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The Schumann ELF Generator


This project was conceived out of curiosity and its relevance in audio applications. We have decided to investigate Schumann Resonance and Quantum Resonance. We think the technology contained within our device is considerably different from other devices on the market to warrant development. How different is it? To find out more, read on…

What is Schumann Resonance? (from Stanford University website)

In first order approximation, the Earth-atmosphere system can be seen from an electromagnetic point of view as a radial shell of three layers of conductivity. The Earth and the ionosphere in about 100-150 km height appear as a perfect conductor with the air of negligible conductivity in between. They form a spherical shell of conductivity, denoted Earth-ionosphere cavity, in which electromagnetic radiation is trapped. Lightning strikes within the troposphere radiate energy into this system and the waves are traveling around the Earth. In the case of constructive interference, Earth-ionosphere cavity resonances are excited in the frequency range of 6-60 Hz.

What is Quantum Resonance?

"Quantum Resonance" may not be the most appropriate name for this device function, it has nothing to do with Quantum Mechanics  and such. But it is the coined term used in hifi circles. The correct description should be Magnetic Field Stabilizer (MFS). The effective frequencies are largely related to our AC power supply frequency  (50hz in Singapore) and its harmonics. A professional MFS would cost a bomb and require specialized setup, mostly used to stabilize electron microscopes and such, and is not generally available to the consumer market This device uses the flooding technique to achieve some of the benefits economically. A MFS does not "shield" the devices in its field, it simply allows them to work better under a non-varying magnetic field, just as a compass needle not wavering under magnetic influences.

Circuit Description

A microprocessor generates the required waveforms using Digital Signal Processing. This is followed by a half-bridge switching amplifier driving the output antenna.  There is a knob for adjusting the power output. Another knob selects between SR (Schumann Resonance) mode and QR (Quantum Resonance) mode. A large analog meter shows the attenuation range calibrated in dBm. The circuit requires a few voltages, supplied externally from a single power adapter.

The Antenna

The Extremely Low Frequency (ELF) spectrum comprises of electromagnetic waves in the 3~300Hz region. Conventionally, a huge magnetic antenna is required to pick up or generate these frequencies, which is not feasible for this project. The Schumann ELF Generator sidesteps this requirement by using a small magnetic antenna together with DSP to generate these frequencies, and does it quite efficiently.

SR mode

Schumann Resonance is characterized by a 7.83hz fundamental pulse and its related harmonics. The device generates these  pulses as a Quasi-Sinewave approximation which contains the harmonics as well. By our reasoning, it should affect living organisms rather than electronics.

QR mode

Selecting this mode produces the required magnetic field by flooding, as with other "Quantum Resonance Technology" devices. This field is supposed to blanket the varying magnetic fields present in our surroundings, primarily from our utility supply. This should have direct impact on electronics.


The Schumann ELF Generator has been deliberately made to look and feel analog-like in use. It reminds us that audio is predominantly analog even as we use digital means to achieve it. Make no mistake: the internal circuitry is  packed with more digital technology than you would expect. Fans of a certain brand will immediately recognize the familiar design.

Specifications at a glance (Prototype)

User interface:

SR/QR generation mode

Intensity control: 0 to -60dBm

            Analog meter display

Physical specifications:

            Dimensions: 6”W*8”H*4”D

            Weight: ~1.5kg

Electrical specifications:

            Field strength: Max 30dBuA/m

            Field Type: Magnetic(H) field

            Rating: 12v 1A dc adapter


Sneak preview:

(more coming soon!)

Schumann ELF Generator White Paper

Ken Ng, 12/2/11

Design Goal

The design goal for the Schumann ELF Generator was to develop an ideal interface to the outside world through the application of technical advances in digital circuits and antenna design. This device has the following functions:

  • An Extremely Low Frequency (3~300hz) artificial waveform generator
  • A retro analog user interface
  • Mode selection and output attenuation

These goals where to be achieved through the application and use of optimum solutions for:

  • Digital Signal Processing
  • Proprietary antenna design
  • Microprocessor driven

The goal of designing the Schumann ELF Generator has been met with the unique combination of solutions called out above. Details of these solutions will be described below.

