Encyclopedia - Modulation Music: Encyclopedia Ii - Modulation Music - Significance Of Modulation
In certain classical music forms, a modulation can have structural significance. In sonata form, for example, a modulation divides the fi...   » Read the article

Encyclopedia - Module File: Encyclopedia Ii - Module File - Modules
Module files (MODs) are a class of file formats used to represent music on a computer. They store several patterns or pages of music data...   » Read the article

Encyclopedia - Modulation Music: Encyclopedia Ii - Modulation Music - Types Of Modulation
There are several different types of modulation -- (these) modulations may be prepared or unprepared, smooth or abrupt. It is smoother to...   » Read the article

Encyclopedia - Modulation: Encyclopedia Ii - Modulation - Digital Modulation Techniques
Any form of digital modulation necessarily uses a finite number of distinct signals to represent digital data. In the case of PSK, a fin...   » Read the article

Encyclopedia - Frequency Modulation: Encyclopedia Ii - Frequency Modulation - Modulation Index
As with other modulation indices, in AM this quantity indicates by how much the modulated variable varies around its unmodulated level. F...   » Read the article

Encyclopedia - Phase Modulation: Encyclopedia Ii - Phase Modulation - Modulation Index
As with other modulation indices, in PM this quantity indicates by how much the modulated variable varies around its unmodulated level. F...   » Read the article

Encyclopedia - Length Of A Module: Encyclopedia Ii - Length Of A Module - Examples
The zero module is the only one with length 0. Modules with length 1 are precisely the simple modules. For every finite-dimensional vecto...   » Read the article

Encyclopedia - Amplitude Modulation: Encyclopedia - Amplitude Modulation
Amplitude modulation (AM) is a form of modulation in which the amplitude of a carrier wave is varied in direct proportion to that of a mo...   » Read the article

Encyclopedia - Unity Module: Encyclopedia - Unity Module
The first U.S.-built component of the International Space Station, a cylinder shaped connecting module with six passageways, or nodes, na...   » Read the article

Encyclopedia - Conditional Access Module: Encyclopedia - Conditional Access Module
A Conditional Access Module (CAM) is an electronic device, usually incorporating a slot for a smart card, which gives a DVB television or...   » Read the article

Encyclopedia - Length Of A Module: Encyclopedia Ii - Length Of A Module - Definition
Let M be a (left or right) module over some ring R. Given a chain of submodules of M of the form we say that n is the length of the ch...   » Read the article

Encyclopedia - Module Mathematics: Encyclopedia Ii - Module Mathematics - Types Of Modules
Finitely generated. A module M is finitely generated if there exist finitely many elements x1,...,xn in M such that every element of M is...   » Read the article

Encyclopedia - Frequency Modulation: Encyclopedia Ii - Frequency Modulation - Theory
If the signal to be transmitted is which is restricted in amplitude to be and the sinusoidal carrier is where fc is the carrier'...   » Read the article

Encyclopedia - Indecomposable Module: Encyclopedia Ii - Indecomposable Module - Examples
The modules over fields are vector spaces. A vector space is indecomposable if and only if its dimension is 1. So every vector space is a...   » Read the article

Encyclopedia - Projective Module: Encyclopedia Ii - Projective Module - Definitions
Projective module - Direct summands of free modules. The easiest characterisation is as a direct summand of a free module. That is, a m...   » Read the article

Encyclopedia - Injective Module: Encyclopedia Ii - Injective Module - Definition
More formally, a left module Q over the ring R is injective if it satisfies one (and therefore all) of the following equivalent condition...   » Read the article

Encyclopedia - Direct Sum Of Modules: Encyclopedia Ii - Direct Sum Of Modules - Construction For Vector Spaces And Abelian Groups
We give the construction first in these two cases, under the assumption that we have only two objects. Then we generalise to an arbitrary...   » Read the article

Encyclopedia - Phase Modulation: Encyclopedia Ii - Phase Modulation - Theory
Suppose that the signal to be sent, the modulating signal with frequency ωm and phase φm, is , and the carrier onto which the signal ...   » Read the article

