Below are a few of my patch settings on the digitech vocal 300 pedal.
Master level left at 50 which is the bootup setting.
wahsax
COMPRESSOR - on - low - gain:0
MIC PRE/VOICE - Tubepre, gain:0, DeEss:1, Level:91
EQUALIZER - B:-1, M:-4, M:1258, T:-1
GATE - on, Thresh:81
EFFECTS - envelop/8, Range:18, Sensitivity:60, FXmix:75
DELAY - Analog, 100ms, Feedback:15, DelayLevel:20
REVERB - Hall, Decay:20, Damp:50, ReverbLevel:30
EXPRESSION - Pedal1, Voxlvl, Min:0, Max:97
delay
COMPRESSOR - on - low - gain:0
MIC PRE/VOICE - Tubepre, gain:0, DeEss:1, Level:78
EQUALIZER - B:-1, M:-2, M:1837, T:-2
GATE - on, Thresh:77
EFFECTS - off
DELAY - Analog, 160ms, Feedback:22, DelayLevel:18
REVERB - Hall, Decay:20, Damp:50, ReverbLevel:30
EXPRESSION - Pedal1, Voxlvl, Min:0, Max:88
4th stack
COMPRESSOR - on - low - gain:0
MIC PRE/VOICE - darkside/4, breath:1, Level:60
EQUALIZER - B:-4, M:-3, M:756, T:-2
GATE - on, Thresh:83
EFFECTS - pitch/11, shift:7, FXlvl:40
DELAY - Analog, 120ms, Feedback:18, DelayLevel:17
REVERB - Hall, Decay:18, Damp:48, ReverbLevel:25
EXPRESSION - Pedal1, Voxlvl, Min:0, Max:75
flange
COMPRESSOR - on - low - gain:0
MIC PRE/VOICE - Tubepre, gain:0, DeEss:8, Level:70
EQUALIZER - B:-2, M:-6, M:1837, T:-8
GATE - on, Thresh:80
EFFECTS - flange, speed:23, depth:6, FXmix:55
DELAY - digital, 120ms, Feedback:15, DelayLevel:15
REVERB - Hall, Decay:14, Damp:48, ReverbLevel:15
EXPRESSION - Pedal1, Voxlvl, Min:0, Max:80
octave down
COMPRESSOR - on - low - gain:0
MIC PRE/VOICE - Tubepre, gain:0, DeEss:1, Level:75
EQUALIZER - B:-5, M:-2, M:1065, T:-2
GATE - on, Thresh:80
EFFECTS - pitch/11, Shift:-12, FXlvl:80
DELAY - digital, 100ms, Feedback:18, DelayLevel:18
REVERB - Hall, Decay:13, Damp:50, ReverbLevel:25
EXPRESSION - Pedal1, Voxlvl, Min:0, Max:85
I have a bunch more, but this is a starting point for anyone who is looking to create some sounds.
Reverb and delay are minimal.
Play around with the range and sensitivity on the envelope filter. Be careful not to "swallow" the mic with you bell as it will significantly affect the envelope and can cause feedback.
In these patches the expression pedal is a volume "safety/boost", meaning that if a patch is too low I can pull the pedal back and then back forward, raising the maxvol a bit, or, if there's feedback I can dial down to zero and then bring it up only part way so it's quieter.
Have fun!