Yoshimi User Manual ~ Effects

## Effects

Effects can be applied to single instruments or as Master System/Insertion effects.
Most effects have a Preset dropdown which allows you to select some 'factory' preset. For any effect, if you select a preset and then change controls the text in this dropdown will become blue to remind you the preset has changed.
Note:
With the exception of the EQ effect, the D/W (Dry/Wet) control becomes a Vol (Volume) control when applied as a Master System effect. These are found in the Main window. In this section we always refer to D/W.

### Reverb

- Preset selects a default preset and set controls accordingly
- Type This selects the reverb type:
  - random will reset all the filters on selection and each time the roomsize is changed
  - freeverb (default) is the well-known freeverb reverb type
  - bandwidth applies a unison before the LPF/HPF filters
- R.S. Room Size (%)
- D/W Dry/Wet balance. If completely to the left only the dry signal (no reverb) will be heard
- Pan The left/right panning (panorama) for the effect
- Time Reverberation time
- I.del Initial delay (also known as pre-delay)
- I.delfb Initial delay feedback
- BW Bandwidth - Changes the unison 'spread' for the bandwidth type
- E/R [not yet implemented] Early reflections
- LPF Low Pass Filter. This will cut frequencies above the selected value
- HPF High Pass Filter. This will cut frequencies below the selected value
- Damp Amount of damping of low frequencies

### Echo

- Preset selects a default preset and set controls accordingly
- BPM When checked locks the delay control to the incoming MIDI clock
- D/W Dry/Wet balance. If completely to the left only the dry signal (no echo) will be heard
- Pan The left/right panning (panorama) for the effect
- Delay The time between echo repeats
- Separate When checked, the Delay and LRdl controls change to separate left and right delay times, so they become quite independent
- LRdl. Shortens/lengthens the delay of left and right in opposite directions. This can effectively be used to create a 'stereo echo/delay' effect
- LRc. Left/Right crossover. This defines how echos cross left to right. Or how the delays are 'spread' over the stereo (left/right panorama). To hear a difference there also needs to be a non-zero value in the above LRdl. control
- Fb. Feedback value for the echo. The higher the value the more repeats are generated
- Damp Dampening of high frequencies

### Chorus

- Preset selects a default preset and set controls accordingly
- Subtract Inverts the output if selected so it tends to subtract from the incoming signal rather than adding to it.
- D/W Dry/Wet balance. If completely to the left only the dry signal (no chorus) will be heard
- Pan The left/right panning (panorama) for the effect
- Freq LFO frequency
- Start The position (phase) in the LFO to set when the note starts
- Rnd Randomness of LFO frequency
- BPM When checked locks the frequency control to the incoming MIDI clock
- LFO Type Waveform of LFO (Sine / Tri[angle])
- St.df Stereo phase different for the left/right LFO
- Dpth Depth of the LFO
- Delay Delay of the chorus. Low depth and delay will give a flanger effect
- Fb Feedback
- L/R Left / Right effect routing. Leftmost: left to left, right to right; middle: left+right to centre; rightmost: left to right, right to left

### Phaser

- Preset selects a default preset and set controls accordingly
- D/W Dry/Wet balance. If completely to the left only the dry signal (no phaser) will be heard
- Pan The left/right panning (panorama) for the effect
- Freq LFO frequency
- Start The position (phase) in the LFO to set when the note starts
- Rnd Randomness of LFO frequency
- BPM When checked locks the frequency control to the incoming MIDI clock
- LFO Type Waveform of LFO (Sine / Tri[angle])
- Depth Effect depth
- St.df Stereo phase different for the left/right LFO
- L/R Left / Right effect routing. Only available when Analog is not selected. Leftmost: left to left, right to right; middle: left+right to centre; rightmost: left to right, right to left
- Fb Feedback
- Dist Phaser distortion. Only available when Analog is selected
- Phase Phase
- Analog FET (Field-effect transistor) emulation (on/off)
- Hyper Hyper sine mode (on/off). Only available when Analog is selected
- Sub. Inverts the output (on/off)
- Stages Phaser stages (max 12)

### AlienWah

- Preset selects a default preset and set controls accordingly
- Phase Phase of the AlienWah effect. This sets the vocal sound between an 'Aahh' and an 'Eehh'
- D/W Dry/Wet balance. If completely to the left only the dry signal (no AlienWah) will be heard
- Pan The left/right panning (panorama) for the effect
- Freq LFO frequency
- Start The position (phase) in the LFO to set when the note starts
- Rnd Randomness of LFO frequency
- BPM When checked locks the frequency control to the incoming MIDI clock
- LFO Type Waveform of LFO (Sine / Tri[angle])
- St.df Stereo phase difference for the left/right LFO
- Dpth Depth of the LFO
- Fb Feedback
- Delay Delay before the feedback. Low delay will give more of a wha wha effect (0 to 100)
- L/R Left / Right effect routing. Leftmost: left to left, right to right; middle: left+right to centre; rightmost: left to right, right to left

### Distortion

- Preset selects a default preset and set controls accordingly
- Pan The left/right panning (panorama) for the effect
- LRc. Left/Right mix
- Drive Distortion (drive) level
- Level Volume (amplification) level after distortion
- Type Select the wave for the distortion waveshaping function
- Neg. Negate (invert) the signal if selected
- LPF Low Pass Filter. Blocks frequencies above the selected frequency
- HPF High Pass Filter. Blocks frequencies below the selected frequency
- PF Pre Filter. If selected the LPF and HPF are applied before distortion
- St. Stereo. If selected the effect is stereo, otherwise mono

### EQ

This effect provides a visual representation of the EQ curve as shown in the screenshot. The horizontal axis represent frequencies and the vertical represents amplitude. The yellow line shows how the signal will be filtered (equalised).

- Gain Gain of the equalised signal
- Band Band number. The EQ effect provides up to 8 'bands' each of which is an independent filter
- Type Filter type for the selected band
- Freq Filter frequency. Depending on the type of filter this can be the cut-off or centre frequency
- Gain Gain for the filter, if made available by the type of filter (e.g. peak, high-shelf, low-shelf)
- Q Q factor for the filter. Depending on the type of filter this can be the 'resonance', 'width', etc.
- Stages Number of additional stages for the filter (up to 4). Typically, more stages result in more 'drastic' ('steep') filtering around the center/cutoff frequency

### DynFilter

The DynFilter is actually made of two effect stages, the main effect and the filter control accessible via its own panel by clicking on the 'Filter' button.

#### Effect controls

- Preset selects a default preset and set controls accordingly
- D/W Dry/Wet balance. If completely to the left only the dry signal (no DynFilter) will be heard
- Pan The left/right panning (panorama) for the effect
- Freq DynFilter LFO Frequency
- Start Only when BPM is active, this sets the position (phase) in the LFO when the note starts
- Rnd Randomness of the LFO Frequency
- LFO Type Waveform of LFO (Sine / Tri[angle])
- BPM When checked locks the frequency control to the incoming MIDI clock
- St.df Left/right channel phase shift for the LFO
- LfoD LFO Depth
- A.S. Amplitude Sensing. Changes the behaviour of the filter dependent on the incoming amplitude
- A.M. Amplitude Measurement, i.e. how the RMS value of the amplitude is calculated. The higher the value the slower the filter will react
- Inv. Invert (negate) the absolute RMS value effectively lowering the filter frequency

#### Filter controls

These controls are the same as the Filter Type ones. Here, however, the velocity sense controls are disabled. Back to Phaser Back to top