Development of Extended Low Frequency Enclosure

Development of Extended Low Frequency Enclosure Introduction The rationale for this work is to present a theoretical and practical analysis of an extended low frequency enclosure capable of 20-65Hz, obtained through a method of careful cabinet design built around a suitable transducer and to support the findings with a build supporting sufficient evidence through implementation of testing. Low frequency tones Enclosure types Reinforced low frequencies cannot depend entirely on the driver itself for extended low end and requires a form of baffle or enclosure to completely isolate the front and rear drives. D. Weems (page 11) states also that a speaker can deliver 100 times greater sound intensity at low frequencies in a suitable box than in free air. Nearly all drivers are sat in an enclosure or at least some kind of baffle in order to increase and extend the low frequency output from the speaker system (J.Murphy pg 17). It is shown in figure 1 the importance of separation, illustrating how pressure waves from the front of the cone equal that of the pressure radiating from the rear and therefore are of opposite polarity and cancel each other out. Sound is directional at mid and higher frequencies and so these can be audible at a greater level, though wavelengths as long compared to the diameter of the speaker curve back and around the cone so that the out-of-phase waves mix (J.murphy pg17). When a baffle or box is utilized, the driver becomes much more efficient, using the much more contained air in front and behind the driver like a spring. Another purpose to house a speaker in an enclosure is its help to dampen the driver further from excessive vibrating at its frequency of resonance (fs) and furthermore to increase definition on the musical notes by reducing its hangover. If accurately designed, this should be kept to a minimum and is the relationship or air pressure against the cone between a speaker and its enclosure that helps balance the mechanical properties of air volume within and help generate a smooth flat frequency response. This is known as acoustic or resistive loading. S.Stark (pg141) explains in the lower two-thirds or so of a drivers intended frequency range, the speaker cone requires an extra amount of acoustical impedance (or load) to keep its motion under control. Again if both appliances are well designed, especially the driver construction, this acoustical imp edance is balanced out on the diaphragm movement. Loudspeaker driversThese are known as Thiele-Small parameters and are essentially a set of electromechanical parameters that determine the performance of a low frequency driver. Each driver is sent out with these specifications from the manufacture and help define a relationship between a speaker and an intended enclosure for use. They are very accurate and crucial in establishing constitution in the enclosure design in respect to sound quality and response output. One way to look at these in more depth is to see a direct correlation with the voice coil, magnet, and cone interacting with the cone suspension and the air in and outside the enclosure as an electrical circuit made up of resistors, capacitors and inductors. This can be seen as a relatively simple analysis circuit where changing the parameter increments of the individual components can alter the needed frequency. By then changing these parameters back into physical attributes such as enclosure size for a sealed box, a desi gn can be implemented (A. Ludwig 1997). This practice sets a scientific foundation in the practice of loudspeaker design as much a science as an art. It can often be seen in some cases, speaker designing a trial and error process, though with simple calculation correction methods based on these parameter formulas. For example, from predicted theory or software modelling, once a loudspeaker build has been complete, an initial test for electrical impedance across the driver terminals will demonstrate the first step in comparing the finished result with the simulations. If these are in contrast with the predictions, the enclosure can be tuned founded on these measurements. Often impedance spikes are sensitive to design faults and can cause extended amplification or location shifts at unintended frequencies. Ludwig (1997) however, suggests how these responses can be due to mutual coupling though in some cases such as a bass-reflex or ported designs actually a necessary result benefittin g the design by allowing air to enter the duct and work in alliance with the speaker cone. There are three parameter categories as constituted by Neville Thiele and Richard small. These are acoustical, mechanical and electrical and can be determined by either an A, M or E in their symbol script. Acoustic parameters are established by the effective piston area of the cone where the mechanical attributes are obtained by multiplying by the square of this area in the case of mass and resistive loss, or dividing by the square of the area in the case of compliance. Ludwig (1997). The electrical components involve two energy diffusions: the voice coil DC resistance and the amplifiers output resistance. To build a loudspeaker these parameters must be fully understood so justified usage can be applied in the different stages of design. Q has no dimensions though is a measure of damping on a speaker. It is simply the ratio between energy storing and energy dissipative mechanisms at resonance and in electrical terms, it is the ratio of the reactance to the resistance at its resonant frequency. D. Pierce (1995). The greater the damping of a speaker i.e. higher the Q, the lower its output is at resonant frequency indicating a small