Aragonite and calcite are polymorphs of calcium carbonate. It is harder than calcite (3.5 to 4, rather than 3, on the Mohs scale) and somewhat denser, but like calcite it responds to weak acid by vigorous bubbling.
Wavetable Synthesis Definition - Wavetable synthesis is a method for generating sounds from signals of a digital nature. The technique stores digital... Wavetable Synthesis Definition - Wavetable synthesis is a method for generating sounds from signals of a digital nature. The technique stores digital sound samples from various sources, which can later be modified, enhanced or combined for reproducing sounds. Wavetable synthesis is considered one of the oldest methods for generating sounds from computers. It differs from simple PCM sample playback because wavetable synthesis relies on looping over the buffer instead of simply a read once method.
A demodulator is a circuit used in AM (amplitude modulation) and FM (frequency modulation) receivers to separate the information that was modulated onto the carrier from the carrier itself.It could be audio and/or video information, or other data. A demodulator is the analog of the modulator. A modulator modulates the carrier frequency, while a demodulator detects the modulation on the carrier wave and recovers the original lower frequency waveform at the destination.   For many years the modulated carrier wave was converted to a radio signal.