Encyclopedia - Amplitude Modulation: Encyclopedia Ii - Amplitude Modulation - Modulation Index
As with other modulation indices, in AM, this quantity, also called modulation depth, indicates by how much the modulated variable varies...   » Read the article

Encyclopedia - Amplitude Modulation: Encyclopedia Ii - Amplitude Modulation - Amplitude Modulator Designs
Amplitude modulation - Circuits. A wide range of different circuits have been used for AM, but one of the simplest circuits uses anode ...   » Read the article

Encyclopedia - Module Mathematics: Encyclopedia Ii - Module Mathematics - Motivation
In a vector space, the set of scalars forms a field and acts on the vectors by scalar multiplication, subject to certain formal laws such...   » Read the article

Encyclopedia - Injective Module: Encyclopedia Ii - Injective Module - Examples
Trivially, the zero module {0} is injective. Every vector space Q is injective. Reason: if Q is a subspace of V, we can find a basis of Q...   » Read the article

Encyclopedia - Injective Module: Encyclopedia Ii - Injective Module - Facts
Any product of (even infinitely many) injective modules is injective. Every direct sum of finitely many injective modules is injective. I...   » Read the article

Encyclopedia - Module Mathematics: Encyclopedia Ii - Module Mathematics - Generalizations
Any ring R can be viewed as a preadditive category with a single object. With this understanding, a left R-module is nothing but a (covar...   » Read the article

Encyclopedia - Amplitude Modulation: Encyclopedia Ii - Amplitude Modulation - Example
Suppose we wish to modulate a simple sine wave on a carrier wave. The equation for the carrier wave of frequency ωc, taking its phase to...   » Read the article

Encyclopedia - Module File: Encyclopedia Ii - Module File - Popular Formats
Each format builds on concepts introduced in its predecessors. Sound/Pro/Noisetracker module (file extension: .mod) (in fact, originally ...   » Read the article

Encyclopedia - Apollo Lunar Module: Encyclopedia Ii - Apollo Lunar Module - Lunar Module Lm Specifications
The Lunar Module was the portion of the Apollo spacecraft that landed on the moon and returned to lunar orbit. It is divided into two maj...   » Read the article

Encyclopedia - Direct Sum Of Modules: Encyclopedia Ii - Direct Sum Of Modules - Properties
With the proper identifications, we can again say that every element x of the direct sum can be written in one and only one way as a sum ...   » Read the article

Encyclopedia - Projective Module: Encyclopedia Ii - Projective Module - Vector Bundles And Locally Free Modules
A basic motivation of the theory is that projective modules (at least over certain commutative rings) are analogues of vector bundles. Th...   » Read the article

Encyclopedia - Free Module: Encyclopedia Ii - Free Module - Construction
Given a set E, we can construct a free R-module over E, denoted by C(E), as follows: As a set, C(E) contains the functions f : E â†...   » Read the article

Encyclopedia - Frequency Modulation: Encyclopedia Ii - Frequency Modulation - Applications In Radio
Edwin Armstrong presented his paper: "A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation", which fi...   » Read the article

Encyclopedia - Amplitude Modulation: Encyclopedia Ii - Amplitude Modulation - Applications In Radio
A basic AM radio transmitter works by first DC-shifting the modulating signal, then multiplying it with the carrier wave using a frequenc...   » Read the article

Encyclopedia - Pulse-width Modulation: Encyclopedia Ii - Pulse-width Modulation - Telecommunications
In telecommunications, the width of the pulses correspond with specific data values encoded at one end and decoded at the other. Pulses o...   » Read the article

Encyclopedia - Amplitude Modulation: Encyclopedia Ii - Amplitude Modulation - Forms Of Am
In its basic form, amplitude modulation produces a signal with power concentrated at the carrier frequency and in two adjacent sidebands....   » Read the article

Encyclopedia - Apollo Lunar Module: Encyclopedia Ii - Apollo Lunar Module - History
The Apollo Lunar Module came into being because NASA chose to reach the moon via a lunar orbit rendezvous (LOR) instead of a direct ascen...   » Read the article