mechanical energy transfer in the driver. In other words, the amount of resistance available to dissipate the energy is small compared to the amount of energy stored. Therefore, for larger applications such as long horn or ported enclosures, generally a lower Q is required to produce the synonymous low frequency responses. This is induced by damping the resonant motion quickly as the resonant energy is dissipated quickly and removed from the resonant system. D.Pierce (1995). The mechanical and electrical mechanisms are classed as Qms and Qes with a combined unification closely described as Q ts, also determined by the enclosure volume (Vas) and total Q of the driver. EQUATIONS Essentially the compliance is the measure of stiffness of a drivers suspension measured in litres or cubic ft. Written as Vas, It denotes the same volume of air for the cone as it does for the speaker suspension. Larger drivers predominantly have a larger Vas due to the resistance of air it has to push in comparison to a smaller driver. The compliance must be established in order to ascertain whether an enclosure size is too small or large for the driver. A larger value equates to a stiffer surround and therefore being more suited in large enclosures. This said however, often results in a lower Qts and would correspond better as a mid-bass region either in a three or four way system. To follow on from these few basic parameters, a look into some basic speaker enclosures allows a practical look into the enclosure variables and how each box evolves to ascertain the diagnostics of my final build. EQUATION Compliance ratio =3 ÃŽ ± = Vas / Vab = Cms/cmb compliance of driver is expressed as an equivalent volume of air or Vas (Murphy pg24) Speaker designs can be put into two main classifications: direct radiators and acoustic horns with many variations and combinations to gain different frequency responses from the size, shape and air tightness of the box. Within these classifications bring four sub category types, each with their own advantages and disadvantages so suit different applications. A sealed box or air suspension enclosure uses quite a compact design, mainly found in home hi-fi where excessive SPL is not such an essential necessity. It utilizes the force of air at the rear driver more so than its own suspension, though a floppy driver is often used along with the spring to help dampen the driver cone movement. The rear of a speaker in any enclosure plays a fundamental part in shaping the sound waves. It is therefore clear to see why these types of enclosures are not commonly seen in the larger scale venues or for live music due to its inefficient design of soley manipulating the rear waves of the diaphragm as a linear air spring in a sealed enclosure. The compliance ratio decides whether the box is sealed (infinite baffle) or air suspension. An infinite baffle box usually has a low ratio of about one or two as the box replies predominantly on the cone suspension as a its control with a large box volume behind. This in turn acts similarly to a baffle of infinite proportion where the air gives little resistance to the movement of the cone. On the other hand, an air suspension can have a relatively high compliance ratio of four or five due to the air being reasonably stiff which in turn allows a looser driver where most the control is regulated. This enclosure has one self contained variable known as Vb and as mentioned by Ludwig, by altering the volume size in co-ordinance with driver parameters can help tune the box to its optimum response. As well as a drivers resonance frequency, the enclosure simultaneously also produces a system resonance known as fsc and a second order high pass filter defined as Qtc and corresponds to the sealed box Q. These parameters will perpetually be greater than the drivers uniformed fs and Qts. To gain the enclosures resonance, both the volume of the enclosure and driver parameters have to be applied. Therefore: F(sc) = F (fs, Qts, Vas, Vb) Ported box has two variables V(B) the box volume and F(B) the tuning frequency A ported enclosure essentially allow for extended low end with a given driver and is even possible to reduce the size of box gaining extra low end frequency without increasing the internal stiffness of the air. The air inside the box continues its proficiency as a spring yet the port serves as an additional piston where the vibrating air supplements the resonant frequency for two other contemporary resonances; one in phase slightly higher than the Fs and one lower than the Fs working out of phase. As with a sealed enclosure a balance has to be struck as this lower Fs and out of phase response can run the risk of over excursion as the roll off frequency quickly becomes a much steeper gradient. Stark (2004) explains how when a speaker is given a significant amount of power below the resonant frequency, the speaker unloads and becomes drastically more inclined to push beyond its normal excursion limits. At its best sound bad, but at worst can risk driver failure. Helmholtz resonator stark 178 Port tuning frequency = Fb Further advances on ported designs such as installing additional baffles inside the enclosure result in an even lower resonant frequency of the air mass in the enclosure, fabricating a smaller enclosure at the front with a larger air space at the rear of the driver. These are known as bandpass enclosures and by adjust the volumes of air in the two compartments help to equalize the enclosure with the duct or port used to tune the fs. This again comes as a compromise where a considerable amount of power is needed to produce the equivalent output levels. Transient response differences page 29 murphy What the different