Speaker Independent Speech Recognizer Development

Speaker Independent Speech Recognizer Development Chapter 4 Methodology and Implementation This chapter describes the methodology and implementation of the speaker independent speech recognizer for the Sinhala language and the Android mobile application for voice dialing. Mainly there are two phases of the research. First one is to build the speaker independent Sinhala speech recognizer to recognize the digits spoken in Sinhala language. The second phase is to build an android application by integrating the trained speech recognizer. This chapter covers the tools, algorithms, theoretical aspects, the models and the file structures used for the entire research process. 4.1Research phase 1: Build the speaker independent Sinhala speech recognizer for recognizing the digits. In this section the development of the speaker independent Sinhala speech recognizer is described, step by step. It includes the phonetic dictionary, language model, grammar file, acoustic speech database and the trained acoustic model creation. 4.1.1 Data preparation This system is a Sinhala speech recognition voice dial and since there is no such speech database which is done earlier was available, the speech has to be taken from the scratch to develop the system. Data collection The first stage of any speech recognizer is the collection of sound signals. Database should contain a variety of enough speakers recording. The size of the database is compared to the task we handle. For this application only little number of words was considered. This research aims only the written Sinhala vocabulary that can be applied for voice dialing. Altogether twelve words were considered with the ten numbers including two initial calling words â€Å"amatanna† and â€Å"katakaranna†. Here the Database has two parts, the training part and the testing part. Usually about 1/10th of the full speech data is used to the testing part. In this research 3000 speech samples were used for training and 150 speech samples were used for testing. Speech database Before collecting data, a speech database was created. The database was included with the Sinhala speech samples taken from variety of people who were in different age levels. Since there was no such database published anywhere for Sinhala language relevant for voice dialing, speech had to be collected from Sinhala native speakers. Prompt sheet To create the speech database, the first step was to prepare the prompt sheet having a list of sentences for all the recordings. Here it used 100 sentences that are different from each other by generating the numbers randomly. 50 sentences are starting with the word â€Å"amatanna† while the other half is starting with the word â€Å"katakaranna†. The prompt sheet used for this research is given in the Appendix A. Recording The prepared sentences in the prompt sheet were recorded by using thirty (30) native speakers since this is speaker independent application. The speakers were selected according to the age limits and divided them into eight age groups. Four people were selected from each group except one age group. Two females and two males were included into each age group. One group only contained two people with one female and one male. Each speaker was given 100 sentences to speak and altogether 3000 speech samples were recorded for training. The description of speakers such as gender and age can be found in Appendix A. If there was an error in the recording due to the background noise and filler sounds, the speaker was asked to repeat it and got the correct sound signal. Since the proposed system is a discrete system, the speakers have to make a short pause at the start and end of the recording and also between the words when they were uttered. Speech was recorded in a quiet room and the recordi ngs were done at nights by using a condenser recorder microphone. The sounds were recorded under the sampling rate of 44.1 kHz using mono channel and they were saved under *.wav format. Sampling frequency and format of speech audio files Speech recording files were saved in the file format of MS WAV. The â€Å"Praatâ€Å" software was used to convert the 44.1 kHz sampling frequency signals to 16 kHz frequency signals since the frequency should be 16kHz of the training samples. Audio files were recorded in a medium length of 11 seconds. Since there should be a silence in the beginning and the end of the utterance and it should not be exceeded 0.2 seconds, the â€Å"Praat† software was used to edit all 3000 sound signals. 