When confronting the unexplained, it is helpful to consider it from many different points of view. In an essay published in 2004, entitled "Sensors, Filters, and the Source of Reality," Robert Jahn and Brenda Dunne of Princeton University's PEAR laboratory proposed that consciousness constructs its reality by ordering the information it derives from the external world through an array of physiological, psychological, and cultural filters. This thesis has now been considered by nineteen distinguished scholars who here present their commentaries from a broad spectrum of professional and personal perspectives. Drawn from such diverse backgrounds as art, Buddhism, evolutionary biology, fantasy, out-of-body experiences, philosophy, physics, psychology, semiotics, and systems engineering, among others, these contributions offer an assortment of unique and fascinating glimpses of how our experiences and their styles of representation are reflected through these filters of consciousness.

This invaluable resource introduces progressive techniques for the creation of sophisticated reflectionless filter topologies that have identically zero reflection coefficient at all frequencies. Practical implementations are discussed along with their advantages when compared to classical absorptive filters and their benefits in real-world systems such as up/down converters, multiplier chains, broadband amplifiers, analog-to-digital converters, and time-domain applications. This book offers insight into the innovative process of developing reflectionless filters from first principles using both lumped elements and transmission lines. Tools for the creation of reflectionless multiplexers, matched sloped equalizers, and advanced, high-order, and nonplanar topologies are also presented.

A digital filter can be pictured as a "black box" that accepts a sequence of numbers and emits a new sequence of numbers. In digital audio signal processing applications, such number sequences usually represent sounds. For example, digital filters are used to implement graphic equalizers and other digital audio effects. This book is a gentle introduction to digital filters, including mathematical theory, illustrative examples, some audio applications, and useful software starting points. The theory treatment begins at the high-school level, and covers fundamental concepts in linear systems theory and digital filter analysis. Various "small" digital filters are analyzed as examples, particularly those commonly used in audio applications. Matlab programming examples are emphasized for illustrating the use and development of digital filters in practice.

This guide to using filters in photography covers colour and black and white film. Beginners can learn what filters are available and how to use them successfully. More experienced photographers will find this book a source of true inspiration.

In the vein of poetry collections like Milk and Honey and Adultolescence, this compilation of short, powerful poems from teen Instagram sensation @poeticpoison perfectly captures the human experience. In Light Filters In, Caroline Kaufman—known as @poeticpoison—does what she does best: reflects our own experiences back at us and makes us feel less alone, one exquisite and insightful piece at a time. She writes about giving up too much of yourself to someone else, not fitting in, endlessly Googling “how to be happy,” and ultimately figuring out who you are. This collection features completely new material plus some fan favorites from Caroline's account. Filled with haunting, spare pieces of original art, Light Filters In will thrill existing fans and newcomers alike. it’s okay if some things are always out of reach. if you could carry all the stars in the palm of your hand, they wouldn’t be half as breathtaking

In this guide for the modern photographer, Ross Hoddinott explains when and how to use traditional hardware filters on your camera and how to achieve the same effects with software instead - as well as a wealth of other digital filter-effects that were impossible on film.

Combining technique and creativity, this book provides data about the full range of filters and their applications with both colour and black and white film. Two hundred images illustrate how chromatic filters (coloured) change the colour content; nonchromatic (colourless) filters physically change light waves; and special-effect filters, such as multiple-prism, starburst and streak, create illusions that go beyond what we think of as visual reality.