Frequently Asked Questions...
Classic box enclosure or angles and curves?
Does the shape of the enclosure have a direct effect on the sound waves emmited by the sub and how they are received by the listener(s) considering the apropiate dimentions in square inches have been given inside the enclosure?
Answer:
For subwoofer enclosures the shape doesn't matter much. Yes, perfect cubes are not recommended so there is not standing waves. The wavelengths of the sub are so long that it doesn't effect the sound.
For higher frequency sounds there is a noticeable difference for the shape of the enclosure.
The main thing you want to do for a sealed enclosure is get the correct airspace.
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Waves Classic
Nelscott Reef Big Wave Classic 2010
Revealing The Secret Behind Brain Wave Patterns
The brain is one of the classic examples of God's creativity. The functioning of brain is now an unfolded mystery. We now know that brain produces electrical impulses known as brain waves. This rhythmic activity of brain (brainwave pattern) can be recorded with an instrument called electroencephalograph
Now most of the readers would be wondering what is so important about brainwaves patterns. For almost all of us it had been a chapter for academics in high school days. It would be worthy to understand that our brainwave pattern is directly related to our present sate or rather present phase of mind. For example when an individual is experiencing anger or agitation, his brainwave pattern would widely differ from a person who is calm and relaxed. Similarly a subject who is under sound sleep will have different wave pattern in comparison with an individual who is engaged in mental activity like reading or studying.
With the introduction of brainwave entrainment products, scientists have discovered the fact that one can alter the state of mind by altering their respective brainwave pattern.
It is important to understand that there are basically four types of brain wave patterns:
1) Beta brain waves (14Hz-20Hz) - This is the phase of normal waking consciousness, the state we indulge during day-to-day common activities. They are stimulated when you are engaged in activities with the outside world. Lack of beta wave stimulation can cause mental disorders like insomnia, ADD and depression. On the other hand greater beta activity can ensure greater concentration, attentiveness and increased memory power.
2) Alpha brain waves (8Hz- 13 Hz) - Similar to a light meditative phase, during this stage mind is technically relaxed but focused. They exist when you day dream during your activities and become stronger when you tend to close your eyes. This phase is ideal for intense level of concentration. This state is also widely known as super- learning state where the mind absorb information faster as well as retain it for longer period.
3) Theta brain waves (4 Hz - 7 Hz) - They are stimulated when an individual is undergoing dreaming stage of sleep or deep meditative phase. It is the state of heightened creativity. It is a natural stress free phase in which the body releases natural anti-depressants called endorphins which help the body to relax and distress human body. This brain pattern is important as far as self-improvement field is concerned because it is at this stage that the mind filters out the negative thought and destructive habits. It is proven that 30 minutes of listening to theta waves can reduce your sleep to four hours.
4) Delta brainwave (5Hz-3Hz) - It is considered as the slowest of brainwaves when an individual is in dreamless state or in comma. It is the only state in which both the hemisphere of brain is working together.
Manipulation of brain wave pattern using brainwave entrainment tasks can make people think more effectively, develop focus on goals, experience relaxation and above all connect with the inner soul. Channelizing the brain waves would decrease social anxiety and improve academic performances.
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