4.1.2 Pronunciation dictionary The pronunciation dictionary was implemented by hand since the number of words used for the voice dialing system is very few. It is used only 12 words from the Sinhala vocabulary. To create the dictionary, the International Phonetic Alphabet for Sinhala Language and the previously created dictionaries by CMU Sphinx were used. But the acoustic phones were taken mostly by studying the different types of databases given by the Carnegie Mellon University’s Sphinx Forum (CMU Sphinx Forum). Two dictionaries were implemented for this system. One is for the speech utterances and the other one is for filler sounds. The filler sounds contain the silences in the beginning, middle and at the end of the speech utterances. The attachment of the two types of dictionaries can be found on the Appendix A. They are referred to as the languagedictionaryand thefiller dictionary. 4.1.3 Creating the grammar file The grammar file also created by hand since the number of words used for the system is very few. The JSGF (JSpeech Grammar Format) format was used to implement the grammar file. The grammar file can be found in Appendix A. 4.1.4 Building the language model Word search is restricted by a language model. It identifies the matching words by comparing the previously recognized words by the model and restricts the matching process by taking off the words that are not possible to be. N-gram language model is the most common language models used nowadays. It is a finite state language model and it contains statistics of word sequences. In search space where restriction is applied, a good accuracy rate can be obtained if the language model is a very successful one. The result is the language model can predict the next word properly. It usually restricts the word search which are included the vocabulary. The language model was built using the cmuclmtk software. First of all the reference text was created and that text (svd.text) can be found in Appendix A. It was written in a specific format. The speech sentences were delimited byandtags. Then the vocabulary file was generated by giving the following command. text2wfreq svd.vocab Then the generated vocabulary file was edited to remove words (numbers and misspellings). When finding misspellings, they were fixed in the input reference text. The generated vocabulary file (svd.vocab) can be found in the Appendix A. Then the ARPA format language model was generated using these commands. text2idngram -vocab svd.vocab -idngram svd.idngram idngram2lm -vocab_type 0 -idngram svd.idngram -vocab svd.vocab –arpa svd.arpa Finally the CMU binary of language model (DMP file) was generated using the command sphinx_lm_convert -i svd.arpa -o svd.lm.DMP The final output containing the language model needed for the training process is svd.lm.dmp file. This is a binary file. 4.1.5Acoustic model Before starting the acoustic model creation, the following file structure was arranged as described by the CMU Sphinx tool kit guide. The name of the speech database is â€Å"svd† (Sinhala Voice Dial). The content of these files is given in Appendix A. svd.dic -Phonetic dictionary svd.phone -Phoneset file svd.lm.DMP -Language model svd.filler -List of fillers svd _train.fileids -List of files for training svd _train.transcription -Transcription for training svd _test.fileids -List of files for testing svd _test.transcription -Transcription for testing All these files were included in to one directory and it was named as â€Å"etc†. The speech samples of wav files were included in to another directory and named it as â€Å"wav†. These two directories were included in to another directory and named it using the name of the database (svd). Before starting the training process, there should be another directory that contains the â€Å"svd† and the required compilation package â€Å"pocketsphinx†, â€Å"sphinxbase† and â€Å"sphinxtrain† directories. All the packages and the â€Å"svd† directory were put into another directory and started the training process. Setting up the training scripts The command prompt terminal is used to run the scripts of the training process. Before starting the process, terminal was changed to the database â€Å"svd† directory and then the following command was run. python ../sphinxtrain/scripts/sphinxtrain –t svd setup This command copied all the required configuration files into etc sub directory of the database directory and prepared the database for training. The two configuration files created were feat.params and sphinx_train.cfg. These two are given in Appendix A. Set up the database These values were filled in at configuration time. The Experiment name, will be used to name model files and log files in the database. $CFG_DB_NAME = svd; $CFG_EXPTNAME = $CFG_DB_NAME; Set up the format of database audio Since the database contains speech