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DSP Algorithm Measures Frequency & Damping - 10/08/98 EDN-Design
Ideas The time-domain DSP algorithm described here allows you to
measure the key parameters—natural frequency and damping—in linear,
second-order electromechanical systems. The method applies to a range
of electromechanical transducers (electromagnetic or electrostatic],
including dynamic speakers, seismic geophones, micromachined sensors,
and other systems....Contains several designs, scroll to find this
one. [Design Idea by Olga Belousova, Los Alamos, NM, and Alexander
Belousov, New York, NY]
Efficient Algorithm Generates Random Signal - 12/05/96 EDN-Design Ideas A common
way to simulate a sequence of bandwidth-limited-noise samples is to start with a
sequence of uncorrelated random numbers that have a suitable distribution and then
pass that sequence through a filter. Unfortunately, filtering affects the signal
level, and the complexity of the filter makes computations inefficient. Alternatively,
the VHDL algorithm in Listing 1 requires very little computation,.... [Design Idea by
Ove Johansson, CelsiusTech Systems, Stockholm, Sweden]
Fast Algorithm Computes Histograms - 10/28/99 EDN-Design Ideas:....[Design Idea
added 2/06] EDN migrating links. This link is not verified. Search the "title" + "EDN"
for new link.
Log amp uses capacitor-charging law - 01/10/02 EDN-Design Ideas The novel
logarithmic amplifier in Figure 1 relies on the exponential charging characteristics
of a simple RC circuit. The expression for the time, T, required for a capacitor, C,
to reach a voltage (VIN-VK]from 0V, when charged through a resistor....[Design Idea
added 06/03] EDN migrating links. This link is not verified. Search the "title" + "EDN"
for new link.
