Perth WA's leading CD Mastering and Audio Forensics Firm
|
|
Procopy provides forensic audio services to law enforcement agencies and other accredited organisations.
Forensic basics
* The goal of much forensic audio treatment is to make speech more understandable by improving the quality of an audio recording so it may be used for a transcript or playback at a trial
* This usually means improving voice quality in recordings with a very poor signal to noise ratio
* Speech is often masked by buzzes, high or low frequency noises and impulse noises such as pops and crackles
* Sometimes the recording device also introduces problems such as tape saturation, clipping, hum or distortion
* The problems are analysed initially by trained ear (an art in itself). Then the audio is digitised, and the problems are sampled and measured through graphical representation
* Filters are used to enhance the audio to a point where transcription is possible and/or the target sound or sounds can be heard more clearly
For more information please Click Here
|
|
