Please go to SBaGen -- Binaural Beat Brain Wave Experimenter's Lab for complete information and FAQ. Here is the direct link download for sbagen v.1.4.4

Sbagen generates pink noise and binaural tones through soundcard in real-time according to a 24-hour programmed sequence read from a file. It can also be used to play a sequence on demand, rather than according to the clock. MP3 or OGG soundtracks may also be mixed in instead of pink noise.

The basic idea of binaural beats is that by applying slightly different frequency sine waves to the two ears, a beating affect is created in the brain itself, due to the internal wiring of the brain. If, in the presence of these tones, you relax and let your mind go, your mind will naturally synchronize with the beat frequency. In this way it is possible to accurately lead the brain to various states, according to the frequencies that you apply.

It is also possible to play several different tones together, giving several different beat frequencies, and programming quite a complex brain-state based on several frequencies (in several different bands). These complex mixtures of frequencies are the basis of the Hemi-Sync(TM) process from the Monroe Institute, based on Robert Monroe's experiments with out-of-body experiences and so on.

Taking an alternative approach, CenterPointe use single tones, but vary the carrier frequencies to achieve a kind of emotional cleansing effect, which is also an extremely valuable and interesting technique. There may well be other useful binaural beat based techniques yet to be discovered. For an overview of the theory of binaural beats and how they affect the mind, take a look at the Monroe Institute site.

Emotional Freedom Techniques - commonly abbreviated to EFT - is a modern and growing form of personal development and therapy. EFT is one of a number of recent concepts increasingly used for improving and developing people. EFT can be effective for various purposes, including personal and self-development, attitude and behaviour development, resolving personal problems, reducing stress, and restoring life balance. This free article about EFT is contributed by Peter Delves, a leading UK Emotional Freedom Techniques trainer and practitioner, which is gratefully acknowledged. EFT, like many modern spiritually-based or 'alternative' concepts, generates passionate debate as to its scientific validity - especially among the scientific community and conventionally-minded therapists. This article does not seek to judge whether, how or why EFT works. This information merely seeks to introduce the concept and to outline its principles, so that you can then seek more information or try the methodology, and then decide for yourself.

Emotional Freedom Techniques - Introduction

EFT (Emotional Freedom Techniques) is about returning the mind, body and feelings to a state of balance and harmony so you are not limited by negative emotions.

Even though we are 'designed' to recover from unpleasant experiences or thought patterns, nevertheless we can be affected by recurring emotions from past events such as relationships, trauma or loss. We can also be affected by ongoing or future events such as work-related stress, interpersonal problems, depression and various kinds of anxieties.

In these examples, emotions can be stuck rather than dispersed. Even if we try to ignore them, they still affect our lives. If people decide to do something about the negative feelings or patterns they may try counselling, see their doctor, or compensate for their feelings in some way. Every approach has its merits, but many people will not have heard of Emotional Freedom Techniques (EFT) as an option for resolving their problem.

How EFT Works

EFT is a very effective yet gentle method of directly balancing the body's energy system for the feelings that you want to change. It's a bit like clearing a log that's blocking a stream where the log represents a stuck emotion in your stream of energy. You don't have to believe in the theory though, just as you don't need to know how a car works under the bonnet to drive one. Some people do like to find out more about the theory, while others are happy simply to have their problem resolved.

What EFT Involves

Using EFT involves 'tuning into' the issue and then tapping with your fingers on specific acupressure points with your fingers. For example if you still carry anger towards someone who has hurt you in the past, you would be asked to think about them, and notice how you feel. But you do not have to relive past events. You just have to be aware that the negative feeling is there. Having therefore 'tuned in' to it, you are shown which acupressure points to tap, and what words to say as you do so. (Saying a few things also helps to disperse the emotion from the system).

Having done that you are then asked to think about the person or situation again and check how you feel. Typically you will notice a significant reduction in the intensity of the feeling. If it's not completely gone then the EFT practitioner repeats the process, bringing the intensity down each time until full balance is restored.

All this is done while sitting normally in a chair.

After EFT Do Feelings Return?

Following an EFT session, the dispelled feelings very rarely return. If they do this implies that there is a bit more work to do than the practitioner initially thought. Of course you can still feel angry, fearful or guilty about other things - and it might be appropriate to do so. But if you have thoroughly used EFT for a specific issue, the feeling will not return. Once you have sent the problem 'downstream', it does not come back up.

You will still retain the memory of the event you were working on but it will no longer have the emotional charge that it had before. The other thing to say is that there may be more than one emotion that needs to cleared, like more than one log jamming the stream. So using our example there might be the anger towards the person, but there could also be anger towards yourself, or other emotions involved such as guilt or sadness. All of these can be addressed separately, and often when you start to disperse one emotion the intensity of others can start reducing straight away.