utterances with the ‘wav’ format and they were recorded using MSWav, the extension and the type were given accordingly as â€Å"wav† and â€Å"mswav†. $CFG_WAVFILES_DIR = $CFG_BASE_DIR/wav; $CFG_WAVFILE_EXTENSION = wav; $CFG_WAVFILE_TYPE = mswav; # one of nist, mswav, raw Configure Path to files This process was done automatically when having the right file structure in the running directory. The naming of the files must be very accurate. The paths were assigned to the variables used in main training of models. $CFG_DICTIONARY = $CFG_LIST_DIR/$CFG_DB_NAME.dic; $CFG_RAWPHONEFILE = $CFG_LIST_DIR/$CFG_DB_NAME.phone; $CFG_FILLERDICT = $CFG_LIST_DIR/$CFG_DB_NAME.filler; $CFG_LISTOFFILES = $CFG_LIST_DIR/${CFG_DB_NAME}_train.fileids; $CFG_TRANSCRIPTFILE = $CFG_LIST_DIR/${CFG_DB_NAME}_train.transcription; $CFG_FEATPARAMS = $CFG_LIST_DIR/feat.params; Configure model type and model parameters The model type continuous and semi continuous can be used in pocket sphinx. Continuous type is used for continuous speech recognition. Semi continuous is used for discrete speech recognition process. Since this application use discrete speech the semi continuous model training was used. #$CFG_HMM_TYPE = .cont.; # Sphinx 4, Pocketsphinx $CFG_HMM_TYPE = .semi.; # PocketSphinx $CFG_FINAL_NUM_DENSITIES = 8; # Number of tied states (senones) to create in decision-tree clustering $CFG_N_TIED_STATES = 1000; The number of senones used to train the model is indicated in this value. The sound can be chosen accurately if the number of senones is higher. But if we use too much senones, then it may not be able to recognize the unseen sounds. So the Word Error Rate can be very much higher on unseen sounds. The approximate number of senones and number of densities is provided in the table below. Configure sound feature parameters The default parameter used for sound files in Sphinx is a rate of 16 thousand samples per second (16KHz). If this is the case, then the etc/feat.params file will be automatically generated with the recommended values. The Recommended values are: # Feature extraction parameters $CFG_WAVFILE_SRATE = 16000.0; $CFG_NUM_FILT = 40; # For wideband speech its 40, for telephone 8khz reasonable value is 31 $CFG_LO_FILT = 133.3334; # For telephone 8kHz speech value is 200 $CFG_HI_FILT = 6855.4976; # For telephone 8kHz speech value is 3500 Configure decoding parameters The following were properly configured in theetc/sphinx_train.cfg. $DEC_CFG_DICTIONARY = $DEC_CFG_BASE_DIR/etc/$DEC_CFG_DB_NAME.dic; $DEC_CFG_FILLERDICT = $DEC_CFG_BASE_DIR/etc/$DEC_CFG_DB_NAME.filler; $DEC_CFG_LISTOFFILES = $DEC_CFG_BASE_DIR/etc/${DEC_CFG_DB_NAME}_test.fileids; $DEC_CFG_TRANSCRIPTFILE = $DEC_CFG_BASE_DIR/etc/${DEC_CFG_DB_NAME}_test.transcription; $DEC_CFG_RESULT_DIR = $DEC_CFG_BASE_DIR/result; # These variables, used by the decoder, have to be user defined, and # may affect the decoder output $DEC_CFG_LANGUAGEMODEL_DIR = $DEC_CFG_BASE_DIR/etc; $DEC_CFG_LANGUAGEMODEL = $DEC_CFG_LANGUAGEMODEL_DIR/ ${CFG_DB_NAME}.lm.DMP; Training After setting all these paths and parameters in the configuration file as described above, the training was proceeded. To start the training process the following command was run. python ../sphinxtrain/scripts/sphinxtrain run Scripts launched jobs on the machine, and it took few minutes to run. Acoustic Model After the training process, the acoustic model was located in the following path in the directory. Only this folder is needed for the speech recognition tasks. model_parameters/svd.cd_semi_200 We need only that folder for the speech recognition tasks we have to perform. 4.1.6Testing Results 150 speech samples were used as testing data. The aligning results could be obtained after the training process. It was located in the following path in the database directory. results/svd.align 4.1.7Parameters to be optimized Word error rate WER was given as a percentage value. It was calculated according to the following equation Accuracy Accuracy was also given as a percentage. That is the opposite value of the WER. It was calculated using the following equation To obtain an optimal recognition system, the WER should be minimized and the accuracy should be maximized. The parameters of the configuration file were changed time to time and obtained an optimal recognition system where the WER was the minimum with a high accuracy rate. 4.2Research phase 2: Build the voice dialing mobile application. In this section, the implementation of voice dialer for android mobile application is described. The application was developed using the programming language JAVA and it was done using the Eclipse IDE. It was tested in both the emulator and the actual device. The