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Case Upon - A Technical Introduction to Audio Cables
Think user, usability!Ever visited a website, which has the most dazzling flash graphics, that takes so much time to load that the aesthetic value of the graphics is just lost on you? Your tired 28.8 kbps dial-up connection at home takes up precious time to load the website, and you want to cause serious bodily harm to the person who did not think of the home user’s needs before designing the website.This genre of websites lacks basic usability, which causes immense frustration to users who need to interact with websites like these, on a regular basis.Incorporating basic fundamentals of usability and interactive design can increase traffic in an exponential manner to a website.Relying on usability inspection to evaluate the user interface of a website, using evaluative feedback on specific elements of a user interface to improve it, and improving upon the ease of interaction for the end user, to eventually reducing the frequency and seriousness of user errors, will all result in a larger number of users visiting your website, thereby generating greater ROI (Return On Investment).With a lot of research being done in the field of Human Computer Interaction (HCI), many website designers have begun to sit up and take note of the surprising results some of the research has thrown up. Users are increasingly demanding an easier wa
Signals in all types of wires are conveyed by the combination of voltage and current. Every signal has some amount of voltage and some amount of current. The larger the difference in voltage between two places, say the beginning and the end of a cable, the larger the amount of current, and vice-versa. The direct analogy to voltage and current is the flow of water through a hose. The amount of water flowing through the hose is analogou
Every year the dance begins. Supervisors and managers know they’ll soon have to do the annual performance review for all of their employees. They get the notice from HR reminding them of the deadlines. They get copies of the forms that will be used. They may even get some training on how to use the forms or conduct the reviews more effectively. Every few years the process will change – either in a small administrative way or in some more substantial way – at least from the perspective of those revising the process.But to the supervisor, it is all the same. Once a year they have to have a performance conversation with their “direct reports.”While the employee doesn’t get the memo from HR, they know the time is coming too – they know that at some point they’ll get an email from their boss, or the topic will come up in a staff meeting. “Performance Reviews will be soon, look at your calendars and let’s find a time to do this.”Most supervisors make this proclamation with a serious tone – they know that they represent the organization’s interests, and that even if they don’t like doing these reviews, they know they are a part of the job. Most employees with more than a couple of years on the job know what their bosses are thinking as well – and the dance continues.And so it goes – supervisors do performance reviews because they
One of the most common questions asked by consumers faced with purchasing cables for their audio or home theater system is, “What is so important about cables anyway?” They can cost as much or more than some of the hardware in the system and to many it is difficult to understand why wire isn’t just wire.
To begin to understand how audio cables work, we have to start with the two fundamentally different types of audio cables you are likely to have in your system. The first type of cable is called an interconnect, which is used to connect various components together (such as a CD player to a receiver). The second type of cable is called the loudspeaker cable (this is the wire going from the receiver or amplifier to the speakers). It is important to realize that both types of cables are carrying the same information, just with different amounts of energy.
Interconnects carry a signal with very little energy. These cables only need just enough energy to convey the information from the source, for example a CD player, to the amplifier. The low energy requirement means that the signal in interconnects has very little current (usually in the range of thousandths of an amp).
Loudspeaker cables on the other hand, carry a large amount of energy. All of the energy required to move the speaker cones and make sound must come through the loudspeaker cables. Because of the high-energy requirement in these cables the current is relatively high (currents can reach 10 amps or more).
The very basic reason why audio cables are important is because they change the signal going through them. There are two different, fundamental ways that an audio cable can change the signal. The cable itself can change the signal, or the cable can allow outside sources of energy to change the signal.
In order to understand how these two situations can occur, some basic background electrical knowledge is needed.