EFT Original Development

The Emotional Freedom Techniques concept was developed in the US in the 1990’s by Gary Craig. EFT roots are in acupuncture, kinesiology and psychology. EFT is now spreading very rapidly in the US and in the UK, where the concept is now used in some specialist areas of the National Health Service.

Personal consultations in EFT and training for practitioners in Emotional Freedom Techniques are available in the UK from Peter Delves Associates. For more information about EFT visit www.delves.co.uk. The contribution of this free EFT article is gratefully acknowledged.

See the section on modern personal development, which shows how EFT can be integrated with other modern development concepts to provide an effective alternative to traditional counselling and training methods.

EFT, like many modern spiritually-based concepts, generates passionate debate as to its scientific validity. This article does not seek to judge whether, how or why it works. This information seeks to introduce the concept and to outline its principles, so that you can then seek more information or try the methodology, and then decide for yourself.

Neuro-linguistic programming is a form of psychotherapy that was devised in the 1970s by linguist John Grinder and therapist Richard Bandler. The main principle is that our life experiences programme the way we see the world and ourselves, and the way we communicate with others. The way we think is revealed not only by our choice of words, but through our body language and eye movements and even subtle changes in skin colour/perspiration. The therapist draws the patient’s attention to any unconscious thought patterns that may be having a detrimental effect on the patient’s overall mental and even physical well-being, and attempts to ‘re-programme’ their responses to the situation.

Neuro-linguistic programming has applications in the general contexts of sport, business, sales and education, as it can be a powerful tool in fostering self-confidence and effective communication. However, as a form of therapy, the focus tends to be the patient’s attitude towards their illness. For example, a neuro-linguistic therapist would interpret someone who views themselves as ‘an asthmatic’, rather than ‘a person with asthma’, as having let the condition take over. Negative patterns of thought are modified, so that the patient feels less limited by their illness, and their body’s natural healing systems can be more effective; it is thought that the immune system may be stimulated by such a process.

In addition to lowering the brain frequency to relax the listener (or to raise it to help focusing), there are other controversial, alleged uses for binaural beats. For example, that by using specific frequencies an individual can stimulate certain glands to produce desired hormones. Beta-endorphin has been modulated in studies using alpha-theta brain wave training, and dopamine with binaural beats. Among other alleged uses, there are reducing learning time and sleeping needs (theta waves are thought to improve learning, since children, who have stronger theta waves, and remain in this state for a longer period of time than adults, usually learn faster than adults; and some people find that half an hour in the theta state can reduce sleeping needs up to four hours; however, this is supposed to happen with any way to get into theta state, e.g. meditation;) some use them for lucid dreaming and even for attempting out-of-body experiences, astral projection, telepathy and psychokinesis. However, the role of alpha-wave activity in lucid dreaming is subject to ongoing research.
Alpha-theta brainwave training has also been used successfully for the treatment of addictions, for the recovery of repressed memories, but as with other techniques this can lead to false memories.
A trial of Delta binaural beat technology over 60 days has shown positive effect on self-reported psychologic measures, especially anxiety. There was significant decrease in trait anxiety, an increase in quality of life, and a decrease in insulin-like growth factor-1 and dopamine and has been successfully shown to decrease mild anxiety and lessen hospital acute pre-operative anxiety.
Another claimed effect for sound induced brain synchronization is enhanced learning ability. It was proposed in the 1970s that induced alpha brain waves enabled students to assimilate more information with greater long term retention. In more recent times has come more understanding of the role of theta brain waves in behavioural learning The presence of theta patterns in the brain has been associated with increased receptivity for learning and decreased filtering by the left hemisphere. Based on the association between theta activity (4–7 Hz) and working memory performance, biofeedback training suggests that normal healthy individuals can learn to increase a specific component of their EEG activity, and that such enhanced activity may facilitate a working memory task and to a lesser extent focused attention.

Frequency range
> 40 Hz Gamma waves -->Higher mental activity, including perception, problem solving, fear, and consciousness

13–40 Hz Beta waves -->Active, busy or anxious thinking and active concentration, arousal, cognition

7–13 Hz Alpha waves -->Relaxation (while awake), pre-sleep and pre-wake drowsiness

4–7 Hz Theta waves -->Dreams, deep meditation, REM sleep

< 4 Hz Delta waves -->Deep dreamless sleep, loss of body awareness

(The precise boundaries between ranges vary among definitions, and there is no universally accepted standard.)
The dominant frequency determines your current state. For example, if in someone's brain alpha waves are dominating, they are in the alpha state (this happens when one is relaxed but awake). However, also other frequencies will be present, albeit with smaller amplitudes.
The brain entraining is more effective if the entraining frequency is close to the user's starting dominant frequency. Therefore, it is suggested to start with a frequency near to one's current dominant frequency (likely to be about 20 Hz or less for a waking person), and then slowly decreasing it towards the desired frequency.
Some people find pure sine waves unpleasant, so a pink noise or another background (e.g. natural sounds such as river noises) can also be mixed with them. In addition to that, as long as the beat is audible, increasing the volume should not necessarily improve the effectiveness, therefore using a low volume is usually suggested. One theory is to reduce the volume so low that the beating should not even be clearly audible, but this does not seem to be the case (see the next paragraph).