application is able to recognize the spoken digits by any speaker and dial the recognized number. To do this process the trained acoustic model, the pronunciation dictionary, the language model and the grammar files were needed. The speech recognition was performed by using these models in the mobile device itself by using the pocketsphinx library. It is a library written in C language to use for embedded speech recognition devices in Android platform. The step by step implementation and integration of the necessary components were discussed in detail in this section. Resource Files When inputting the resource files to the Android application, they were added in to theassets/directory of the project. Then the physical path was given to make them available for pocketsphinx. After adding them, the Assets directory contained the following resource files. Dictionary svd.dic svd.dic.md5 Grammar digits.gram digits.gram.md5 menu.gram menu.gram.md5 Language model svd.lm.DMP svd.lm.DMP.md5 Acoustic Model feat.params feat.params.md5 mdef mdef.md5 means means.md5 mixture_weights mixture_weights.md5 noisedict noisedict.md5 transition_matrices transition_matrices.md5 variances variances.md5 Assets.lst models/dict/svd.dic models/grammar/digits.gram models/grammar/menu.gram models/hmm/en-us-semi/feat.params models/hmm/en-us-semi/mdef models/hmm/en-us-semi/means models/hmm/en-us-semi/mixture_weights models/hmm/en-us-semi/noisedict models/hmm/en-us-semi/sendump models/hmm/en-us-semi/transition_matrices models/hmm/en-us-semi/variances models/lm/svd.lm.DMP Setup the Recognizer First of all the recognizer should be set up by adding the resource files. The model parameters taken after the training process were added as the HMM in the application. The recognition process was depended mainly on this resource files. Since the grammar files and the language model were added as assets, these two can be used for the recognition process of the application as well as the HMM. The utterances can be recognized from either the grammar files or language model. The whole process is coded using the Java programing language. 4.3Architecture of the developed Speech Recognition System

Does It Matter? by Siegfried Sassoon Essay -- Papers

Does It Matter? by Siegfried Sassoon "Does It Matter" is an angry, heavily ironic war poem written in 1917 by the famous World War I poet Siegfried Sassoon. On first read, it appears that the poet is addressing an injured soldier who has returned from the trenches, asking this man whether or not it is important that he is missing limbs and sight, instead highlighting the virtues of the world and offering these as a remedy for his pains. The poem is written in a nursery-rhyme-like structure, where there is an obvious rhyming pattern and distinctive rhythm, and where many lines even have an equal number of syllables. For such a complicated subject matter, the poem is also rather brief - very succinct at just three stanzas comprising of five lines each. The opening lines of each stanza begin similarly with a question asked but never answered: Does it matter - losing your legs?... There is a lot to discuss even here. Firstly, we notice that the question itself is not answered - Sassoon does this very deliberately. Of course he goes on to back his rather naà ¯ve point by highlighting the constructive aspects of living without the use of one's legs, but he leaves a great void here, like the unfilled silence after a particularly awkward question. We, as readers, can easily answer the question of whether or not it matters in our own minds - of course it matters, and it matters further when we shake our heads at the sinister complacency exhibited throughout the remainder of the poem. Sassoon intentionally utilises this almost child-like perspective (given more strength through his nursery-rhyme structure and know-no-better naivet... ...stion at the beginning of each stanza - does it matter? The poem is turned on its head and, just maybe, the soldier complies with Hamlet's statements: "To die, to sleep / No more". How, then, does this fit in with the rest of the poem? Well, it soon becomes clear to me that the form of Utopia the narrator describes in the three stanzas is hard to visualise even today, and we must remember that the poem is set during a major and bloody war. This form of Utopia, then, can exist only beyond reality - in a paradise found after death. It would appear, then, that this is a goodbye note from a dying soldier, seeking comfort as he withers away amidst the fighting in thoughts of the "undiscovered country", and finally exhaling his last breath, taking his afflictions away with him to a place where 'people will always be kind'.