Encyclopedia - Direct Sum Of Modules: Encyclopedia Ii - Direct Sum Of Modules - Construction For An Arbitrary Family Of Modules
One should notice a clear similarity between the definitions of the direct sum of two vector spaces and of two abelian groups. In fact, e...   » Read the article

Encyclopedia - Module Mathematics: Encyclopedia Ii - Module Mathematics - Relation To Representation Theory
If M is a left R-module, then the action of an element r in R is defined to be the map M → M that sends each x to rx (or xr in the case...   » Read the article

Encyclopedia - Delta-sigma Modulation: Encyclopedia Ii - Delta-sigma Modulation - Oversampling
Main article on oversampling Let's consider a signal at frequence f0 and a sampling frequence of fs much higher than Nyquist rate (see F...   » Read the article

Encyclopedia - Frequency Modulation Synthesis: Encyclopedia Ii - Frequency Modulation Synthesis - Reference
J. Chowning, "The Synthesis of Complex Audio Spectra by Means of Frequency Modulation," Journal of the Audio Engineering Society 21(7), 1...   » Read the article

Encyclopedia - Module Mathematics: Encyclopedia Ii - Module Mathematics - Submodules And Homomorphisms
Suppose M is a left R-module and N is a subgroup of M. Then N is a submodule (or R-submodule, to be more explicit) if, for any n in N and...   » Read the article

Encyclopedia - Quadrature Amplitude Modulation: Encyclopedia Ii - Quadrature Amplitude Modulation - Overview
As with all modulation schemes, QAM conveys data by changing some aspect of a base signal, the carrier wave, (usually a sinusoid) in resp...   » Read the article

Encyclopedia - Module Mathematics: Encyclopedia Ii - Module Mathematics - Definition
Specifically, a left module over the ring R consists of an abelian group (M, +) and an operation R × M → M (called scalar multiplicati...   » Read the article

Encyclopedia - Columbus Iss Module: Encyclopedia Ii - Columbus Iss Module - Description
The laboratory is a cylindrical module designed to fit in the cargo bay of the Space Shuttle, very similar in shape to the Multi-Purpose ...   » Read the article

Encyclopedia - Apollo Command/service Module: Encyclopedia Ii - Apollo Command/service Module - Service Module Sm
The Service Module was an unpressurized cylindrical structure, measuring 24 feet 7 inches (7.5 m) long and 12 feet 10 inches (3.9 m) in d...   » Read the article

Encyclopedia - Direct Sum Of Modules: Encyclopedia Ii - Direct Sum Of Modules - Internal Direct Sum
Suppose M is some R-module, and Mi is a submodule of M for every i in I. If every x in M can be written in one and only one way as a sum ...   » Read the article

Encyclopedia - Direct Sum Of Modules: Encyclopedia Ii - Direct Sum Of Modules - Categorical Interpretation
In the language of category theory, the direct sum is a coproduct and hence a colimit in the category of left R-modules, which means that...   » Read the article

Encyclopedia - Columbus Iss Module: Encyclopedia Ii - Columbus Iss Module - History
ESA's Board of Directors approved the Columbus program in 1985. From then on, numerous studies and proposals were made. Initially the Col...   » Read the article

Encyclopedia - Apollo Command/service Module: Encyclopedia Ii - Apollo Command/service Module - Command Module Cm
The Command Module was a truncated cone measuring 10 feet 7 inches (3.2 m) tall and having a diameter of 12 feet 10 inches (3.9 m) across...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The 82182a Time Module
The time module added a real-time clock. The clock allowed you to use the actual time in your programs. You could also define alarms that...   » Read the article

Encyclopedia - Finitely-generated Module: Encyclopedia Ii - Finitely-generated Module - Intuitive Introduction
Informally, modules are an abstraction of the concept of a number of directions, together with distances (or coefficients) in each direct...   » Read the article

Encyclopedia - Finitely-generated Module: Encyclopedia Ii - Finitely-generated Module - Some Facts
Finitely generated modules over the ring of integers Z coincide with the finitely generated abelian groups; these are completely classifi...   » Read the article