frequencies do More about the port Variations, band pass 4th 5th 6th order Horn loaded speakers serves a much more beneficial approach of further increasing efficiency over direct radiators and serve two paramount parameters: A higher composure of directivity control (especially in the higher frequencies) and loading of the driver. By increasing the loaded of the driver over that of the free air, increases efficiency and hence the output and by further concentrating the sound into a fixed solid angle increases the output further (B. Kolbrek horn theory). This method of amplification is not a recent discovery and has dated back thousands of years where ram horns have been used consisting of a small throat and large mouth where perceivable amplification is recognized. Thomas Edison then evolved this principle in 1877 where the first tin horn phonograph was invented, coupling the minute vibrations of the diaphragm to the air of the listening area (J.Dinsdale horn loudspeaker design). To expand this principle further, a loudspeaker propagates pressure producing an internal source impedance and external load impedance and essentially acts as an acoustical transformer, matching the high impedance at the driver to the low impedance of the room air by its smooth rate of increased cross sectional area from the driver cone to the horn mouth. In a direct radiating enclosure, because a mismatch between source and the load, most the energy is converted into heat in the voice coil and the mechanical resistances where the size of source is small compared to the wavelengths its trying to produce and therefore merely push the medium away and making it quite an inefficient design (B.Kolberk). Kolberk goes on to say that high frequency output consist of plane waves (Wave in which the wavefront is a plane surface; a wave whose equiphase surfaces form a family of parallel planes (J. D. Jackson, 1998 )) that do not spread out. The system will therefore be at its optimum efficiency as the load from the driver is at its highest. If the lower frequencies coul d be radiated also in pane waves Quarter wave horns Tapped The build Initially, a tapped horn build was not first choice. A model of a twin loaded 18 4th order bandpass sub was modelled using the software winISD. This program allows modelling of vented, bandpass and passive radiator enclosures with additional tools such as filter calculators and signal generators with help if designing multi-way systems. Various drivers were configured such as BC 6PE13, Beyma G550, PD 1850 and an RCF LF18X400 though a 800W Ciare 18.00sw would have been the driver of choice with a low fs of 22Hz at. This illustrates the maximum SPL response from the predicted cabinet. This was as close to flat as possible with a low f3 (cut of frequency -3db) and tuned to 29Hz. However, size would have been a serious issue with a cabinet size of 600 litres. This was the first initiation into speaker design with little appreciation to what is really intended from a low frequency enclosure. The purpose of this build is to establish an efficient, effective and accurate acoustical reproducing circuit. The circuit system should be able to emphasize the necessary frequency tones and accordingly dampen unwanted characteristics. Furthermore, through the desired frequency bandwidth, an ideal flat response contour should be achieved where the structure should collaborate, emphasizing the bass tones in the music content. From looking at sealed enclosures, an analytical careful design should be constructed where the use of both sides of the speaker should be implemented to its maximum performance. Therefore, by constructing a circuit where the change in phase from the front and rear of the driver actually couple and in turn reinforce the sound level output. For these reverse polarity sound waves to couple and increase efficiency, a folded horn arrangement seems a coherent route to pre-empt and can be either exponential, hyperbolic, tractix, parabolic or conical each giving their own individual response in terms of efficiency and distortion. In essence of a loudspeaker box, distinctively the drivers competence plays a considerable role in quality and magnitude of the sound as much as the structure of the box. A paramount feature of a good enclosure besides its principle design is its backbone of rigidity and strength. A feature of good quality cabinets demand a sturdy design with minimal or no waver from the surrounding walls or internal baffles caused by the high pressure sound waves. Correspondingly, joins and fixings should also be air tight and free from unwanted vibrations. Stark (pg 144) explains how this possible flexing of the walls can create unnecessary resonances and consequently reduces efficiency and maximum output. Furthermore, it also degrades the principle of the infinite baffle and can also diminish transient response. In other words, the enclosure is likely to continue vibrate after the driver has stropped moving. From analysing the different enclosures in research, a further look into quarter wave horns was undertaken. It was found that transmission lines absorbed much of the intensity on output though a slightly adapted rear loaded horn with a tap and could accomply a larger driver could be much more suitable resulting in a smaller driver and box with extended efficiency at low end. A new driver had to be found with a much more in depth look into the thiele-small parameters and which characteristics would work in such a horn. Again various speakers were modelled but the Eminence Lab-12 predicted the best results due to WinISD is not capable of calculating tapped horn responses so a look into the horn modelling software; Horn Response (Hornresp) designed