Author Box
Articles Categories
All Categories
Articles Resources

Audio Enhancement Vs Forensic Transcription

April 21, 2012 | Comments: 0 | Views: 143

Thanks to movies and shows like CSI and NCIS, people have unrealistic expectations about the audio enhancement capabilities of forensic audio examiners. In the world of fiction, not only can experts do the job with a click or two of the mouse, but they can make completely unintelligible speech completely clear and easy to understand.

In the real world, this is not how it works. Audio enhancement services are sometimes good for speech intelligibility, but more often than not, enhancement isn't all that great for intelligibility issues. A forensic audio examiner cannot enhance what is not there. If speech is masked by other noises that cover the same range of frequencies, eliminating those noises will also eliminate whatever speech is underneath it.

Audio enhancement is best suited for improving the listenability of a recording. If you were to record an interview for a documentary but discovered an electric buzzing noise or a loud constant humming sound, a forensic audio engineer could eliminate it or at least reduce it. Dog barking, car horns, doorbells and other noises can also often be removed leading to improved listenability of the interview.

If, on the other hand, your interview is covered up with TV noise or was recorded improperly or with poor quality equipment causing speech intelligibility to be sub par, enhancement techniques aren't likely to help much. The same goes for difficult-to-understand dialog due to a speech impediment, overlapping speech, inebriated speech, or heavy accents.

If your goal is to decipher what is said and a transcript is sufficient, a forensic transcription service is what you need. When it isn't possible for your recording to be improved and made easy to understand for your audience, subtitles or a transcript of the speech is the next best thing.

The professionals that are best suited to decipher marginally intelligible speech are forensic linguists, or more specifically, forensic phoneticians. Forensic linguists have advanced degrees and a strong background in phonetics and linguistics and are able to use special software to visually inspect the speech to help determine the words used.

This special software is a speech spectrogram. A spectrogram is basically a visual representation of the speech waveform. It is used to identify the speech sounds in a recording. When a person speaks, he makes sounds using various speech organs such as the lips, tongue, and hard and soft palates. These different sounds have names like plosive, fricative, and diphthong. Identifying them on a spectrogram can help the linguist determine which words are spoken, even if he can't be 100% certain when just listening to them.

The linguist also relies on his education to examine the linguistic aspects of dialog such as syntax, pragmatics, phonetics, and phonology to help determine what is being said or not said.

Forensic phoneticians also have experience with audio technology and speech enhancement software. Thus, when audio enhancement techniques are useful, the linguist, like the audio forensics expert, is able to apply them giving you the best of both worlds.

Forensic transcription services are unlike regular transcription services, and thus are much more expensive. You are hiring a forensic expert with advanced degrees to use specialized software and hardware to examine audio recordings. For clean audio, a general, legal, or medical transcriptionist can transcribe an hour of audio in four to six hours. One minute of marginally intelligible speech may take a forensic linguist a number of hours to transcribe. It all depends on the individual recording.

Before beginning work, the linguist will usually perform an evaluation in order to determine how much of the recording is likely to be successfully decoded, how long it will take, and how much the project will cost.

Textphonic Communications Inc. provides forensic audio and audio transfer services. In addition, we are a transcription and translation company. Our areas of expertise include general, legal, medicolegal, and forensic projects. Visit our site for more information about our audio enhancement and forensic transcription services.

Source: EzineArticles
Was this Helpful ?

Rate this Article

Article Tags:

Audio Enhancement


Forensic Audio


Speech Enhancement


Audio Forensics

In India, employment opportunities are set to grow by a good margin in the coming year, a phase which was started in the turn of the second decade of the 21st century. organisation, candidates with

By: Sarkariexam l Business > Careers Employment l April 01, 2013 lViews: 11705

Sometimes it is amazing to see that certain jobs can precipitate huge turnouts in the recruitment drives. It is as if thousands of people were waiting for the vacancy advertisements and the moment

By: Sarkariexam l Business > Careers Employment l December 30, 2012 lViews: 690

In recent times, jobs in healthcare segments have grown tremendously. It is anticipated that this growth curve will continue for the times to come. Various factors are responsible for this

By: Sarkariexam l Business > Career Advice l December 27, 2012 lViews: 446

Are you in a dilemma whether to choose web based CRM or not? If yes, don’t worry. You aren’t the sole person having this doubt.There are numerous firms trying to make out whether investing in a

By: Reneta Vasileva l Business > Customer Service l December 23, 2012 lViews: 409

If you think about it you will realize the fact that each business has its own set of risks that are involved in it.The trade secrets that you have and the information related to the business is what

By: brumbrum1 l Business > Risk Management l December 23, 2012 lViews: 263

As the time is changing, concierge management services are now growing despite the slowing economies of the world. The main reason of it is the need that is highly specific to the people who like to

By: willsmith10 l Business > Management l December 23, 2012 lViews: 333

Does outsourcing call center telemarketing make sense? We’ll explore further to find out. Learn more about why it makes sense to consider outsourcing your call center telemarketing services. We

By: daisyalicel Business > Outsourcingl November 27, 2012 lViews: 152

If you are trying to save money without depleting quality, customer service outsourcing can make sense. Find out the top six reasons why in this article.InSO is the industry leader in providing

By: sandra88l Business > Outsourcingl October 25, 2012 lViews: 207

Making a good first impression with clients is always an important goal for businesses, especially if you are running your own solo law firm. Here is how a call answering service can help your solo

By: Elizabeth L. Robinsonl Business > Outsourcingl April 27, 2012 lViews: 183

There are different options when it comes to an elevator company. Look to see what you should avoid.

By: Andrea Averyl Business > Outsourcingl April 26, 2012 lViews: 187

Online bookkeeping companies are now increasing in number. This is because the demand for their services has surged as more and more businesses are recognizing the better benefits they provide in

By: Jimmy Coxxl Business > Outsourcingl April 25, 2012 lViews: 200

Facility management can develop and maintain a variety of services throughout the entire life of a business. Businesses can include physical units such as complexes, buildings, schools, banks,

By: Natalie Eastaughl Business > Outsourcingl April 25, 2012 lViews: 204

Not all transcription services work within the same industries. Discover a few of the more popular types of transcription services and what type of projects they typically include.

By: Nuuk Larsenl Business > Outsourcingl April 23, 2012 lViews: 216

If you're considering the jump to outsourcing one or more transcription services, there are a few things to keep in mind. Here are a few tips to help you find the best provider to meet your needs.

By: Nuuk Larsenl Business > Outsourcingl April 20, 2012 lViews: 153

Don't believe that digital transcription is applicable only to a few professions. Online transcription with digital transfer provides a variety of benefits to professional, educational, legal and

By: Nuuk Larsenl Business > Outsourcingl April 20, 2012 lViews: 158

Discuss this Article

comments powered by Disqus