Filter a signal logarithmically Use the slide~ object for envelope following and lowpass filtering. Cycling '74 MSP MSP Filters (signal) Input TEXT_HERE (float) Slide up TEXT_HERE (float) Slide down TEXT_HERE (signal) Output TEXT_HERE Slide up value Specifies the slide up value. The default is 1. (Also accepts integers for these arguments as well as the associated messages which address these parameter settings.) Slide down value A second argument specifies the slide down value. The default is 1. (Also accepts integers for these arguments as well as the associated messages which address these parameter settings.) Set the current output sample value Sets the current output sample value (the value from which the next incoming value will smoothly transition from). Set the current output sample value Sets the current output sample value (the value from which the next incoming value will smoothly transition from). Set the slide up value In middle inlet: Specifies the slide up value to be used when an incoming value is greater than the current value. Set the slide down value In right inlet: Specifies the slide down value to be used when an incoming value is less than the current value. Signal to be filtered A signal to be filtered. Whenever a new value is received, slide~ filters the input signal logarithmically between changes in signal value using the formula:

y (n) = y (n-1) + ((x (n) - y (n-1))/slide)

A given sample output from slide~ is equal to the last sample's value plus the difference between the last sample's value and the input divided by the slide value. Given a slide value of 1, the output will therefore always equal the input. Given a slide value of 10, the output will only change 1/10th as quickly as the input. This can be particularly useful for lowpass filtering or envelope following. Set the slide down value The message slide_down followed by a float will specify the slide-down value to be used when an incoming value is less than the current value. Set the slide up value The message slide_up followed by a float will specify the slide-up value to be used when an incoming value is greater than the current value. Set the current output sample value to 0 Sets the current output sample value to 0(the next incoming value will smoothly transition from that 0). The slide~ object filters an input signal logarithmically between changes in signal value. The formula is y (n) = y (n-1) + ((x (n) - y (n-1))/slide). The filtered signal.