by D.J.McBean was carried out. Here the parameters of the driver can be inserted along with the length and area of each horn section, the rear chamber parameters including acoustical lining specifications and a series of predicted test tools such as schematic diagram of the horn, acoustical impedance, SPL response, electrical impedance, diaphragm displacement, phase response and group delay. On first look at this program the input parameters for each section looked somewhat perplexing and took a lot of time calculating what each section could achieve with different horn designs. On initial play, parameters from other designs were inserted where alterations could be adjusted to see the possible outcome. Advancing from this further, looking at a pattern in previous models and trying to design a horn suitable for the needs of my own chosen driver. It wasnt until extensive reading in speaker design, that the different thiele-small parameters really came into play where a clear relationship between the driver parameters and enclosure parameter knowledge that a formulated pattern could be understood and used on further developments. Although the variables can be adjusted on the different sections, a starting point had to be established. Firstly a driver had to been chosen. It was quickly found however that not any driver would suit a tapped horn. For example, as ownership of a several 12 Ciare drivers a logical and initial route to take to help save money was to use these drivers. Dick pierce: Closed boxes store energy that interacts with the loudspeaker driver in complex ways, especially in vented enclosures. Boxes themselves also have resonances. Normally a high-Q closed box is combined with low-Q loudspeaker driver to give a desirable total system Q. But when we mount a loudspeaker driver on an open baffle this situation is reversed. An open baffle stores no energy and has a low-Q of 0.2 and Carver chose to use a high-Q woofer with a total Q of 3+ to arrive at a desirable total system Q. Sound is the element which occurs when an object is set to vibrate. Reproduced sound can be seen as an art to reinforce these inputs accompanied using sciences of physics, mechanical and electrical engineering. Loudspeakers have evolved considerably since E. W. Siemens built the first moving-coil transducer in 1875. Bibliography Ludwig. (1997). Thiele Small Analysis of Loudspeaker Enclosures. Available: http://www.silcom.com/~aludwig/Sysdes/Thiel_small_analysis.htm. Last accessed 10 April 21010. D. Pierce. (1995). what is Q. rec.audio.tech. 1 (1), 1. S.Stark (2004). Live Sound Reinforcement. 9th ed. Michigan: Artist Pro. 143. B. Kolbrek. (2008). Horn Theory: An introduction, Part 1. Tube, Solid State, Loudspeaker Technology. 1 (1), 1. J.Dinsdale. (1974). Horn Loudspeaker Design. . 1 (1), 1. J. D. Jackson, Classical Electrodynamics (Wiley: New York, 1998 )

The Social Penetration Theory & the Uncertain Reduction Theory

Uncertainty reduction theory This theory comes to explain the uncertainty among people who communicate with each other and how different types of communication will help to reduce the uncertainty. As a starting point, the developers of this theory (Charles Berger and Richard Calabrese) stated that uncertainty is an unpleasant feeling, which people prefer to avoid as much as they can. Every person has been confronted with the feeling of uncertainty, rather if it was when arriving to new a destination or more commonly when meeting a new person.In order to reduce the unpleasant feeling, people tend to seek information about the uncertain and by that creating more comfortable feelings, and more predictable relationships in case of communication with other people. â€Å"Coping with uncertainty is a central issue in any face-to-face encounter, whether interactants are conscious of this fact or not† (Uncertainty Reduction Theory Then and Now. Charles R. Berger), but when the uncertai nty is reducing automatically the feeling of attraction (not only physically) start to emerge.In the heart of this theory, Berger and Calabrese connected uncertainty with seven concepts that are in the base of communication: verbal output, nonverbal warmth, information seeking, self-disclosure, reciprocity of disclosure, similarity, and liking. On top of that, they stated that communication reduces uncertainty, and motivation to come over the unpleasant feeling of uncertainty will occur in three situations, and in those situations people will be more likely to reduce their uncertainty level: †¢There are incentives to one of the sides (What this person can do for me? . †¢Expecting future interaction (New unfamiliar roommate). †¢Unexpected / unusual behavior from the other side There is also three basic ways in which people seeking information about another person: †¢Passive strategies – observing the other person, without him knowing he being watched. †¢Active strategies – usually will be done through asking third parties for information about the person you are interested in. †¢Interactive strategies – direct contact and connection with the other person.Sales & the Uncertainty reduction theory â€Å"There are at least two ways uncertainty is relevant to interpersonal communication processes. First, in the broad sense, uncertainty reduction is a vital concern for the conduct of almost any communicative transaction. Second, uncertainty reduction’s impact on interpersonal relationships can be looked at in a more narrow sense; that is, the role-played by uncertainty reduction in the prediction of specific relationship outcomes.The broader role of uncertainty reduction concerns the interaction process itself, whereas the narrow sense concerns the outcomes of the interaction† (Charles