MT32pi - There are no stupid people...

[Reg]

...just me.

Hi all,

I am hoping for a little help here please as I am completely stuck after an afternoon of searching and no luck.

I got myself an MT32pi, second hand.

It seems to be configured ok, but I am having all kinds of trouble trying to get Midi to work.

I am using the excellent 300 image from Flynn with the latest update as of today from GitHub ( in terms of updated today ).

The MT32pi is detected and can be seen as I've set the audio to be showing on the virtual LCD.

IMG_E8569.JPG (2.55 MiB) Viewed 3647 times

My setup is running from the USER I/O port to the MT32pi and the LCD on the screen shows audio - yet I hear nothing.

IMG_E8570.JPG (2.53 MiB) Viewed 3647 times

When running Doom, I hear the sound effects of picking up ammo etc but it seems the audio from the MT32pi is not being passed back to teh MiSTer.

Can anyone advice please ?

Thank you.

[BigMac2]

Most common issue is the USB cable, the digital audio feed is very very length sensitive. You need a very short USB3 cable, everything over 12 inch screwup the I2S audio connection. This is the one I use: https://www.amazon.ca/-/fr/gp/product/B07QMPJ9V1/

[Reg]

Most common issue is the USB cable, the audio feed is very very length sensitive. You need a very short USB3 cable, everything over 12 inch screwup the I2S audio connection. This is the one I use: https://www.amazon.ca/-/fr/gp/product/B07QMPJ9V1/

Thank you - it did come with a USB3 cable, but I will replace that one just to be sure.

[BigMac2]

Most common issue is the USB cable, the audio feed is very very length sensitive. You need a very short USB3 cable, everything over 12 inch screwup the I2S audio connection. This is the one I use: https://www.amazon.ca/-/fr/gp/product/B07QMPJ9V1/

Thank you - it did come with a USB3 cable, but I will replace that one just to be sure.

Strange, make sure you have this following line in your mt32-pi.cfg:

Code: Select all

output_device = i2s

[Reg]

Perfect - that fixed it - the change to the config file.

Thank you VERY MUCH.