Dipole speakers to the activities

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• GAIA Dipole Loudspeaker System
• Long-Term Musical Training Alters Auditory Cortical Activity to the Frequency Change
• 11T Dipole Technical Meeting #14
• IEEE Santa Clara Valley APS Chapter
• Past Research Seminars and Activities
• Schumann Resonance
• 4 Speakers Antenna Bluetooth Boat Radio Stereo Kit MP3/USB/FM/AUX/Ipod Radio
• Loudspeaker
• Speaking modifies voice‐evoked activity in the human auditory cortex

WATCH RELATED VIDEO: Surround Speaker Types: Monopole, Dipole \u0026 Bipoles - Which To Choose?

GAIA Dipole Loudspeaker System

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You should upgrade or use an alternative browser. Magnepan Needs Your Help: Thread starter TitaniumTroy Start date Nov 29, Prev 1 2. First Prev 2 of 2 Go to page. Burning Sounds Senior Member. Durham, UK. Those don't look like Peter Gunn's work to me. And he generally steered clear of the ribbon-tweeter models anyways. But, a nice looking set of speakers with LX dipole woofers mated. I imagine that setup sounds pretty good, if integrated properly. Click to expand Joined Jun 13, Messages Likes MRC01 said:.

Producing bass from an array of small drivers instead of a single big driver is not a new idea, nor is a conventional driver set up as a dipole. But getting it to work together well still requires some engineering. Even their mid-sized model, the 3. They are large because they have limited excursion, but large surface area drivers at moderate SPLs are barely moving, which reduces distortion.

Most of the panel's size is dedicated to bass; if the panel only did midrange on up it would be less than half its size, so what Magnepan is doing here makes sense if you want a smaller speaker. But I don't see how a smaller speaker solves the problem of making them work in small rooms. They sound best in a medium-large room, placed a good distance away from the walls. I don't see how they could sound good in an apartment, condo or other small room.

Burning Sounds said:. What bothers me is that Wendell Diller seems to think this is so innovative that Magnepan can get a patent. Deleted member Guest. The patent isn't on combining a dynamic dipole woofer array with a planar and DSP.

Anyone can do that. I was sufficiently involved in the development to know what is being patented, and it's certainly innovative enough to be patentable. Not sure what you mean by hand-waving, since the innovation is a real one.

Which isn't to say that marketing didn't contribute to the decision to patent -- hybrids have a bad rep, and Magnepan wanted a way to say "this is different. For that reason, I doubt that they'll disclose if they don't file for a patent. Finally, the third reason was that a provisional patent would allow them to take the prototype on tour. But since they're taking it on tour and AFAIK haven't yet filed the patent, that presumably is no longer a consideration.

Joined Aug 9, Messages Likes MRC01 Major Contributor. One clever tweak that someone just mentioned in another thread: The issue here is the path length of the backwave -- ideally, you'd have about a 20 ms delay approx 10' , but in practice, they start to work nicely at about 5'. Basically, they develop more depth as you move them out further from the wall. So -- angle the speakers so the backwave strikes the side walls at the an angle so that it reflects to the center of the front wall.

Maggies have another constraint on toe angle: the tweeter should be about 1" further from the listener than the center of the panel - for proper phase. That said, any toe angle makes the back wave distance traveled greater than the speaker's distance directly to the front wall in front of the listener, behind the speaker.

However, this discussion treats the bass like it's a laser bouncing around the room. I doubt the bass frequencies are that directional, even from a large panel dipole. Their wavelength is bigger than the panel dimensions 50 Hz is roughly 21 feet , so bass should be roughly line source propagation, and shouldn't that make the toe angle less important? Last edited: Dec 16, Measuring at the listening position, the highest reflection level shown in an extended Impulse Response is about 25dB below the direct sound as I interpret the readings , in my non-anechoic room There are JBL LSR adjacent to the mains.

Their room reflections are more numerous, and as high as dB relative to the direct sound. Spatially, the dipoles sound more precise, the cones less distinct. I don't listen to the JBLs critically. They distort early at higher listening levels. But I use them all day long for TV and Radio and other casual listening. Impulse measured at the listener position for my 3.

Your reflections look to be at only RayDunzl said:. View attachment Unsmoothed Frequency Response over the dipole range: I've been told to "ignore" this, it is said I can't hear it, but, I hear something. Main dipole bounce off front wall at Hz, nd multiples more or less. The panel crosses to the cone woofer at Hz, so that is chosen for the low end here.

View attachment Measured nearfield, the JBL does not show that hash, so, I infer it must be room reflections. Green with bare walls, red with diffusion:. Yes, and the timing correlates to front-side wall reflection distance. But the room sounds too dead for my taste when I also damp the side walls. The CSD shows it's more or less evenly distributed across the spectrum. Have you tried diffusion on the front wall, at the point at which it reflects to the side wall? That should reduce the amplitude of the sidewall reflection without making the room too dead No, but I'll add this to my list of things to try.

