The 100W subwoofer features Yamaha's proprietary Advanced YSTII technology to ensure the highest levels of sound pressure and overall performance.

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Last summer, for the Glastonbury music festival in England, British phone carrier Orange produced T-shirts that used a so-called piezoelectric panel to convert sound pressure waves into electricity.

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In addition, all feature a specially designed Acoustic Optimizer that ensures dynamic sound and deep rich bass response, with optimum acoustical characteristics achieved by adjusting the sound pressure balance in front of and behind the diaphragm.

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Worse, now that their bad technique still produced good shots, poor players had less incentive to put in the hard work needed to groove mechanically sound, pressure-proof and ultimately satisfying swings.

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Spreading the area of air pressure over the jet staggers the sound waves and decreases the intensity of the boom.

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The avalanche of petrodollars may sound frightening, but the Kuwaiti Investment Office remembers well the pressure from Margaret Thatcher's government to reduce its 22% stake in BP, the oil jewel in Britain's crown.

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The avalanche of petrodollars may sound frightening, but the Kuwaiti Investment Office remembers well the pressure from Margaret Thatcher's government to reduce its 22% stake in BP (nyse: BP - news - people ), the oil jewel in Britain's crown.

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So the Landesbanks are under pressure from rating agencies and financial counterparties to demonstrate that they have profitable and sound underlying businesses.

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Far from the bustle of Boston and the pressure of competition from other eager inventors, he mulled over everything he had discovered about sound.

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