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Awesome, just needs a 1/4" input for a guitar :D

What is this cool looking gadget??

It will work straight into the audio shield, if you just want mess around with it - like Pio's stereo guitar emulator. It might have to some high end roll off, though.

Does the xlr board have enough gain for a dynamic mic(SM58)? I’d like to make a mixer for my mom. And use another board for possibly a powered speaker or monitor. So that would only need a balanced and unbalanced input.

Noooooooooooo! 😩

Very cool!

Sorry...me again... Is it possible to male this work on the standard audio board like it used to? Not sure what happened in the new code, but I cant seem to get this to work on my 4.1 and stock audio board.

I’d love to make a powered mixer for a speaker out of these boards. I don’t need any outputs, but I’m sure I could simply not install some of the jacks and wire it internally. Amazing work! Looking forward to this.

Just curious if your new boards will have all in one xlr/ 1/4" jacks like your previous audio mixer project?

Very cool! Would the single esp32 in the tft screen be able to handle the gui and the communication between the Teensy?

This is actually a really exciting project. Some of the guitar pedals that people have built are AMAZING, and fun to play around with, but you can now buy a guitar modeler for very cheap, that even has mobile app control. But digital mixers are still pretty expensive. Someone much smarter than...

I’d be interested in one or two.

Very nice! Any way you can add a global eq? How’s the esp32 tft screen/control integration coming along?

Hell ya!

That looks amazing. What did you use to design that?

Im getting this linking error when trying to compile: "/.platformio/packages/toolchain-gccarmnoneeabi-teensy/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld: .pio/build/teensy_audio_board/src/main.cpp.o: in function `_GLOBAL__sub_I_i2s_in'...

Cool!! Do you think you'll use the PCM3168? I was actually thinking about making a modular board, with breakout for a screen, and some pots/buttons. And then on the codec side make it modular so you could plug in guitars, or line, or mic preamp boards. Maybe it could have power filtering on it...

Wow thats awesome! Which codec are you planning on using? Are you designing something new?

At least your experience with the SGTL is similar to mine. However my guitar doesnt have active pickups. I think the highest I saw when strumming strings hard was around 100-200mV. I'll try the eeprom tonight - I thought that might be an issue since I was using eeprom on my last Teensy project.

Alright what am I doing wrong... I cant get this new version to work. The html controls don't seem to work and Its stuck on the default clean amp and its heavily distorting. I loaded the older version and its working fine.

When is final_final_forrealthistime dropping??

Yess!!

Also, how do you get away with not using any regular audio memory? I thought you had to allocate a tiny bit even if using F32... but this doesnt

Been playing around a bit more. I got the high/lowpass filter and peaking filters working. I cant for the life of me figure out how to map the controls from "0-100" to what they actually are. I think it might be in the bundle.js file, but thats over my head. I also cant get the codec...

Ive played around a bit more with your last update. I had actually ordered a PSRAM chip when I bought the Teensy so I decided to solder that on. The delay works well on my T4.1 and Audio board. I played around with adding a Boss TU-2 in and out of the circuit and I *THINK* I hear added high end...

Ive used this: https://github.com/MarkzP/AudioEffectDynamics_F32 It's a compressor, gate, and limiter.

Does the delay require the PSRAM? My teensy doesn’t have it and I didn’t notice any issues, but I was using the version before you added delay. I also have the guitar plugged straight into the audio shield and it works surprisingly well. I’ll try it with a buffer I have in the parts box…...

Delay!

Success! After reading and playing around a bit more I got it working. The web control is very impressive. I really wish I could get this to work on Arduino so I can stick a parametric EQ in the chain. I think it would would be very useful. I also reallllly like your plate reverb! :D Also, how...

Dang :( No wonder I couldn't get it to work... I also tried playing around with PlatformIO and couldn't get that to work. Ill just have to wait or spend more time in VS

Is it possible to use just the AmpModeler in a Arduino IDE sketch? I already have a working sketch that has eq and reverb, it would be cool to try out the amp modeler in it.

I think my issues might be related to my amazon bread board. I got it working for a bit on a solder less breadboard. What's the best way to isolate digital noise and analog noise? Can I just use isolation transformers? Should power to the shield and all analog preamps be separate from the...

Im trying to separate the audio shield and the Teensy so i can isolate the grounds and Im having a bit of trouble getting it to work. I have a separate 3.3v source to power the audio shield, and im getting correct voltage, confirmed by the top of the audio shield's 3.3v pin/hole. I have 7...

Any chance you will add a parametric EQ instead of the IRs?

Oh sorry, I only watched the first video and when I looked at the GitHub I didnt see the web interface you have in the second video. Really cool stuff man!

This is so cool! It is possible to have the amp modeler and reverb working at the same time?

Ah! Thank you KrisKasprzak, I'll look at your controls code and play around with it. Thanks!

Holy moly batman! That is really impressive, and thank you for the resources. Your FFT seems like it's drawing extremely well. And it looks like you're just using fill rect just like me... however you're using an include called flicker free? Is that why it's drawing nicely or am I missing...

Thank you, that makes sense. Overwriting first with the background color would definitely be less redrawn pixels! What do you do for dynamic visuals that constantly move? Thanks!

Been trying to play around with DMA and frame buffering but Im not sure Im doing it correctly. This will make the VU meter display much nicer but my menu system will freak out with a lot of lines through it if I scroll using the encoder. How do people make their UI's work with multiple menus...

Thank you, I'll try shorter wires and monkeying around with the connections. The bread board connections aren't the best. Im a little confused about the correct connections listed on the prjc.com touch display page. I have my Teensy 4.1 plugged directly onto the audio board, and im using pins...

Thank you tomas. I think I understand, but I cant get it to work. It seems that any time a "fillrect" is called anywhere on the screen, it causes the screen to flicker a bit, no matter where the rect is filling? . I commented out the fillrect and added the background color to my main menu but...

Thanks for replying guys. Haha Ive had some time to work on this! I found a IIR filter in a project from 6 years ago called TeensyDist, made by jcugnoni, works great for my needs. https://github.com/jcugnoni/TeensyDist This is has been a major learning experience. I knew nothing about any of...

Can anyone please help me make an adjustable 4 band parametric eq. Ive looked through all the examples in the Teensy library, the open audio library, as well as other people's projects, and I just can't make anything work. Im very new to programming. I can make a high or low pass filter work...

Adding audioShield.adcHighPassFilterDisable(); solved the headphone jack noise issue... Well, not completely. There is still a whine, but it's much better than it was.

Well, I spent the last week giving myself a headache/crying playing with a Teensy 4.1 and audio shield. This is a big learning curve! I got audio pass through working and played around with a lot of the demos. I have two issues so far. I can't figure out how to get rid of the digital noise when...

Hi all. I built a light weight powered PA speaker for my mom a few years back, she signs and plays guitar. It uses a Dayton Audio KABD amp with built in DSP to take care of crossover, time alignment, and EQ. I would have loved to include a mixer for her, but at the time it proved to be too...