Tweet
Impulse Noise Filters (Attenuates Clicks, Ticks, Crackle, Snaps, Pops, Thuds, Static & Buzz)
Four Impulse Noise filters are provided in the DCArt10/DC Forensics10 suite. They are all found under the Filter sub-group called “Impulse”. The EZ Impulse Noise Filter provides you with a high degree of automation (adaptive techniques) to simplify the impulse noise reduction process, with the tradeoff of reduced user controllability. This is the “goto” filter of choice for most impulse noise reduction work. The Expert Impulse Noise filter provides a very high degree of adjustability for those who want to customize the system to their own personal preferences. Some people like create a custom impulse filter via multiple Expert Impulse Noise Filters in the multifilter with each one set to different modes and parameters. However, this impulse filter is difficult to use, especially for the casual user. The Narrow Crackle filter specializes in handling impulse noise having narrow pulse width. The Big Click Filter specializes in very large clicks and thuds only. All of these filters are non-linear algorithms used to eliminate pops, ticks, clicks, and crackles from audio recordings. It is also useful for the elimination of "static" interference from AM, FM, or Short Wave radio broadcasts. It can also be quite effective for attenuating high frequency line related “buzz” from certain recordings. All of these types of noise signals generally look like impulses (although sometimes referred to as "spikes"), and therefore the name “Impulse Noise Filter”. The algorithm essentially monitors for fast events, and when their value exceeds a threshold value, the algorithm blanks out the portion of the file wherein the fast event occurred, and re-inserts a waveform that is an approximation of the signal that likely would have occurred during the event. The phase of the inserted signal is aligned to match the point in time in the file where it is inserted so that there is no phase discontinuity, and therefore almost no artifact will be injected into the .wav file.
Four Impulse Noise filters are provided in the DCArt10/DC Forensics10 suite. They are all found under the Filter sub-group called “Impulse”. The EZ Impulse Noise Filter provides you with a high degree of automation (adaptive techniques) to simplify the impulse noise reduction process, with the tradeoff of reduced user controllability. This is the “goto” filter of choice for most impulse noise reduction work. The Expert Impulse Noise filter provides a very high degree of adjustability for those who want to customize the system to their own personal preferences. Some people like create a custom impulse filter via multiple Expert Impulse Noise Filters in the multifilter with each one set to different modes and parameters. However, this impulse filter is difficult to use, especially for the casual user. The Narrow Crackle filter specializes in handling impulse noise having narrow pulse width. The Big Click Filter specializes in very large clicks and thuds only. All of these filters are non-linear algorithms used to eliminate pops, ticks, clicks, and crackles from audio recordings. It is also useful for the elimination of "static" interference from AM, FM, or Short Wave radio broadcasts. It can also be quite effective for attenuating high frequency line related “buzz” from certain recordings. All of these types of noise signals generally look like impulses (although sometimes referred to as "spikes"), and therefore the name “Impulse Noise Filter”. The algorithm essentially monitors for fast events, and when their value exceeds a threshold value, the algorithm blanks out the portion of the file wherein the fast event occurred, and re-inserts a waveform that is an approximation of the signal that likely would have occurred during the event. The phase of the inserted signal is aligned to match the point in time in the file where it is inserted so that there is no phase discontinuity, and therefore almost no artifact will be injected into the .wav file.