Male Identity and Greek Mythology’s Hercules in Films Essay

Famed for his mighty muscles, Hercules was the son of the mortal woman Alcmene and the god Zeus. Hercules performed many legendary feats of strength, the first of which came as an infant: when Zeus’s wife Hera placed two serpents in his crib, Hercules quickly strangled them. After he had grown to manhood Hera got revenge by driving Hercules briefly mad, causing him to slay his own wife and children. As penance Hercules performed his famous 12 labors (or tasks), which included killing the Hydra, capturing Cerberus the dog, and cleaning the stables of Augeas. Hercules appears in many ancient Greek stories and is one of mythology’s best-known heroes. Mythologies are fantasies that have the power to endure in people’s minds and culture through time. For this, mythological stories and characters have been part of substantial themes of films in the history of filmmaking. They have a significant place in the world of filmmaking because mythological stories and characters have the ample amount of mystery and magic that has the ability to capture the audience’s attention and imagination. Storylines may differ or be similar to the myths itself but the essence of the mythological character exudes. One such masculine and mythological character is the half-man half-god Greek hero, Hercules. This mythological character with extraordinary physical strength has been featured and appeared in numerous films in the big screen and television. With the different depictions of Hercules, this paper then is an assessment on how he was portrayed and presented in films. The materials considered for this study were Disney’s animated film â€Å"Hercules† released on 1997 and Roger Young’s miniseries entitled â€Å"Hercules. Half Man. Half God. All Power. † released on 2004 by the Hallmark Channel. Hercules on Disney’s Animated Film According to the Big Cartoon Database (n. d. ) â€Å"Hercules† was a â€Å"Disney update on classic mythology†, an animated film about his journey towards finding a place where he belonged. Here, Hercules, the son of Greek gods Zeus and Hera was born god-like strength in Olympus, the home of the gods. When Hades, the God of the Underworld, learns that his plan of domination in the future will be affected because of Hercules’ existence, he summons his two followers, Pain and Panic, de-immortalize the child Hercules and kill him in the mortal world. Pain and Panic, failed in their mission and only succeeds in making Hercules mortal. No mortal beings are allowed to dwell in Olympus, which leaves Hercules in the care of Alcmene and Amphitryon, the childless mortal couple who found him on the bushes. Hercules later grows into a misfit adolescent because of his extraordinary strength that always gets him in the center of chaos. His adoptive parents later tells him of his past and a medal found with him that is a link to Zeus, his father. Hercules then journeys to the temple of the gods. Zeus appears and confirms Hercules thoughts. Zeus tells him that the only way that Hercules can enter Olympus again is that if he becomes an earthly hero to gain his godliness. The adolescent Hercules then goes on a pursuit of a hero status with the help and instructions from the satyr, Philoctetes. He achieves the hero status later in adulthood but is perplexed because he still is not a god. When Hades learns that Hercules still lives, he orders his soul-bound follower Megara to deceive Hercules. Hades tries to block his path to being a God with calamities and creatures like the multi-headed, Hydra. Hercules becomes a God when he sacrifices himself for Megara. The animated film ends with Hercules choosing to stay in the mortal world to be with Megara. The most obvious difference of the animated film from the original Greek myth of Hercules is that the dreadful factors of his origins were revised and some components of modern day popular culture were utilized. According to Royalty. nu (n. d. ), Hercules was born to Alcmene, wife of Amphityron, but fathered by the Greek God Zeus. Zeus deceived Alcmene into thinking that he was Amphitryon on a night when the real Amphitryon was away. Hera, Zeus’ wife loathed Hercules and tried several times to try and kill Hercules, much unlike in the animated film, where Hera as Hercules’ mother doted on him. The animated film focused on Hercules’ early life; the famous ten labors of Hercules and the other half of his life was not included. The circumstances of the Greek myth characters like Megara, Zeus, Hera, Aphitryon, Alcmene and the rest included in the film were greatly modified to fit the storyline of the animated film. Apart from that Hercules’ twin brother, Iphicles was excluded in the storyline. Greek mythology portrays Hercules as a character with â€Å"low intelligence and terrible temper†(Royalty. nu, n. d. ). Although there was much difference from the original Greek