Super Low LFO frequency

[mungewell]

Made a new topic to discuss, rather than clutter the "Wish List"

5) SLOWER LFO SPEED (seriously, at '1' it's still too fast)

What frequency are you looking to achieve?

I assume that you are adjusting with Midi CC (which is 7bit). The LFO rate parameter is actually stored within the config as a 14bit value. You may have more luck/joy/success adjusting the config and then uploading that....

[mungewell]

It appears that setting LFO Rate to '1' with CC actually sets an internal value of '13'. Bizarrely using the knob the minimum you can set is '16'.

Code: Select all

$ amidi -p hw:1,0,0 -S "B4 43 01"
$ python3 uno_synth.py -d -r | grep lfo_rate
        lfo_rate = 13


I made some presets with various low values for LFO rate:
https://github.com/mungewell/uno-synth-utils/files/3853795/super_low_lfo.zip

If you want to set LFO Rate directly, you can use the following (unofficial) SysEx.

Code: Select all

$ amidi -p hw:1,0,0 -S 'f0 00 21 1a 02 01 30 00 01 20 22 00 24 f7'
                                                            ^^ low 7 bits
                                                         ^^ high 7bits


[mungewell]

I was asked about changing other parameters directly via SysEx, the same command can be used... for example setting scale to "Mixolydian C#"

Code: Select all

 
$ amidi -p hw:1,0,0 -S 'f0 00 21 1a 02 01 30 00 02 00 05 08 00 06 03 f7'
                                                                  ^^ 7bit value
                                                            ^^ ^^ Type
                                                         ^^ 7bit value
                                                   ^^ ^^ Type
                                                ^^ count

It does not set/change the tempo, I guess that is "special".