Encyclopedia - Single-sideband Modulation: Encyclopedia Ii - Single-sideband Modulation - Demodulation
The front end of an SSB receiver is the same as that of an AM or FM receiver, consisting of a superheterodyne RF front end that produces ...   » Read the article

Encyclopedia - Finitely-generated Module: Encyclopedia Ii - Finitely-generated Module - Formal Definition
The left R-module M is finitely-generated if and only if there exist a1, a2, ..., an in M such that for all x in M, there exist r1, r2, ....   » Read the article

Encyclopedia - Delta-sigma Modulation: Encyclopedia Ii - Delta-sigma Modulation - Quantization Theory Formulas
Main article on quantization Quantization error e can be treated as white noise as we can assume that a signal can be in the range of on...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The 82181a Extended Memory Module
Extended memory modules added more extended memory to the HP-41C. They required an extended functions module to be present, or the HP-41C...   » Read the article

Encyclopedia - Apollo Command/service Module: Encyclopedia Ii - Apollo Command/service Module - Csms Produced
Gumdrop Charlie Brown Columbia Yankee Clipper Odyssey Kitty Hawk Endeavour Casper America ... See also:Apollo Command/Service Module, A...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The Application Pacs
The ROM-based application 'pac' modules added up to 4 kilobytes of read-only memory (some up to 8 kilobytes, but these were simply two in...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The 82180a Extended Functions Module
The Extended Functions module added many functionalities the uses had wanted for ages, as the ability to programmatically assign function...   » Read the article

Encyclopedia - Pulse-width Modulation: Encyclopedia Ii - Pulse-width Modulation - Power Delivery
PWM can be used to reduce the total amount of power delivered to a load without losses normally incurred when a power source is limited b...   » Read the article

Encyclopedia - Single-sideband Modulation: Encyclopedia Ii - Single-sideband Modulation - Signal Generation
The best way of thinking of SSB modulation is to first consider an amplitude-modulated signal. This will have two frequency-shifted copie...   » Read the article

Encyclopedia - Single-sideband Modulation: Encyclopedia Ii - Single-sideband Modulation - Signal Generation
The best way of thinking of SSB modulation is to first consider an amplitude-modulated signal. This will have two frequency-shifted copie...   » Read the article

Encyclopedia - Pulse-width Modulation: Encyclopedia Ii - Pulse-width Modulation - Voltage Regulation
(main article: switched-mode power supply) PWM is also used in efficient voltage regulators. By switching voltage to the load with the ap...   » Read the article

Encyclopedia - Pulse-width Modulation: Encyclopedia Ii - Pulse-width Modulation - Audio Effects And Amplifcation
PWM is sometimes used in sound synthesis, in particular subtractive synthesis, as it gives a nice effect similar to chorus or slightly de...   » Read the article

Encyclopedia - Modified Frequency Modulation: Encyclopedia Ii - Modified Frequency Modulation - Coding
Notice that two "ones" can't appear together, and the maximum number of zeros in a row is three. This bit stream is then NRZI encoded to ...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The Memory Modules Hp-41c Only
Memory modules added RAM main memory to the calculator, allowing more programming steps and/or more data registers. The original HP-41C h...   » Read the article

Encyclopedia - Quadrature Amplitude Modulation: Encyclopedia Ii - Quadrature Amplitude Modulation - Rectangular Qam
The first rectangular QAM constellation usually encountered is 16-QAM, the constellation diagram for which is shown here. A Gray coded bi...   » Read the article

Encyclopedia - Quadrature Amplitude Modulation: Encyclopedia Ii - Quadrature Amplitude Modulation - Non-rectangular Qam
Two diagrams of circular QAM constellation are shown, for 8-QAM and 16-QAM. The circular 8-QAM constellation is known to be the optimal 8...   » Read the article

Encyclopedia - Destiny Laboratory Module: Encyclopedia Ii - Destiny Laboratory Module - Destiny’s Laboratory Structure
Internal to the laboratory are racks, rack standoffs, and vestibule jumpers. The lab racks house the system hardware in removable modular...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The 82104a Card Reader
The card reader was a device able to read and write small rectangular plastic cards with two magnetic strips. The card reader could copy ...   » Read the article

