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Audio to CV (Flexor)

Default installation path: .../-=Flexor=-/Cv/

"FleXor’s Audio 2 CV section is dedicated to generating CV signals from incoming audio by analyzing its sound characteristics, like its amplitude and pitch. It enables analyzing elements of an incoming sound, and using the resulting control signals to control synthesis and effect parameters." (Flexor Manual)

"analyzes the amplitude changes of the incoming audio signal, in order to produce an envelope signal at its output. The behaviour of the envelope is set with the provided attack and release controls. These can also be modulated, resulting in dynamic changes in the envelope’s response. It is useful for making dynamic effects (compressors, expanders, side-chains), as well as auto-filter effects. " (Flexor manual)                                                     

DspLoad 24.70/21.40/21.40                                poly: 15

"This module analyzes amplitude changes of the audio input, in order to produce gate messages on its output. A Threshold function sets the minimum inputlevel which the incoming signal must exceed in order to trigger a gate signal, while the Time function sets the time gap between one gate and the next. This module is especially suitable for extracting grooves from live drums, in high precision." (Flexor manual)  

Dsp load:  8.90/5.70/5.60                              monophonic   

"classic Envelope Follower that analyzes an incoming audio signal's amplitude to produce the control signal at its output." (Flexor manual)                                       

DspLoad 14.50/11.20/11.30                              poly: 15

"(..) the envelope's attack and release can also be modulated, resulting in very dynamic changes to the envelope's response. Use FollowerMod for making dynamic effects (compressors, expanders,side-chains), auto-filter and so on."  (Flexor manual)                  

DspLoad 16.60/13.40/13.40                               poly: 15

"Threshold Follower is an envelope generator with a

threshold that is compared to the incoming audio signal's

amplitude. When the signal's amplitude exceeds the

selected threshold, the envelope's attack stage is triggered.

When the signal falls below the threshold the envelope

enters the release stage. The envelope's behaviour is linear. Use Threshold Follower to make dynamic effects (compressors, expanders, side-chains), auto-filter effects and so on."   (Flexor manual)

DspLoad 11.60/8.30/8.40                                   poly:16

As above, but Threshold, Attack and Release can be modulated.

DspLoad 16.80/9.50/11.60                                  poly:16

Flexor manual: This module analyzes monophonic audio signals of a melodic nature, and produces a corresponding frequency and gate signal at its output. It is ideal for extracting the pitch from external sources, and applying it on modular oscillators in real-time. The Low Note and Range controllers are used to tune the frequency spectrum of the analysis. Different tracking methods are available for different source types. The gate output is optional. It helps in blocking notes under the indicated Low Note.

Pitch2CV: This module is optimized to track the pitch of instruments.

Pitch2CVII: This module is optimized to track the pitch of vocals.


Low Note: Click and drag up/down on this text-fader to set the lowest note which will be recognized by the Pitch to CV module. Pitch to CV will not recognize notes lower than the displayed note.

Range: This function sets the range in which the Pitch to CV module recognizes pitch. The Range knob adjusts the range up from the note indicated by the Low note window.

Portamento: This function sets the time for a pitch glide between different notes. At its zero position (extreme left), pitch changes from one note to the next will be produced as they originally appear at the incoming audio signal. Turning the knob clockwise will add a gradual transition of pitch between the notes, creating a smooth pitch glide.

Tracking Method: Click and drag up/down on this text-fader to set the pitch-recognition method which will be used to track the fundamental frequency of the incoming audio signal. Accurate is the fastest, while the Smart-Track methods will detect the pitch dynamically. Each Smart-Track method has a different feel, with 1 having the widest and fastest response, and 3 having the tightest pitch detection.

Monitor: This switch activates the monitoring function for the Hz and Samples Per Cycle displays.

Hz: This window is activated only when the Monitor switch is enabled. It shows the frequency of the generated signal, in Hertz (cycles per second), as recognized by the Pitch to CV module.

Samples Per Cycle: This window is activated only when the Monitor switch is enabled. It displays the number of samples in each cycle of the incoming audio signal, as recognized by the Pitch to CV module.

Freq: This is the frequency output of the module, where the generated frequency signal emerges. It is usually connected to the frequency input of an oscillator, in order to make the oscillator play the melody extracted from the incoming audio signal.  

Gate: This is the gate output of this module, where generated gate messages emerge. These gate messages are generated every time the Pitch to CV module recognizes an incoming audio signal at a frequency higher than the note indicated at the Low note window. This gate output is optional, needed only on certain occasions. It is useful to help eliminate occasional glitches of pitch recognition, caused by sub-rmonic content in the incoming audio signal. When used, it is usually connected to the gate input of an envelope which controls a VCA module that handles the audio output of the played oscillator, just like a standard noise gate circuit.

dspLoad Pitch2CV: 23.00 / 19.70 / 19.80                                                                         monophonic

dspLoad Pitch2CVII: 25.40 / 22.10 / 22.10                                                                        monophonic