Triple top and triple bottom Triple top and triple bottom Triple top and triple bottom are reversal chart patterns used in the technical analysis of stocks, commodites, currencies, and other assets. Formation The formation of triple tops is rarer than that of double tops in the rising market trend. The volume is usually low during the second rally up and lesser during the formation of the "third top." The peaks may not necessarily be spaced evenly like those which constitute a Double top. The intervening valleys may not bottom out at exactly the same level, i.e. either the first or second may be lower. The
Quadruple reed Quadruple reed A quadruple reed is a type of reed by means of which the sound is originated in various wind instruments. The term "quadruple reed" comes from the fact that there are four pieces of dried palm leaf vibrating against each other, in pairs. A quadruple reed, such as the Thai pinai, operates in a similar way as the double reed and produces a timbre similar to the oboe. The Arabic "pii chawaa" is, "sometimes described as having a double reed though this is actually folded yet again, creating four layers of reed and thus requiring considerable lung power