Encyclopedia - Selective Estrogen Receptor Modulator: Encyclopedia Ii - Selective Estrogen Receptor Modulator - Method Of Action
Although the SERMs have no immediate structural relationship with 17β-estradiol, they are stereochemically similar to this estrogen. The...   » Read the article

Encyclopedia - Selective Estrogen Receptor Modulator: Encyclopedia Ii - Selective Estrogen Receptor Modulator - Uses
SERMs are used dependent on their pattern of action in various tissues: clomifene is used in anovulation raloxifene is used for osteopor...   » Read the article

Encyclopedia - Quadrature Amplitude Modulation: Encyclopedia Ii - Quadrature Amplitude Modulation - Ideal Structure
Quadrature amplitude modulation - Transmitter. The following picture shows the ideal structure of a QAM transmitter: First the flow of ...   » Read the article

Encyclopedia - Isomorphism Theorem: Encyclopedia Ii - Isomorphism Theorem - Rings And Modules
The isomorphism theorems are also valid for modules over a fixed ring R (and therefore also for vector spaces over a fixed field). One ha...   » Read the article

Encyclopedia - Hp-41 Extension Module: Encyclopedia Ii - Hp-41 Extension Module - The 82143a Thermal Printer/plotter
The printer used rolls of thermal paper to print lines of up to 24 characters. The thermal paper provided for a bluish printout, but was ...   » Read the article

Encyclopedia - Pulse-code Modulation: Encyclopedia Ii - Pulse-code Modulation - History Of Pcm
PCM was invented by the British engineer Alec Reeves in 1937 while working for the International Telephone and Telegraph in France. The f...   » Read the article

Encyclopedia - Pulse-code Modulation: Encyclopedia Ii - Pulse-code Modulation - Encoding The Bitstream As A Signal
Pulse-code modulation can be either return-to-zero (RZ) or non-return-to-zero (NRZ). For a NRZ system to be synchronized using in-band in...   » Read the article

Encyclopedia - Pulse-code Modulation: Encyclopedia Ii - Pulse-code Modulation - Digitization As Part Of The Pcm Process
In conventional PCM, the analog signal may be processed (e.g. by amplitude compression) before being digitized. Once the signal is digiti...   » Read the article

Encyclopedia - Apollo Spacecraft: Encyclopedia Ii - Apollo Spacecraft - Lunar Module Lm
The Lunar Module was the portion of the Apollo spacecraft that landed on the moon and returned to lunar orbit. It is divided into two maj...   » Read the article

Encyclopedia - Mir: Encyclopedia Ii - Mir - Mir Modules
The Mir space station was constructed by connecting several Mir modules, each launched into orbit separately by the Proton rocket, except...   » Read the article

Encyclopedia - Apollo Spacecraft: Encyclopedia Ii - Apollo Spacecraft - Service Module Sm
The Service Module was a portion of the spacecraft that is unpressurized and contains fuel cells, batteries, high gain antenna, radiators...   » Read the article

Encyclopedia - Cinema 4d: Encyclopedia Ii - Cinema 4d - Modules
As well as the core application (for modeling, texturing, lighting and rendering), CINEMA 4D also has several add-on programs available t...   » Read the article

Encyclopedia - Atsc: Encyclopedia Ii - Atsc - Modulation And Transmission
Main articles: 8VSB, 256QAM ATSC signals are designed to use the same 6 MHz bandwidth as NTSC television channels. Once the video signals...   » Read the article

Encyclopedia - Adventure Dungeons & Dragons: Encyclopedia Ii - Adventure Dungeons & Dragons - Module Codes
Except for a few early limited edition modules, all modules of early Dungeons & Dragons were denoted with a code consisting of a lett...   » Read the article

Encyclopedia - Wwvb: Encyclopedia Ii - Wwvb - Modulation Format
At the start of each UTC second, the WWVB 60 kHz carrier, which has a normal power of 50 kW, is reduced in power by 17 dB. Before July 12...   » Read the article