The room sounds fantastic but there is always room for improvement. Gotta be careful with that. I've seen situations when they do something like this, get mixed reviews and change something to address it, and void the provisional filing you have to have everything in the provisional that will be in the utility patent. One was petition to make special, since it dealt with security of the US and was wanted by a branch of the fed. But we were warned about the requirements for prior art searches and how that can destroy any IP protection.

We then mentioned the provisional and the Verizon as well as Softbank one of our investors again mentioned the limitations that a poorly done provisional can impose - to the point of invalidating the IP itself. Also note - I recently had an interesting conversation with two drunk patent attorneys that worked at the patent office I'm in D. Quite fascinating and eyeopening on how the US patent system is being changed to favor first to file it changed.

And I hope they did a foreign filing too, since they can knock foreign rights by showing it for sale For instance, they now publish applications prior to grants. However, that is not recommended because of the First Inventor to File rule [include link]. Just remember that if you start your marketing efforts before filing a patent application, worldwide patent protection is generally waived see Figure below. If you decide that you need worldwide patent protection after you have already started your marketing activities, then you need to understand what you can and cannot get at this point so contact a patent attorney.

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Long-Term Musical Training Alters Auditory Cortical Activity to the Frequency Change

Try out PMC Labs and tell us what you think. Learn More. The voice we most often hear is our own, and proper interaction between speaking and hearing is essential for both acquisition and performance of spoken language. Brain Mapping —,

11T Dipole Technical Meeting #14

The program brings together established manufacturers of innovative payment solutions RFID technology has the potential to improve speed and efficiency across the entire supply chain. One of the technologies that have really started to significantly impact the supply chain Both companies are pooling their strengths to make warehouse and production processes All you need to do is to register to get your personal log-in. All Users registered on the Think Wireless IoT portal simply use the login they have already created. If you are interested in a participation as a speaker, As early adopters of the

IEEE Santa Clara Valley APS Chapter

Schumann Resonance. By intensity, they are not constant, but vary according to the intensity of the electrical atmospheric activity. These waves are amplified in periods of active thunderstorm activity decreased in periods of calm, but never disappear completely. Impact on them has and the intensity of solar activity.

Past Research Seminars and Activities

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Schumann Resonance

Directional character and noise cancellation is of increasing importance in open-air events and is also known to help produce sound more accurately in reverberant environments such as concert halls and sport arenas. The key feature of Passive End Fire Technology compared to prior ways of obtaining directional low frequency reproduction is considerably higher acoustic output in front of the speaker system with exceptional transient capability. A single enclosure bass loudspeaker systems typically have a very low directivity because of the large wavelength which is to be radiated to produce sound in bass region which equals wavelengths from 10m to 3m. To have a directional character comparable to these wavelengths the enclosure and particularly the radiating surfaces need to be around the same size which would make them difficult to carry or install in most environments such as indoors or limited space outdoor facilities. There are several approaches already known which can be used to improve the directivity of sound sources. One option is to use open back enclosure or have two separate sound sources in which case one sound source radiates to listening direction and other sound source to the opposite direction. When inverting the polarity of the sound radiating opposite direction with addition of delay one can create directional radiating character.

4 Speakers Antenna Bluetooth Boat Radio Stereo Kit MP3/USB/FM/AUX/Ipod Radio

A loudspeaker or speaker driver , or most frequently just speaker is an electroacoustic transducer , [1] that is, a device that converts an electrical audio signal into a corresponding sound. The speaker driver can be viewed as a linear motor attached to a diaphragm which couples that motor's movement to motion of air, that is, sound. An audio signal, typically from a microphone, recording, or radio broadcast, is amplified electronically to a power level capable of driving that motor in order to reproduce the sound corresponding to the original unamplified electronic signal. This is thus the opposite function to the microphone , and indeed the dynamic speaker driver, by far the most common type, is a linear motor in the same basic configuration as the dynamic microphone which uses such a motor in reverse, as a generator.

Loudspeaker

RELATED VIDEO: Surround Sound REAR Speaker combinations for 5.1 and 6.1 and 7.1 Atmos - Bipole. Dipole, Monopole

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Speaking modifies voice‐evoked activity in the human auditory cortex

Her main research area is space plasma physics based on data analysis from satellites and ground-based measurements. She studied plasma transport and acceleration in the magnetosphere, magnetosphere-ionosphere coupling, solar wind magnetosphere interaction, substorm and storm dynamics. Her educational training was at the University of Tokyo, Japan. She is the author or co-author of more than papers in peer-reviewed journals. Search Options. Skip to main content Press Enter. Sign in.

User Name. Remember Me. CAA Public Events The CAA hosts at least 12 Saturday Public Observing events featuring a guest speaker that is followed—weather permitting—by celestial viewings through telescopes at the facility.