Berger). The interpersonal communication process is crucial for any sales person in any kind of industry no matter what kind of products / services he or she trying to promote or sell. The essence of building relationship is the uncertainty reduction theory as the two sides (more important for the sales person) trying to discover the person who stands in front of him.Definitely being able to help to the other person to know more about yourself (the salesperson point of view), will help in the purpose of reducing his uncertainty and uncomfortable feelings he deals with, while developing relationship with the salesperson. Assuming I am a salesperson, first thing in the process of building relationship (before the first contact with a customer) is to use the passive and active strategies in order to gather as much information I can about my customer.Form the moment the first meeting was conducted, I will use the interactive strategy as I wish my customer will know everything he want to know about me (or about the product / service I wish to promote),and by that making him feel more comfortable and not vulnerable. The purpose of using this theory expressed best in the course book â€Å"SELL†, It was mentioned that â€Å"The more the sales person knows, the easier it is to build trust and gain the confidence of the buyer. Buyers have certain expectations of the salesperson and the knowledge that he or she brings to the table†.This quote reflects best why a salesperson must use the uncertainty reduction theory in order to achieve his goals. As a salesperson, I should adjust my content and tactic toward my customer habits; this is another reason why it is important to use the three ways for gathering information according to the uncertainty reduction theory (Active, Passive and Interpersonal). The Social Penetration Theory This theory takes the theory of Berger and Calabrese one step deeper, as it xamines more deeply the interpersonal relationship / communication between two or more parties. The theory developed by Irwin Altman and Dalmas Taylor (1973), in which they st ated that as relationship develop, it become deeper and deeper, from non-intimate levels through to more personal levels. This method also called ‘Onion analogy’, as the intimacy grows and time pass by, more layers of the personality revealed to the other side, that is also the way social penetration is being made, through self disclosure.According to this theory, the disclosure goes through few stages: Orientation stage, exploratory affective stage, affective stage, stable stage and de-penetration stage. Each stage reflects the level of intimacy / level of familiarity with another person. Number of studies examined this theory, all agreed that development of relationship between people come together with development from knowing peripherals aspects of personality into deeper aspects. The theory of social penetration provides a framework for describing the development of interpersonal relationship. These behaviors include exchange of information, exchange of expressions of positive and negative affect, and mutual activities† (The development of interpersonal relationship: social penetration processes). The salesperson should be aware both to his personality, together with the customer personality, and to understand to which level of intimacy the customer is willing to reach / or to which level he want to get with the customer. Sales & The Social Penetration TheorySalespersons should understand the implications of the social penetration theory on the best side in order to create long term relationship between them (or the company they are represent) and their consumers. These days any business, no matter how big it is, wishes to create base of loyal customers who had good experience with the business directly or through the business sales force. From that reason, the business sales force has to be skilled in the aspect of interpersonal relationship. For example, a salesperson who skips the levels / stages of disclosure (according to theory) w ill fail in his purpose of ‘capturing the customer’.On top of that, his self-disclosure should be done precisely as well and he should not give to much information about himself or the product / service in the early stages of the relationship. â€Å"Most service marketers today recognize the importance of keeping customers and making them into better customers (Berry 1983). In marketing whole life insurance (and, perhaps, similar services), the sales-person's ability to affect the customer's commitment and dependency on the provider may be determined largely by the interpersonal relationship he or she establishes with the customer.Likewise, in service contexts characterized by continuous exchange activity and considerable purchase uncertainty, the long-term interests of the customer may be best served by initiating and maintaining enduring relationships with salespeople† (Relationship Quality in Services Selling: An Interpersonal Influence Perspective). As mentio ned in the quote above, establishing good interpersonal relationship between the salesperson and the customer is crucial for any business these days.Moreover, in order to create good brand name for the business, the salesperson must have the ability to answer all the expectations of the customer, and to be trustworthy while doing so. The key issue for salesperson when he implicate the social penetration theory is not to hurry thing too much, for instance he can’t be intimate with the customer at the early stages of the relationship. He should be peaceful, and should have the ability to give the customer the opportunity to disclose himself and not to push him into the corner and by that scare him away.