myth, Hercules’ character as half-man half-god hero with weaknesses was still portrayed. Hercules’ character in the animated film was a bit naive but he was not quick to loose his temper. Audiences were also given a taste of Hercules’ famous battles with calamities and creatures. Hercules on Roger Young’s Miniseries According to FilmAffinity (n. d. ), this Hercules miniseries is about â€Å"the gifted child born of a blood greater than mortal who would become the most powerful of all gods†. Roger Young’s miniseries starts with how Hercules was conceived. Similar to the Greek myth, the dissolute God Zeus deludes the Princess of Thebes, Alcmene, into thinking that he is the princess’ husband, Amphitryon, and then forces himself on Alcmene on a night where the princess was awaiting her husband’s return. When Alcmene gives birth to twin boys, Hercules and Iphicles, Alcmene and Amphitryon are perplexed on which baby is fathered by Zeus and whose is Amphitryon. They later realize that Hercules is Zeus’ son when he kills the snakes with his bare hands an infant. Hercules develops into a lumbering young man, â€Å"rejected by his mother, envied by his brother Iphicles and loathed by Zeus’ wife Hera† (FilmAffinity). Similar to the Greek myth while Alcmene reserves no love for Hercules, he grows up with Amphitryon doting on him and teaching him. Hercules then falls for Megara but was rejected. Their brief connection results to a child. When he lost his temper and accidentally hurt his teacher Linus during a class, Amphitryon sends far away to be taught under the care and instruction of a centaur, Kiron. Hercules becomes an agile adult and more capable to handle his great strength. He then was married to Megara after he helps the king from the creature Hydra. Megara and her sons, turn out to be â€Å"tools of the vengeful Hera, plotting against him and initiating events that lead to his banishment from his people† (FilmAffinity). To atone the punishment that he deserved in killing his own children, Hercules agrees when he was given difficult challenges which were set out to destroy him. With his ally Linus, he travels the Stymphalian Swams to the River styx of the underworld, faced with challenges and monstrous creatures that was arranged to kill him. Hercules willingly continues on this journey that afterward made him a â€Å"legend on Earth and achieve immortality in the heavens† (FilmAffinity). With the storyline of the miniseries, it was clear that the filmmakers focused on the raging politics between the noble mortals and their want of power and control. It is important to note that this miniseries was one of the few productions that embarked on Hercules true conception with regards to the original Greek myth. Hercules’ character of recklessness and short temper was portrayed true to the original Greek myth during his younger adult days. There were slight alterations unto how certain events happened to the characters but the miniseries was in a way loyal to the Hercules’ myth. For example, Hercules develops a more profound thinking later on the miniseries but there was no hint of that according to the Greek Myth. The Gods Hera and Zeus were not given much attention during the miniseries and only appeared briefly. The supposed raging battle between Hera and Zeus was implied but not shown comprehensively. Conclusion In conclusion, both films were individual depictions of Hercules’ character as the legendary Greek hero. He is a paragon of action and masculinity, and thus embodies characteristics such as great strength, great courage, and great appetites, including erotic adventures with both women and boys or young men. These qualities did not prevent him from being regarded as a playful figure that used games to relax from his labors and played a great deal with children. Aelian, while he was a champion and a great warrior, he was not above cheating and using any unfair trick to his advantage. However, he was renowned as having â€Å"made the world safe for mankind† by destroying many dangerous monsters, and he was also held up as an example for never having attacked first, but for having conquered all merely by defending himself when attacked, and protecting the helpless and distraught. His self-sacrifice obtained him the ascent to the Olympian realms and he was welcomed by the gods. He represents a balanced, complete energetic principle of the masculine, partaking of both light and dark influences. Historically, the strong American presence in post-war Italy is evident in the very physical presence of Steve Reeves as Hercules. Moreover, the film’s masculinization of revenge also seems to reflect the ideals of post-war society. Instead, as the character of Hercules suggests, it is more important for the wandering male, and also the foreign influence, to be incorporated into the domestic sphere. Hercules preserves the morality at the centre of the family. Paradoxically, however