Signals in all types of wires are conveyed by the combination of voltage and current. Every signal has some amount of voltage and some amount of current. The larger the difference in voltage between two places, say the beginning and the end of a cable, the larger the amount of current, and vice-versa. The direct analogy to voltage and current is the flow of water through a hose. The amount of water flowing through the hose is analogous
Every successful business started with a very good marketing strategy that made it more competitive with other businesses in its field. It does not mean that successful business shave more resources to start with. However, these businesses are the ones who knew how to maximize whatever resources they already have and used them to their advantage.Marketing strategy is really all about considering the resources available to the company and then finding a way to make sue of these strategies in the most creative way possible. It is not so much about how much resources a business has at its disposal but how creative they can get to make the minimal resources they have to work for them.Take a small grocery business faced with a bigger competitor. This grocery has to find a way to be more competitive given the minimum resources it has at its disposal compared to its competitor.As a marketing strategy, the small grocery store offered additional value added services to its clients. It can be in the form of loyalty stubs that can be changed for some items after a while, free car cleaning or even free coffee for shoppers at certain periods. All these are marketing strategies that are aimed at making the small grocery more competitive in the neighbourhood.A marketing strategy is a product of a good marketing plan that will give the fram
Interconnects carry a signal with very little energy. These cables only need just enough energy to convey the information from the source, for example a CD player, to the amplifier. The low energy requirement means that the signal in interconnects has very little current (usually in the range of thousandths of an amp).
Loudspeaker cables on the other hand, carry a large amount of energy. All of the energy required to move the speaker cones and make sound must come through the loudspeaker cables. Because of the high-energy requirement in these cables the current is relatively high (currents can reach 10 amps or more).
The very basic reason why audio cables are important is because they change the signal going through them. There are two different, fundamental ways that an audio cable can change the signal. The cable itself can change the signal, or the cable can allow outside sources of energy to change the signal.
In order to understand how these two situations can occur, some basic background electrical knowledge is needed.
Signals in all types of wires are conveyed by the combination of voltage and current. Every signal has some amount of voltage and some amount of current. The larger the difference in voltage between two places, say the beginning and the end of a cable, the larger the amount of current, and vice-versa. The direct analogy to voltage and current is the flow of water through a hose. The amount of water flowing through the hose is analogou
As one of the most prolific, if not the most prolific online article writer, having personal wrote some 10,545 articles online now, I have found myself in a very interesting situation. I have now compiled these articles into stacks and then I am going to make them into eBooks? So, the next question is; What if You Just Wrote 100 eBooks; What Would You Do With Them?Well, I wish to give away some, so Home Schoolers, Parents, Boy Scouts, Civil Air Patrol, etc can have them. Although, I also realize that if someone gets something for free then often they do not appreciate it. So, some perhaps I will sell at a nominal fee. And, I am going to put all of them on our Online Think Tank sites in the reading room for members only.Then I am also writing some Military eBooks and I will send them to the appropriate contacts I have and Cloak them on our online site to only certified members; known quantities. The rest I may sell as eBooks or give away.. I think I will mix and match. Some published in print, some given away, some sold as eBooks, some as free eBooks. If I sell them I want the price low and go for volume.You must understand that I sold my companies and I am in retirement. So, I guess I could it makes sense for me to do this and offer them this way? You see, my intention is to get the information out to the world first and foremost. I cert
Loudspeaker cables on the other hand, carry a large amount of energy. All of the energy required to move the speaker cones and make sound must come through the loudspeaker cables. Because of the high-energy requirement in these cables the current is relatively high (currents can reach 10 amps or more).
The very basic reason why audio cables are important is because they change the signal going through them. There are two different, fundamental ways that an audio cable can change the signal. The cable itself can change the signal, or the cable can allow outside sources of energy to change the signal.
In order to understand how these two situations can occur, some basic background electrical knowledge is needed.
