Foenics - FPI's - Buzz-Removal

Buzz-Removal

Buzz-Removal is optimized for the removal of intelligibility and listenability, reducing humming and buzzing noises.

The frequency range between 20 and 260 Hz is shown in a high resolution display, allowing a fast manual detection of the fundamental frequency of the disturbance.

If the user wishes to use the Buzz-Removal FPI in its automatic mode, the signal is analyzed and the fundamental frequency of the distortion is detected. Depending on this frequency, a complete batch of harmonically related filters is calculated. The user can define the number of filters that are used. The underlying adaptive algorithm eliminates the corresponding number of mostly dominating intelligibility reducing harmonics. Burst-Removal FPI also allows the processing of signals with a frequency varying buzz distortion. These frequency changes are handled automatically using the frequency tracking function, without further adjustments by the forensic analyst.