the interference of Hercules also ensures continued dependence on foreign influence and protection. Each film represented the filmmakers approach on representing a storyline associated with Hercules’ myth. Disney may have chosen to emphasize more on Hercules’ journey to his fate in a more conducive way that was appealing since their audiences are young people. Roger Young’s miniseries took more of a similar likeness to the original myth although alterations were made on how events were played because the storyline demanded that it be so. Works Cited FilmAffinity. Hercules (TV). FilmAffinity – MovieAffinity. Retrieved November 2, 2006 from http://www. filmaffinity. com/en/film260353. html The Big Cartoon Database. Hercules Story Details. The Big Cartoon Database. Retrieved November 2, 2006 from http://www. bcdb. com/cartoon_synopsis/6-Hercules. html Royalty. nu. Hercules, Young Hercules. The Gordon Knot Webring. Retrieved November 2, 2006 from http://www. royalty. nu/legends/Hercules. html

Obesity Should Unhealthy Food Be Taxed - 951 Words

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However, I know it is the unhealthiest food and the main cause of obesity in the United States. On the other hand, the U.S. government feels that is important to intervene in junk food lover’s lives to help them to improve their health and their food choices. In order to combat the obesity and other health problems that junk food causesRead MoreJunk Food Should Be Taxed At A High Price856 Words   |  4 Pagestaxes on junk food to regulate the amount of junk food individuals buy. Many individuals believe that junk food should be taxed at a high price and that healthy foods should be cheaper. The selections, â€Å"Evolution’s Sweet Tooth† by Daniel E. Lieberman and â€Å"Bad Food? Tax It, and Subsidize Vegetables† by Mark Bittman, discuss the fact that many adults consume large amounts of unhealthy food products and that adults should eat more of healthy foods. The article, â€Å"Addiction to Unhealthy Foods Shouldn’t RequireRead MoreThe Effects Of Obesity On American Adults And Children1213 Words   |  5 PagesThe Effects of Obesity Obesity is on the rise in American adults and children. Over 78.6 million Americans are considered obese (CDC, 2014). Health experts believe the obesity crisis has become an epidemic that needs to be controlled. Today many efforts are being made by Federal and state governments and some major companies to combat obesity in adults and children. For example, some major companies are rewarding employees with cash incentives for exercising regularly and maintaining a healthyRead MoreEssay On Fighting Obesity Through Taxation1408 Words   |  6 PagesFighting obesity through taxation: Are fat-taxes effective? 1. Introduction The global growing number of obese among adults and children is alarming and is one of the biggest public health issues that health systems are facing (Laura Cornelsen et al. 2014). In 2014 adults overweight prevalence was estimated at 1.9 billion worldwide of these 600 million were obese and this number keeps increasing at a noticeable pace. Nearly one-thirds of the world population is obese or overweight and 41 millionRead MorePutting A Tax On Junk Food Essay1943 Words   |  8 Pagesparents and guardians would have to pay more for the food that they want. However, I personally don’t agree with this statement, from my perspective, putting a tax on junk food won’t necessarily eradicate the obesity and type 2 diabetes epidemics from overconsuming junk foods, but it will reduce the consumption by a certain amount, however it’s something that’s not going to happen overnight. This is similar to smoking in the sense that smoking is taxed because it’s p ernicious not only to the person concernedRead MoreThe Obesity Epidemic in the United States664 Words   |  3 Pagesa high obesity level. According to David Frum from CNN, except for Mexicans, American citizens are more likely to become obese than any other nationality. Some obese countries have enforced an extra high tax on fast foods and other high calorie foods, and many people believe that the U.S. should adopt the fat tax as well. According to Dictionary.com, the fat tax is â€Å"a tax imposed on or proposed for high-fat or otherwise unhealthy foodstuffs†. Although a tax on junk food could reduce obesity, the lowRead MoreThe Economics Of Obesity And Obesity1180 Words   |  5 PagesEconomics of Obesity Obesity’s presence has reached much larger magnitudes than ever before in human history. 33% of adults and above 20% of children in the U.S. are classified as obese as concluded by Duke University (â€Å"Over a Lifetime†). Although obesity appears to be strictly a medical problem, many new studies are showing that obesity is linked to numerous factors such as society, technology, politics, and economics. As a result of multifarious fields, reducing childhood obesity in the U.S. is