FORENSIC PHONETICS - OUR SERVICES


Sprakab offers the following services within the field of forensic phonetics. All services can be delivered express or within seven days, if necessary.

1) Speech identification
2) Speech profiling
3) Clean-up of recording
4) Transcription of recording
5) Analysis of recording
6) Background analysis
7) Transfers
8) Consultant assignments

1) Speech identification
Speech identification, or speech verification may be carried out if there are two or more recordings of one or more individuals. Using this method, you may obtain clues as to whether an unknown speaker on a recording is the same individual as a previously identified speaker on another recording. You may also compare two or more completely unknown speakers with each other to find out who it is or if several speakers are in fact one and the same person.
Speech identification is a good tool if, for example, a threat has been recorded as well as an additional recording of a suspect. In such a case, it is possible to discover whether the suspect's speech is similar to the speech in the recorded threat. Thus you can establish whether it is one and the same person.

2) Speech profiling
Speech profiling means to analyse an individual's language background to obtain a general idea of the origin of an individual. Using speech profiling, the dialectal background of a speaker may be analysed. If the person has a language other than Swedish as his/her mother tongue, an accent analysis is applied to find out his or her actual mother tongue. When we analyse a foreign accent our forensic phonetics experts work with an individual who has the language in question as his/her mother tongue. Apart from dialects and accents speech profiling is used to reveal whether an individual has any specific speech impediments or other physical characteristics that affect his/her speech. Using this technique, it is also possible to reveal linguistic characteristics of an individual such as regularly repeated grammatical errors, incorrect pronunciation or recurrent words and phrases in a speaker's linguistic repertoire.

3) Clean-up of recording
Often, a recording may contain disturbances. These noise disturbances may sometimes be so major that it is not possible to distinguish what is said on the recording. We are able to clean up a recording of such disturbances by a number of processes so that you can actually hear what is being said on the recording. In conjunction with, for instance, a clean-up of recording we can also transcribe what is said on the recording.

4) Transcription recording
In conjunction with, for instance, a clean-up of a recording we can transcribe what is said on the recording. Transcriptions can be done for all the 200 or so languages that are available to Sprakab. In addition, if the customer wants a recording transcription translated to another language, we can also arrange that.

5) Analysis of recording

Using technical analyses, we can determine whether a digital recording is an original or if the recording has been tampered with. For instance, if someone has tried to change the word order or remove phrases from a recording. On an analogue recording, Sprakab can also verify what medium was used originally, if this information is unknown.

6) Background analysis
Sometimes the background noise in a recording may be of interest, for example, the noise from a TV. In successful cases, you can determine at what time/date a particular recording was made, based on the background noise. Even the location of the recording can be analysed in the same way with the aid of background noise, for instance, a recording made at a railway station or another place that has a distinguishing sound atmosphere. The sound of another person talking in the background of the recording can also be analysed in favourable cases.

7) Transfers
Sprakab can transfer all types of recordings between most formats available. Do you have a recording on a micro-cassette that you want in MP3 format? Or do you want to be able to listen to a recording on a regular CD player but you only have it on a Real Audio file? We can fix it. We can convert files to all the regular sound file formats and to a large number of less common formats. In addition, we can digitalise your old analogue recordings and transfer these to different media. In certain cases, we can transfer video recordings between analogue and digital media.

8) Consultant assignments
Ultimately, Sprakab offers consultant services within the field of speech recordings. We provide advice about recording equipment, equipment set-up in rooms where recordings will take place and we can give hints and tips about how to obtain an optimum recording in poor conditions. In addition, we can assist with theoretical advice surrounding voice confrontations.

SPRAKAB FORENSIC PHONETICS

fonetik@sprakab.com

Phone: + 46-8-546 403 00

Forensic phonetics
- our services