Encyclopedia - Apollo Spacecraft: Encyclopedia Ii - Apollo Spacecraft - Spacecraft Lunar Module Adapter Sla
The Spacecraft Lunar Module Adapter (SLA) is an aluminum cone shaped structure that connects the Service Module to the Saturn S-IVB rocke...   » Read the article

Encyclopedia - Graded Algebra: Encyclopedia Ii - Graded Algebra - Graded Modules
The corresponding idea in module theory is that of a graded module, namely a module M over A such that also and This idea is much u...   » Read the article

Encyclopedia - Accounting Software: Encyclopedia Ii - Accounting Software - Modules
Accounting software is typically composed of various modules, different sections dealing with particular areas of accounting. Among the m...   » Read the article

Encyclopedia - Infrared Homing: Encyclopedia Ii - Infrared Homing - Scanning Patterns And Modulation
The pattern in which the space in front of the missile is searched for the target also tends to determine the missile's resistance to dec...   » Read the article

Encyclopedia - Adventure Dungeons & Dragons: Encyclopedia Ii - Adventure Dungeons & Dragons - History Of Official Modules And Adventures
The first Dungeons & Dragons scenario was called "Temple of the Frog", which was included in the original Blackmoor Dungeons & Dr...   » Read the article

Encyclopedia - Serotonin: Encyclopedia Ii - Serotonin - Modulating Levels Of 5-ht
A variety of psychiatric medications affect serotonin levels, including the monoamine oxidase inhibitors (MAOIs), tricyclic antidepressan...   » Read the article

Encyclopedia - Korg Ms-20: Encyclopedia Ii - Korg Ms-20 - Modulation
Korg MS-20 - Envelopes. There are two envelope generators. EG1 has Delay, Attack, and Release parameters, whilst EG2 has Hold, Attack, ...   » Read the article

Encyclopedia - Serotonin: Encyclopedia Ii - Serotonin - Modulating Levels Of 5-ht
A variety of psychiatric medications affect serotonin levels, including the monoamine oxidase inhibitors (MAOIs), tricyclic antidepressan...   » Read the article

Encyclopedia - Ruby On Rails: Encyclopedia Ii - Ruby On Rails - Other Modules
In addition to this, Rails also offers some other modules, like Action Mailer for sending email and Action Web Service for SOAP and XML-R...   » Read the article

Encyclopedia - X10 Industry Standard: Encyclopedia Ii - X10 Industry Standard - Device Modules
Depending on the load that is to be controlled, different modules must be used. For incandescent lamp loads, a lamp module or wall switch...   » Read the article

Encyclopedia - Alec Reeves: Encyclopedia Ii - Alec Reeves - Invention Of Pulse Code Modulation
It was in Paris that Reeves had the idea that made him famous - and which helped shape the modern world. Since the invention of the telep...   » Read the article

Encyclopedia - Quadratic Form: Encyclopedia Ii - Quadratic Form - Quadratic Form On A Module Or Vector Space
Let V be a module over a commutative ring F; often V is a vector space over a field F. A map Q : V → F is called a quadratic form ...   » Read the article

Encyclopedia - Dialectical Behavior Therapy: Encyclopedia Ii - Dialectical Behavior Therapy - The Four Modules
Dialectical behavior therapy - Mindfulness. The essential part of all skills taught in skills group are the core mindfulness skills. Ob...   » Read the article

Encyclopedia - Dylan Programming Language: Encyclopedia Ii - Dylan Programming Language - Modules Vs. Namespace
In most OO languages the concept of class is the primary encapsulation system; the language is generally thought of as "a way to make cla...   » Read the article

Encyclopedia - Project Apollo: Encyclopedia Ii - Project Apollo - Current Locations Of Apollo Command Modules
Apollo 6 Command Module - Fernbank Science Center, Atlanta, Georgia Apollo 7 Command Module - Frontiers of Flight Museum, Dallas, Texas A...   » Read the article

Dictionary - Pulse Amplitude Modulation, Pam Fluorometer: Oceanography Dictionary - Pulse Amplitude Modulation, Pam Fluorometer
  Definition and meaning of pulse amplitude modulation, PAM fluorometer:   pulse amplitude modulation (PAM) fluorometer ...   » Read the article