Technology is amazing. In a very short span of time, we have moved from the age of analogue audio and video to digital images and sound – and we are still growing. With modern devices, we can tune into and take on even the most subtle tones, such as violin strings squeak echo in the middle of the orchestra.
Unfortunately, despite all our advances in audio, they work in forensic audio still find themselves in a situation where a very important message somehow did not come out the same way it went in. Companies such as Cognitech can get rid of all that they can create the perfect audio recording product but there are many factors that go into the crisp, clear audio end.
Masking sound may be the biggest cause for many people. Not only from the ambient sound of the room and the surrounding environment, which can make some recordings seem totally useless but from electronic interference in that area jumbles of equipment and create issues that can not often be repaired on-site.
Sometimes the disorder is not recognized until after the fact when it was too late to fix the problem.
Of course, there is always the equipment to fix problems with other equipment; audio enhancement and noise reduction have been used for many years to deal with issues related to interference and noise masking.
Audio enhancement techniques have been useful both in a commercial setting – where lecturers and other speakers can have a discussion or explanation cleaned – or in situations where audio forensics that could mean the difference between conviction or acquittal.