Both functions use the same kind of envelope or you can use a constant. The low-filter filters the high sounds away and the high-filter the low sounds. The can specify a border frequency together with a volume factor. Also you can specify the count, that is how often the filter is used so that the borderfrequency and the factor still have the same meaning. The more the count is the sharper is the border frequency. The resonant-filter uses two parameters which can both constant values or envelopes. The first parameter is the frequency, this frequency will not be weakened in the new wave. The farther away the frequencies are in the original from the resonant frequency how more weak the volume will be. How fast it is weakened tells the second parameter. If the values of the second parameter is high (maximal 1), the other frequncies are less weakened. if the values is 1 the new wave will be the same. If the values is low you can only hear the frequencies around the resonant frequency. When the values is 0, there is silence. The notch-filter uses the same envelopes as the resonant filter. With this filter you can filter away frequencies around a certain frequency. This filter is the complement of the resonant filter; everything the resonant filter put away here it is the result. If you mix the result of this filter with the result of the previous filter (with the same parameters) you get the original wave. This filter looks like the low-filter. But in addition some frequencies are filtered completly away. which is not in the low-filter. The filter use one parameter, this is the blocklength specified in time, which can be a constant or a envelope. The block is scanned though the original wave, at each step all values in the block are middled and are put in the new wave. All sinus waves which fit in the block exactly n times are filtered completely away. To make dark sounds you can also try this filter.

Last updated: 30-11-2025