click removal -Sound Forge - PC - MAGIX Community Forums Archive

Subject:click removal Posted by: bonsai Date:10/31/1999 1:11:00 AM if anyone has the click removal pugin, what is the best setting for click shape and max click level? i have tried different variations and dont notice much of a difference. does it take extreme conditions for a noticable effect? please email me if you can help. thanx in advance will
Subject:Re: click removal Reply by: JF Date:11/1/1999 10:48:00 AM For some material, these settings don't seem to affect the output very much...it usually just works (or just doesn't work, on occasion...) I would say that 90% of the time, one of the included factory presets will be all you need and spending alot of time tweaking parameters is not necessarily worthwhile. Here is what the long-winded Sonic Foundry documentation states: From the online help: The "Click Shape" setting determines the type of clicks the algorithm detects. In most cases, it should be left between 4 and 6. With settings above 6, very small, high-frequency clicks will be more easily detected. With settings below 4, larger, low frequency pops will be detected more easily. For very old acoustic (all mechanical) recordings, a setting of 2 may be necessary to detect clicks. Since the clicks from old 78s are generally made up of a lower frequency distribution than LPs, settings of 3 and 4 tend to detect them better. The clicks from LPs with a greater amount of high-frequency content are better detected with larger settings such as 6 or 7. The "Max Click Size" setting establishes the longest click that will be detected by the algorithm. In most cases, the default setting of 3 milliseconds works well. Lower settings can be useful if you want to remove only small clicks or crackling. However, if your file has many cymbal hits, snare drums, castanets, etc they could be misinterpreted as clicks. Lower settings (such as 1.0 ms) will prevent these fast attacks from being removed. If you look at the wave form of castanets, brushes on high-hat cymbal, blocks, maracas, or claves (and numerous others), you will see that their sound waves actually look very similar to clicks, but last for a slightly longer time. If your material has these kinds of percussive sounds, the size setting might need to be about 0.8 ms to protect them. However, when this setting is set to a low value, you will often have to manually remove larger pops that are missed by the algorithm. You will have to choose a setting based on how much loss is acceptable and how much time you can spend manually de-clicking these missed clicks. "Noise Level": The Low and Medium settings split the audio input into noise and non-noise portions, and clicks are removed from only the noisy part of the audio. These settings often produce fewer artifacts; however, these settings increase usage of the computer’s processor, and some users will not be able to preview in real-time. When set to High, the algorithm will not try to split the audio into noisy and non-noisy parts before removing clicks. The high setting uses less of the computer’s processing power, so this setting is the recommended setting for slower computers. However, some source material (especially low voice and horns) can sometimes cause the detection algorithm to misinterpret data and produce audible artifacts.Use the High setting for low thumping that may not be corrected by the Low and Medium settings. will wrote: >>if anyone has the click removal pugin, what is the best >>setting for click shape and max click level? >>i have tried different variations and dont notice much of a >>difference. does it take extreme conditions for a noticable >>effect? >>please email me if you can help. >>thanx in advance >>will >>

For some material, these settings don't seem to affect the output
very much...it usually just works (or just doesn't work, on
occasion...) I would say that 90% of the time, one of the included
factory presets will be all you need and spending alot of time
tweaking parameters is not necessarily worthwhile. Here is what the
long-winded Sonic Foundry documentation states:

From the online help:
The "Click Shape" setting determines the type of clicks the algorithm
detects. In most cases, it should be left between 4 and 6.
With settings above 6, very small, high-frequency clicks will be more
easily detected. With settings below 4, larger, low frequency pops
will be detected more easily. For very old acoustic (all mechanical)
recordings, a setting of 2 may be necessary to detect clicks. Since
the clicks from old 78s are generally made up of a lower frequency
distribution than LPs, settings of 3 and 4 tend to detect them
better. The clicks from LPs with a greater amount of high-frequency
content are better detected with larger settings such as 6 or 7.

The "Max Click Size" setting establishes the longest click that will
be detected by the algorithm. In most cases, the default setting of 3
milliseconds works well.
Lower settings can be useful if you want to remove only small clicks
or crackling. However, if your file has many cymbal hits, snare
drums, castanets, etc they could be misinterpreted as clicks. Lower
settings (such as 1.0 ms) will prevent these fast attacks from being
removed.
If you look at the wave form of castanets, brushes on high-hat
cymbal, blocks, maracas, or claves (and numerous others), you will
see that their sound waves actually look very similar to clicks, but
last for a slightly longer time. If your material has these kinds of
percussive sounds, the size setting might need to be about 0.8 ms to
protect them. However, when this setting is set to a low value, you
will often have to manually remove larger pops that are missed by the
algorithm. You will have to choose a setting based on how much loss
is acceptable and how much time you can spend manually de-clicking
these missed clicks.

"Noise Level": The Low and Medium settings split the audio input into
noise and non-noise portions, and clicks are removed from only the
noisy part of the audio. These settings often produce fewer
artifacts; however, these settings increase usage of the computer’s
processor, and some users will not be able to preview in real-time.
When set to High, the algorithm will not try to split the audio into
noisy and non-noisy parts before removing clicks. The high setting
uses less of the computer’s processing power, so this setting is the
recommended setting for slower computers. However, some source
material (especially low voice and horns) can sometimes cause the
detection algorithm to misinterpret data and produce audible
artifacts.Use the High setting for low thumping that may not be
corrected by the Low and Medium settings.

will wrote:
>>if anyone has the click removal pugin, what is the best
>>setting for click shape and max click level?
>>i have tried different variations and dont notice much of a
>>difference. does it take extreme conditions for a noticable
>>effect?
>>please email me if you can help.
>>thanx in advance
>>will
>>