The number of samples the absolute envelope follower will take to reach the next value when raising.
The number of samples the envelope follower will take to reach the next value when raising.
ARGUMENT:: rampDown
The number of samples the absolute envelope follower will take to reach the next value when falling.
The number of samples the envelope follower will take to reach the next value when falling.
ARGUMENT:: onThreshold
The threshold in dB of the absolute envelope follower to trigger an onset, aka to go ON when in OFF state.
The threshold in dB of the envelope follower to trigger an onset, aka to go ON when in OFF state.
ARGUMENT:: offThreshold
The threshold in dB of the absolute envelope follower to trigger an offset, , aka to go ON when in OFF state.
The threshold in dB of the envelope follower to trigger an offset, , aka to go ON when in OFF state.
ARGUMENT:: minSliceLength
The length in samples that the Slice will stay ON. Changes of states during that period will be ignored.
@ -37,10 +37,10 @@ ARGUMENT:: minSilenceLength
The length in samples that the Slice will stay OFF. Changes of states during that period will be ignored.
ARGUMENT:: minLengthAbove
The length in samples that the absolute envelope have to be above the threshold to consider it a valid transition to ON. The Slice will start at the first sample when the condition is met. Therefore, this affects the latency.
The length in samples that the envelope have to be above the threshold to consider it a valid transition to ON. The Slice will start at the first sample when the condition is met. Therefore, this affects the latency.
ARGUMENT:: minLengthBelow
The length in samples that the absolute envelope have to be below the threshold to consider it a valid transition to OFF. The Slice will end at the first sample when the condition is met. Therefore, this affects the latency.
The length in samples that the envelope have to be below the threshold to consider it a valid transition to OFF. The Slice will end at the first sample when the condition is met. Therefore, this affects the latency.
ARGUMENT:: lookBack
The length of the buffer kept before an onset to allow the algorithm, once a new Slice is detected, to go back in time (up to that many samples) to find the minimum amplitude as the Slice onset point. This affects the latency of the algorithm.
@ -49,7 +49,7 @@ ARGUMENT:: lookAhead
The length of the buffer kept after an offset to allow the algorithm, once the Slice is considered finished, to wait further in time (up to that many samples) to find a minimum amplitude as the Slice offset point. This affects the latency of the algorithm.
ARGUMENT:: highPassFreq
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths.
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths. A frequency of 0 bypasses the filter.
ARGUMENT:: maxSize
How large can the buffer be for time-critical conditions, by allocating memory at instantiation time. This cannot be modulated.
@ -129,7 +129,7 @@ b = Buffer.read(s,File.realpath(FluidAmpGate.class.filenameSymbol).dirname.withT
//have fun with a gate (explore lookahead and lookback, but correct for latency, which will be the greatest of the lookahead and lookback)
The length in samples that the Slice will stay ON. Changes of states during that period will be ignored.
ARGUMENT:: highPassFreq
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths.
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths. A frequency of 0 bypasses the filter.
RETURNS::
An audio stream with square envelopes around the slices. The latency between the input and the output is dependant on the relation between the two envelope followers.
The index of the buffer where the indices (in sample) of the estimated starting points of slices will be written. The first and last points are always the boundary points of the analysis.
ARGUMENT:: rampUp
The number of samples the absolute envelope follower will take to reach the next value when raising.
The number of samples the envelope follower will take to reach the next value when raising.
ARGUMENT:: rampDown
The number of samples the absolute envelope follower will take to reach the next value when falling.
The number of samples the envelope follower will take to reach the next value when falling.
ARGUMENT:: onThreshold
The threshold in dB of the absolute envelope follower to trigger an onset, aka to go ON when in OFF state.
The threshold in dB of the envelope follower to trigger an onset, aka to go ON when in OFF state.
ARGUMENT:: offThreshold
The threshold in dB of the absolute envelope follower to trigger an offset, , aka to go ON when in OFF state.
The threshold in dB of the envelope follower to trigger an offset, , aka to go ON when in OFF state.
ARGUMENT:: minSliceLength
The length in samples that the Slice will stay ON. Changes of states during that period will be ignored.
@ -59,10 +59,10 @@ ARGUMENT:: minSilenceLength
The length in samples that the Slice will stay OFF. Changes of states during that period will be ignored.
ARGUMENT:: minLengthAbove
The length in samples that the absolute envelope have to be above the threshold to consider it a valid transition to ON. The Slice will start at the first sample when the condition is met. Therefore, this affects the latency.
The length in samples that the envelope have to be above the threshold to consider it a valid transition to ON. The Slice will start at the first sample when the condition is met. Therefore, this affects the latency.
ARGUMENT:: minLengthBelow
The length in samples that the absolute envelope have to be below the threshold to consider it a valid transition to OFF. The Slice will end at the first sample when the condition is met. Therefore, this affects the latency.
The length in samples that the envelope have to be below the threshold to consider it a valid transition to OFF. The Slice will end at the first sample when the condition is met. Therefore, this affects the latency.
ARGUMENT:: lookBack
The length of the buffer kept before an onset to allow the algorithm, once a new Slice is detected, to go back in time (up to that many samples) to find the minimum amplitude as the Slice onset point. This affects the latency of the algorithm.
@ -71,7 +71,7 @@ ARGUMENT:: lookAhead
The length of the buffer kept after an offset to allow the algorithm, once the Slice is considered finished, to wait further in time (up to that many samples) to find a minimum amplitude as the Slice offset point. This affects the latency of the algorithm.
ARGUMENT:: highPassFreq
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths.
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths. A frequency of 0 bypasses the filter.
ARGUMENT:: action
A Function to be evaluated once the offline process has finished and indices instance variables have been updated on the client side. The metric will be passed indices as an argument.
The length in samples that the Slice will stay ON. Changes of states during that period will be ignored.
ARGUMENT:: highPassFreq
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths.
The frequency of the fourth-order Linkwitz–Riley high-pass filter (https://en.wikipedia.org/wiki/Linkwitz%E2%80%93Riley_filter). This is done first on the signal to minimise low frequency intermodulation with very fast ramp lengths. A frequency of 0 bypasses the filter.
ARGUMENT:: action
A Function to be evaluated once the offline process has finished and indices instance variables have been updated on the client side. The metric will be passed indices as an argument.
//looking at the result is not easy to grasp, since it is interleaved: first number is mean of L, second is mean of R, third is stddev of L, fourth is stddev or R
//this will make it tidier - the first value of each line is Left, the second is Right
@ -82,6 +82,12 @@ b = Buffer.read(s,File.realpath(FluidSines.class.filenameSymbol).dirname.withTra
// as the algorithm resynthesize the sinusoidal peaks, we would expect to get it to work almost perfectly on a sine wave, with these settings that tell the process to tolerate everything as a sinusoid, even short and quiet peaks
// as this is a windowed process, the frequency of the peak is good for that full window, and therefore interesting artefacts appear when the pitch is changing.
Pierre Alexandre Tremblay
6 years ago