Digital Signal Processing

We found in our development that to properly generate the required frequencies, it was necessary for the signal to first contain the full harmonic structure of the signal. The signal required is first analyzed from the frequency spectrum and translated to a time-domain signal through the application of Fast Fourier Transform. We used a fast microprocessor with hardware-optimised calculation to do this translation. The antenna output is captured by our resident HP/Agilent DSO6014A analyzer using a pickup antenna.

The time-domain waveform (lower trace) shows what the waveform leaving the antenna looks like, and the fundamental Schumann frequency of 7.8Hz is measured. The FFT spectrum (upper trace) shows the frequency components 7.8, 15, 24, 29hz and so on. Due to limitations in our algorithm and antenna, we cannot fully mimic the actual Schumann Resonance spectrum. However, the Schumann ELF Generator comes closer than any other device known (and measurable) to us.

Using the similar technique, we can reproduce other types of waveform, such as those produced by Magnetic Field Stabilizers.

Proprietary antenna design

The proprietary antenna is the heart of the entire design. Traditionally, a huge antenna spanning a few kilometers long or a huge coil with millions of turns of wire is required to pick up or generate ELF frequencies, which is impractical for a device this size. We had to reduce the antenna size to fit into the enclosure. We used a small magnetic antenna for this purpose. We first alter our time-domain signal from the DSP stage by performing another level of DSP before feeding the amplifier stage. The resulting waveform that leaves the antenna is transformed to resemble the original time-domain signal.  The best way to explain this without revealing our technique is by using encryption theory. We first send a signal through the antenna and measure the waveform to get our transform (key). If our message (signal) is first encrypted (DSP stage 2) then sent to a known decrypter (antenna), we will get back our original message (signal).

The result is a very compact and efficient antenna, but it can only work for this particular combination. There is no magic as to why this works. We cannot reveal it but those versed in EM theory will know that it is possible.

Microprocessor driven

The Schumann ELF Generator would have been impossible to develop without a microprocessor as the algorithms determine the waveform shaping for the antenna to work its magic. Given the firmware is upgradable, there is also ability to include other functionally and waveforms. This makes the Schumann ELF Generator a very powerful device which is infinitely upgradeable despite its deceptively simple exterior.

The Schumann ELF Generator has actually gone beyond our original expectations, achieving performance levels that we only dreamed could be possible, especially for such a compact device. The Schumann ELF Generator opens new possibilities for an audio accessory component.


Why a Schumann Resonator? Don’t we have enough of those already?

Many people do know the significance of Schumann Resonance and its effects, but unfortunately their implementation is less than perfect. Some designs simply couple simple pulse generators such as the venerable 555 timer to what looks like an antenna, with no proper understanding of the mechanics of wave propagation and antenna design. These pulse generators cannot give us the correct harmonic structure of the waveform we want. Our background is in RF systems and we design our systems using EM theory. Our antenna designs obey the laws of classical physics and can be described in parameters such as efficiency, polarization, gain, and impedance. Our goal from the start was to develop a device that produces a measurable result, not one that can only be “felt”.

How is it possible where others couldn’t do it?

The Schumann ELF Generator adopts a proprietary antenna that works only in combination with DSP to generate the required waveforms. This gives it good efficiency from a compact size. Using a suitable pickup antenna and test equipment, the signals can be readily measured. To protect our intellectual property, we cannot describe it in detail. But skeptical individuals are invited to witness the measurements first-hand at live demonstrations. Like we always stress: It’s not magic, just physics!

Is this snake oil?

Schumann Resonance and Magnetic Field Stabilizers are based on scientific research which can be found liberally on the internet. We are not at liberty to doubt others’ findings, but rather the devices that claim to do what they do. Our device trumps others in a particular area with no reasonable doubt: Measurements don’t lie!


So what can I expect?

We propose the effect of the Schumann ELF Generator to be a bit like pheromones. You do not realize its presence immediately but it grows on you. We noticed the soundstage gaining density, that seems to envelop the listener more. We must say this effect is quite unique and cannot be achieved with other kinds of tweaks. We also noticed another beneficial effect: it actually improves our quality of sleep!

This sounds good. Where can I buy one?

This product is unavailable at this time. We are still working on it!