Audiolex Australia

Sound Language Evidence

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Serbian Linguistics/Inter
Audio and Video Enhancement
 
1.     Audio   (from any source)
Tapes and other recordings can be enhanced to try to improve both the "listenability" and intelligibility of poor quality recordings - potential problems can arise from:
 
  • Overtalk
  • Poor quality equipment
  • Equipment or media malfunction
  • Distance from microphone
  • Interference (e.g. GSM noise)
  • Background or competing noise
  • Damaged tape or disc
  • Disguised or changed voice
  • Wrong speed
  • Copy of a copy of a copy .....

 
Noise Removal - depending upon the nature of the noise contamination of a noisy recording, it is often possible to remove extraneous clicks, hiss, hum and some background noise. Results can sometimes be extremely dramatic! However, it must also be understood that not all recordings are amenable to enhancement.


Selective Amplification - quieter areas of a recording (for example the voice of the distant speaker in a telephone conversation) can be amplified sufficiently to render speech or other sounds intelligible, whilst not increasing the amplitude of the louder or nearer voices or sounds.

Please note: the transcription of enhanced recordings can be an art in itself, and often requires specialised equipment.  It is therefore often more cost- amd time- effective for us to transcribe such recordings rather than simply enhance them. 
 
2.     Video   (from any source)
 
For video recordings, in addition to the procedures listed above, we can also carry out:
 
  • Clarification
  • Highlighting
  • Obscuring
  • De-multiplexing (from CCTV)
  • Converging (from CCTV)
  • Decoding proprietary digital video from mewer DVT CCTV systems
  • Magnify video to full screeen, or portion , giving picture in picture
  • Reverse projection and superimpostion for height analysis
  • Onscreen text and titles
  • Technical metering of picture / signal elements
  • Archiving of material and documentation
  • Exchange of electronic files with clients worldwide via the internet using industry standard 128 bit encryption