What are filters?

Some articles on filters, filter:

Camfil - Segments - Clean Processes
... the biopharmaceutical industry, including high-temperature filters and bag-in, bag-out systems for containing contaminants ... is first carried out to protect the high-efficiency filters, which are much more complex and consequently more expensive ... Pre-filters here are similar to those used in the Comfort Air sector ...
Linear-nonlinear-Poisson Cascade Model - Mathematical Formulation - Multi-filter LNP
... can be generalized to a bank of linear filters, and the nonlinearity becomes a function of multiple inputs ... Let denote the set of linear filters that capture a neuron's stimulus dependence ... Then the multi-filter LNP model is described by or where is a matrix whose columns are the filters ...
Constant K Filter
... Constant k filters, also k-type filters, are a type of electronic filter designed using the image method ... They are the original and simplest filters produced by this methodology and consist of a ladder network of identical sections of passive components ... Historically, they are the first filters that could approach the ideal filter frequency response to within any prescribed limit with the addition of a ...
Camfil - Segments - Comfort Air
... Most air filters for this segment are installed in ventilation systems in schools, offices, homes, hospitals and airports, among other facilities ... Since the Comfort Air market consists mainly of replacement filters, operations in this segment are relatively insensitive to fluctuations in the economy ... In Europe, bag filters are dominant, with Hi-Flo being the most common product ...
Constant K Filter - History
... Constant k filters were invented by George Campbell ... He published his work in 1922, but had clearly invented the filters some time before, as his colleague at AT T Co, Otto Zobel, was already making improvements to the design at ... Campbell's filters were far superior to the simpler single element circuits that had been used previously ...

Famous quotes containing the word filters:

    Raise a million filters and the rain will not be clean, until the longing for it be refined in deep confession. And still we hear, If only this nation had a soul, or, Let us change the way we trade, or, Let us be proud of our region.
    Leonard Cohen (b. 1934)