The Demise of Macbeth. - 1338 Words

Macbeth’s Demise. From the beginning of the play, and in the progression of the plotline, it is clear that the character of Macbeth is in the downward spiral into evil. Macbeth’s evil and inner demons originate from a combination of the prophecy of the three witches, as well as his own lofty ambitions. However, it is the pressure from power hungry Lady Macbeth, and the murder of King Duncan that help transform Macbeth into the ruthless and immoral killer that he becomes. As the play continues he shows less and less remorse and begins committing more serious and sinister crimes, such as the killing of his best friend, and the innocent. By the end of the play, Macbeth is completely consumed by the evil, which subsequently ends his reign as†¦show more content†¦After this the great changes in Macbeth as he makes his transition to the ruthless tyrant that he is at the end are more obvious. Shortly after the murder, Macbeth becomes a ruthless king, filled with great paranoia. Now he remembe rs the other part of the prophecy when the witches tell Banquo, â€Å"thou shalt get kings, though thou not be none†¦Ã¢â‚¬ (Act 1, Scene 3, Line 67-68). The new paranoid Macbeth decides that Banquo must be eliminated to preserve his own power and â€Å"royal† lineage. â€Å"Our fears in Banquo stick deep†¦to make them Kings, the seeds of Banqou Kings! Rather then though so, come, fate into the list, and champion me to th’utterance! (Act 3, Scene 1, Line 49-72) The difference between the ways he dealt with this incident and the way he dealt with Duncan is that this time his decision is quick, no longer second guessing his decision or showing any signs of guilt, even though now he is killing his best friend. Macbeth does not consult his plans with Lady Macbeth either; whose torment has taken her down the path of insanity, and subsequently suicide. Murder has now become his nature, his empathy engulfed by his evil ambitions. â€Å"Oh full of scorpions in my mind dear wife!†(Act 3, Scene 2, Line 36). This is the last time in the play that any remnants of guilt are seen in Macbeth, his guilt presents as another hallucination, this time of Banquo’s bloody ghost. It is this final presence of guilt in this part of the plotShow MoreRelatedSelf Demise Of William Shakespeare s Macbeth906 Words   |  4 PagesSelf Demise of Unwillful Ending? Although Macbeth was bound to be killed after all the awful murders he committed, Shakespeare’s audience is left wondering who caused the ultimate downfall of Macbeth. While Macbeth was a confident man, Lady Macbeth thought he was merely a boy, entirely free of the drive to kill, leading to Macbeth feeling the need to kill to show his true manhood. 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Betty Ford and Her Time in Office - 1786 Words

In December of 1973, Gerald Ford, who had in the previous year considered retirement from politics, was appointed as Vice President under Richard Nixon, after Vice President Spiro Angew forcibly resigned. On August 9, 1974, in an unprecedented move, Richard Nixon resigned from Presidential office under the political and social pressure of the captivating Watergate scandal. In this torrential turn of circumstances, under United States law, Gerald Ford became the 38th President of the United States and Betty Ford was officially the First Lady. Soon, it became apparent that the new First Lady was going to make an impact. When Betty became First Lady at age 54, America was expecting a continuation of the status quo: caring for Jerry as a political housewife and, like the modest Pat Nixon, hosting luncheons and visiting hospitals, schools, and orphanages. Like many First Ladies before her, Pat had valued her popular image as a model middle-class homemaker, supportive wife and devoted moth er, and she had often been portrayed as the quintessential traditionalist in stark relief to the rising persona of the â€Å"liberated woman† (Perlstein). Sharply reversing this trend of conservative traditionalism, Betty chose instead to embody the values of this new generation of liberated women and to embrace many socially taboo issues with openness. As First Lady and cohort to President Gerald Ford (1974-1977), Betty Ford used candor and her national power to influence the controversial topics ofShow MoreRelated President Gerald Ford Essay1433 Words   |  6 PagesPresident Gerald Ford Outline I. Introduction II. Early Life III. Presidency IV. Conclusion V. Bibliography Introduction Ford may not be the most important president during his time, but he did more than some presidents did for the people. 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