Signals in all types of wires are conveyed by the combination of voltage and current. Every signal has some amount of voltage and some amount of current. The larger the difference in voltage between two places, say the beginning and the end of a cable, the larger the amount of current, and vice-versa. The direct analogy to voltage and current is the flow of water through a hose. The amount of water flowing through the hose is analogou
UK land for sale market has witnessed exponential growth in last few years with value of properties showing manifold increase.It has resulted in rapid expansion of the land banking industry and sprouting up of numerous firms selling land in UK , but all this is about to change with a perceptible slowdown in world economy and a dip in customer confidence levels which threatens to cause a pause in money spending decisions.A shakeup in UK Land Banking industry is thus on cards which could result in the way this business have been conducted as well as closing down or mergers of many small firms with larger players.In recent times there have been complaints about unscrupulous players selling land in UK to unsuspecting populace without adequately informing them of pros and cons of such decisions and willfully withholding certain important information. This has led to a renewed thrust by both UK Government as well as established players in the industry for fixing certain guidelines which could ensure that only genuine players are allowed in players are allowed in UK Land for Sale business.Liberal Democrat MP George Mulholland recently raised this question in the parliament. Excerpts of his speech can be seen at: http://www.libdems.org.uk/community/house-of-commons-westminster-hall-land-banking120706.htmlFSA have been active in tr
The very basic reason why audio cables are important is because they change the signal going through them. There are two different, fundamental ways that an audio cable can change the signal. The cable itself can change the signal, or the cable can allow outside sources of energy to change the signal.
In order to understand how these two situations can occur, some basic background electrical knowledge is needed.
Signals in all types of wires are conveyed by the combination of voltage and current. Every signal has some amount of voltage and some amount of current. The larger the difference in voltage between two places, say the beginning and the end of a cable, the larger the amount of current, and vice-versa. The direct analogy to voltage and current is the flow of water through a hose. The amount of water flowing through the hose is analogou
Discounted conference calling rates are easy to find by just searching on the Internet. Many resources are available for companies looking to conference calling rates. Once a discounted conference calling service has been found, it is important to check all of the rate information to make sure that the conference calls being held qualify for the discount. The rate that is stated in most cases on a web site home page is usually already a discounted calling rate.In most cases though, that rate is available only without the use of certain services. Other restrictions may apply. For example, some companies require that a reservation be made a certain period of time prior to the call. Failure to make the necessary reservation can mean either the conference is unable to be held, or only a limited number of people can attend. Another area to be aware is the fact that if a reservation is made for say 100 people but only 50 people call into the conference, some companies will charge a fee for unused lines. So if that is the case it is important to accurately estimate the number of calls expected and make sure that enough notice is given to the attendees. Obviously not every company that advertises discounted conference calling rates is able to deliver on that promise.So investigation is needed to make sure that the chosen service provider is a
Signals in all types of wires are conveyed by the combination of voltage and current. Every signal has some amount of voltage and some amount of current. The larger the difference in voltage between two places, say the beginning and the end of a cable, the larger the amount of current, and vice-versa. The direct analogy to voltage and current is the flow of water through a hose. The amount of water flowing through the hose is analogous to current. The water pressure in the hose is analogous to voltage. The higher the amount of water pressure, the more water will flow through the hose. The higher the amount of voltage, the more current will flow through the wire.
Every cable has a set of electrical properties that can be measured using standard electrical testing equipment. The three most basic properties are resistance, capacitance and inductance. While a detailed description of these three different electrical properties is outside the scope of this article, a basic description of the relevant effects of these three properties can be given.
- Resistance opposes current. The higher the resistance the greater the amount of energy that is removed from the current and turned into heat.
- Capacitance opposes changes in voltage. If a voltage is increasing, capacitance will cause the voltage to increase more slowly. If a voltage is decreasing, capacitance will cause the voltage to decrease more slowly.
- Inductance opposes changes in current. If current is increasing, inductance will cause the current to increase more slowly. If current is decreasing, inductance will cause the current to decrease more slowly.
The final piece of background knowledge that is needed for this article is what the audio signal looks like. If one were to take the speaker cover off a speaker to look at the speaker cone while music is playing, you would see that it is moving back and forth. In order to move the speaker cone back and forth, the electrical signal must push and then pull the cone in rapid and repeating fashion. This is accomplished by having an Alternating Current, or AC.
Alternating Current simply means that the voltage oscillates between positive and negative. Because the voltage drives the current, this means that the current also goes positive and negative. In other words, the current is going back and forth in the wire,
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