I have a midi keyboard (evolution mk161) and some

Like your Yamaha midi needs drivers.
https://www.solvusoft.com/en/update/drivers/music-keyboard/casio/privia/px-120/model-numbers/

MIDI is the language used by electronic instruments to tell each other what to play. When you press a key on a musical keyboard this keyboard will send a MIDI message to a computer or a musical instrument connected. The message says something like: start playing this note at this volume. When you stop pressing the key a new message is sent which says: stop playing this note.
MIDI messages can be transmitted using MIDI cables or USB. Old instruments had MIDI ports (round with five connectors inside) so a computer had to have a MIDI interface. Nowadays it's almost all done with usb.
The important thing to remember is that a MIDI message (and a MIDI cable) are just an instruction to play, they don't contain sound. The sound you hear when you press a key comes from the computer or the instrument connected to the keyboard, not from the plastic key you have pressed.
There is a lot more to say, but I would suggest you check wikipedia first and then come back with more specific questions.

try a different signal source (tape player, cd player etc) and see if the sound gets into your device, if it doesn't see that sound either, then the problem is with the digitech and not your midi keyboard. The digitech doesnt have midi chords, just analog so I'm a bit confused when you say MIDI. I have the digitech vocalist IV and it doesn't have midi in or out either. only analog in, also two XLR's and etc. great machine by the way, I'm sorry to hear yours has quit working for whatever reason.

You must use some form of MIDI sound generator module connected to get sound... It is a standalone capable MIDI generator, but NOT generating audio.

Hi,
sorry I don't know how to solve your problem, but maybe you can solve mine.. :) I also got the Yamaha PSR-E323, but mine doesn't work in Ableton (as a midi keyboard). How did you get yours to work/ how did you connected your keyboard to the computer?
I hope you can/want to help me! :)

WHich driver do you download for the midi? please, I dont have any idea. can you share a link where I can install or download the driver?

Check your computer setting - You should check play options or similar. You dont ID the computer nor operating system so it is hard to be more specific.

On my Midi Device with USB connection, I have a choice of Microsoft routine or other routine. When set to Microsoft setting, my midi keyboard works.

I hope this helps you

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Hello - I am too a personal owner of a CASIO CTK keyboard, a little older than yours (model CTK-601) a great keyboard BTW, and I have connected it to my computer successfuly.

There are 2 ways of connecting the keyboard to your PC......Using the MIDI outputs and a special MIDI to gameport adapter - if you have a very old system and have a joystick port (D-sub shape) on your soundcard or PC, then you use that cable. Of course this is legacy and stopped existing in newer computers, now USB is used.

Only the professional line of soundcards have direct MIDI inputs. For most of us, with consumer soundcards and PCs, there are no MIDI inputs.

The good news is that newer keyboards support USB MIDI and features direct USB connection - so all you have to do is install the drivers that are provided with your keyboard, usually a CD, and follow the instruction to install the USB drivers for your casio keyboard, BEFORE you plug in the cable (very important!) once installed you reboot and connect your keyboard using a USB cable

Now if your keyboard is older and has MIDI outputs, like mine for example, you will need to purchase a MIDI to USB adapter, those have MIDI cables in one end that plug to your keyboard and the other end a USB connector....... I don't know about the rules if I am allowed to post websites, but the product i'm using is the Uno from M-Audio - in google do this search:

"m-audio"uno

(exactly as shown above with quotes, and uno outside quotes)

Your CTK-810 may alreayd have a USB connector on it, as it is a newer generation keyboard - I am pretty sure it does - what you will have to do as stated above is located your bundled CD-ROM and install the USB drivers - you will need to purchase a USB cable (seperately).

Try downloading MidiOx and troubleshooting with it. It will show you if you have any midi activity and which channel your Casio is transmitting on etc.

The keyboard  is not sending a note off instruction after the key is released. Try checking midi preferences in reason.If your using a Mac check that the edirol is present by launching Audio MIDI Setup utility located in the utilities folder. You can download the latest Mac driver from Roland below: EDIROL PCR-300 32-key MIDI Keyboard Controller :: Download