Binaural beats may influence functions of the brain besides those related to hearing. This phenomenon is called frequency following response. The concept is that if one receives a stimulus with a frequency in the range of brain waves, the predominant brain wave frequency is said to be likely to move towards the frequency of the stimulus (a process called entrainment). In addition, binaural beats have been credibly documented to relate to both spatial perception & stereo auditory recognition, and, according to the frequency following response, activation of various sites in the brain.
The stimulus does not have to be aural; it can also be visual or a combination of aural and visual. (One such example would be Dreamachine.) However, using alpha frequencies with such stimuli can trigger photosensitive epilepsy.
Perceived human hearing is limited to the range of frequencies from 20 Hz to 20,000 Hz, though Infrasound - sound below 20Hz - still have scientifically observable effects on humans, however, it is not readily audible, especially at low volume levels. While the frequencies of human brain waves are below about 40 Hz. To account for this lack of perception, binaural beat frequencies are used. Beat frequencies of 40 Hz have been produced in the brain with binaural sound and measured experimentally.
When the perceived beat frequency corresponds to the delta, theta, alpha, beta, or gamma range of brainwave frequencies, the brainwaves entrain to or move towards the beat frequency. For example, if a 315 Hz sine wave is played into the right ear and a 325 Hz one into the left ear, the brain is entrained towards the beat frequency (10 Hz, in the alpha range. Since alpha range is associated with relaxation, this has a relaxing effect or if in the beta range, more alertness. An experiment with binaural sound stimulation using beat frequencies in the Beta range on some participants and Delta/Theta range in other participants, found better vigilance performance and mood in those on the awake alert state of Beta range stimulation.
Binaural beat stimulation has been used fairly extensively to induce a variety of states of consciousness, and there has been some work done in regards to the effects of these stimuli on relaxation, focus, attention, and states of consciousness. Studies have shown that with repeated training to close frequency sounds that a plastic reorganization of the brain occurs for the trained frequencies and is capable of asymmetric hemispheric balancing.

The sensation of binaural beats is believed to originate in the superior olivary nucleus, a part of the brain stem. They appear to be related to the brain's ability to locate the sources of sounds in three dimensions and to track moving sounds, which also involves inferior colliculus (IC) neurons. Regarding entrainment, the study of rhythmicity provides insights into the understanding of temporal information processing in the human brain. Auditory rhythms rapidly entrain motor responses into stable steady synchronization states below and above conscious perception thresholds. Activated regions include primary sensorimotor and cingulate areas, bilateral opercular premotor areas, bilateral SII, ventral prefrontal cortex, and, subcortically, anterior insula, putamen, and thalamus. Within the cerebellum, vermal regions and anterior hemispheres ipsilateral to the movement became significantly activated. Tracking temporal modulations additionally activated predominantly right prefrontal, anterior cingulate, and intraparietal regions as well as posterior cerebellar hemispheres. A study of aphasic subjects who had a severe stroke versus normal subjects showed that the aphasic subject could not hear the binaural beats whereas the normal subjects could.

Heinrich Wilhelm Dove discovered binaural beats in 1839. While research about them continued after that, the subject remained somewhat of a scientific curiosity until 134 years later, with the publishing of Gerald Oster's article "Auditory Beats in the Brain" (Scientific American, 1973). Oster's article identified and assembled the scattered islands of relevant research since Dove, offering tremendous fresh insight (and new laboratory findings) to research on binaural beats.

In particular, Oster saw binaural beats as a powerful tool for cognitive and neurological research, addressing questions such as how animals locate sounds in their three-dimensional environment, and also the remarkable ability of animals to pick out and focus on specific sounds in a sea of noise (what is known as the "cocktail party effect").

Oster also considered binaural beats to be a potentially useful medical diagnostic tool, not merely for finding and assessing auditory impairments, but also for more general neurological conditions. (Binaural beats involve different neurological pathways than ordinary auditory processing.) For example, Oster found that a number of his subjects that could not perceive binaural beats suffered from Parkinson's disease. In one particular case, Oster was able to follow the subject through a week-long treatment of Parkinson's disease; at the outset the patient could not perceive binaural beats; but by the end of the week of treatment, the patient was able to hear them.

In corroborating an earlier study, Oster also reported gender differences in the perception of beats. Specifically, women seemed to experience two separate peaks in their ability to perceive binaural beats- peaks possibly correlating with specific points in the menstrual cycle (onset of menstruation and approx. 15 after). This data led Oster to wonder if binaural beats could be used as a tool for measuring relative levels of estrogen.