboo from time?to time but I'm not so?familiar with?electronic?circuit board? design. Sound Sleuth looks so simple. Is it really that simple? How is the recording quality? To give you an idea of what the?sleuth bamboo version may (or better not) look like, I would like to send you some pictures of a prototype bamboo mic holder that I built two years ago and that has served me well. The holder can be attached to a long bamboo pole if necessary,?to record closer to the tree top. The orange strap is a replacement strap for an 8mm film projector. which was not expensive and works just fine. The microphone is a Sony ECM-678 that I found in a junk corner of a reuse store with a 'No tone' sticker on it. It works well again.  
My image of the mic housing for nature recordings is a kind of bamboo blip(upright), which can be attached to bamboo poles to record more close to the roof top without disturbing the environment too much. Perhaps leaning against a tree and fastened. Available recording devices: Sony PCM-M10 or USB powered audio interface with phantom power.
If you are interested in listening to sounds I recorded, you can find some on the YT-channel I recently started at:??(created?for fun...no monetizing...no commercials...).?
?
In case you have any questions, don't hesitate to drop me a note. Or if you need any information about bamboo.
As for the design of the bamboo housed microphone circuit board, it would be great if someone could point me in the right direction.
?
Many thanks!
?
Heinz (amateur photographer, field recordist, hobbyist, former SysEng...respecting the diversity of nature...)
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Re: 1st order ambisonic mic utilizing both front and back LDC diaphragms
Of course to go with the tetrahedral cardiod array, you could use the TSC-1 LDC from JLI since they are single diaphragm.
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Re: 1st order ambisonic mic utilizing both front and back LDC diaphragms
That is awesome! I look forward to seeing the new Instructable. I have a contact at Ningbo Electroacoustics in China and bought one of their last year. It is a clone of the old AKG C426B. That body might work, or something similar. Or as I mentioned earlier some of the many U47 bodies might be large enough. The challenge is not so much the body itself, but the PCB rails inside!
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Re: 1st order ambisonic mic utilizing both front and back LDC diaphragms
My challenge is the body to hold them as well. I¡¯m going to design a custom PCB for multi channel OPA circuits ?? Best Regards,
Jules Ryckebusch?
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On Jan 15, 2024, at 08:36, Mark Day <neowalla@...> wrote:
?On Mon, Jan 15, 2024 at 09:02 AM, jack wrote:
Nevaton VR mic
Wow, I have not seen this mic before. This is exactly what I want to build, and after seeing the price of the Nevaton, building my own makes sense. Just have to figure out if I can get it all to fit into one of the U47 bodies on Aliexpress.
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Re: 1st order ambisonic mic utilizing both front and back LDC diaphragms
On Mon, Jan 15, 2024 at 09:02 AM, jack wrote:
Nevaton VR mic
Wow, I have not seen this mic before. This is exactly what I want to build, and after seeing the price of the Nevaton, building my own makes sense. Just have to figure out if I can get it all to fit into one of the U47 bodies on Aliexpress.
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Re: 1st order ambisonic mic utilizing both front and back LDC diaphragms
You can do this with three dual diaphragm LDC¡¯s at this point you don¡¯t need a tetra array you do X, Y, and Z axis. Google ¡°native B format ambisonic array¡± ? You still have the fact that things aren¡¯t fully coincident. This project is actually on my ¡°to do list¡± although I have a few other things ahead of it.? Best Regards,
Jules Ryckebusch?
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On Jan 15, 2024, at 07:45, Mark Day <neowalla@...> wrote:
?Hello everyone,
I have been bouncing an idea around in my head and wanted to throw it out to the collective wisdom of the group and see where it goes.
I built Jules' ambisonic mic from his and it is a great mic. But I would like to design one that uses large diaphragm, externally polarized condenser capsules, and takes advantage of both front and back diaphragms.
I'm thinking of a combination of the "multitrack microphone" idea, like , but with enough capsules for 3D first order ambisonic.
I spoke a bit with Arienne about using her ?
Initially I was just thinking of 4 cardiod capsules in the tetrahedral array, but she suggested with dual diaphragm capsules, I wouldn't need four of them.
I have read through the Springer ambisonic document but can't figure out how to arrange dual diaphragm capsules to get the correct alignment for ambisonic pick up. Any ideas?
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Re: 1st order ambisonic mic utilizing both front and back LDC diaphragms
You can sort of make an ambisonic mic using dual diaphragm capsules in native B-Format arrangement of three orthogonal fig 8 capsules and one omni. The trouble is the capsules need to be perfectly coincident, which is impossible with four capsules. Horizontal B-Format is easier, with a blumlein pair of fig 8s and an omni but still not perfect.
For A- Format, single diaphragm cardioids would be fine. A bit like the Nevaton VR mic, but I think that uses edge terminated CK12 type capsules.
J
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1st order ambisonic mic utilizing both front and back LDC diaphragms
Hello everyone,
I have been bouncing an idea around in my head and wanted to throw it out to the collective wisdom of the group and see where it goes.
I built Jules' ambisonic mic from his and it is a great mic. But I would like to design one that uses large diaphragm, externally polarized condenser capsules, and takes advantage of both front and back diaphragms.
I'm thinking of a combination of the "multitrack microphone" idea, like , but with enough capsules for 3D first order ambisonic.
I spoke a bit with Arienne about using her ?
Initially I was just thinking of 4 cardiod capsules in the tetrahedral array, but she suggested with dual diaphragm capsules, I wouldn't need four of them.
I have read through the Springer ambisonic document but can't figure out how to arrange dual diaphragm capsules to get the correct alignment for ambisonic pick up. Any ideas?
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Re: Reducing the sensitivity of electret capsules with built-in fet
This is the challenge with built?in FET electrets. I have successfully?used the?TSB2555B with a 220pF capacitor across the capsule as a pad. THey make excellent drum mics. This works great for snares, toms and hi hats.?Overheads actually don't?need a pad. I am using my OPA circuit and the impedance buffer, which replaces the fet and associated circuitry. It is not as easy a solution as what you are looking for, but they sound great. See this for how it works:?
Jules
To be more specific, my goal is to have a microphone that is closer in sensitivity to "instrument" mics so I can use it at least as an overhead over drums. As it is now, it's pretty much unusable even with the PAD activated on the preamp. Simply the microphone output is too hot.
-- Best Regards,
Jules Ryckebusch
214 399 0931
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Re: Reducing the sensitivity of electret capsules with built-in fet
Since you already have a 3-wire capsule, the simplest solution is
to use the FET as a source-follower. It would decrease the overall
sensitivity and keep the max SPL. Even then you may have to use
the preamp's pad.
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To be more specific, my goal is to have a microphone that is
closer in sensitivity to "instrument" mics so I can use it at
least as an overhead over drums. As it is now, it's pretty much
unusable even with the PAD activated on the preamp. Simply the
microphone output is too hot.
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Mark Day