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Ok, yes. Thanks for pointing that out. My original reply regarding the renaming of SAI ports was on topic but my project wasn't. I'll build one of these and then create a new post with my findings...

I didn't ask anything specific but would love to hear your feedback on my digital audio mixer project details so far. Would a schematic help to get feedback? I haven't decided how far I want to share...

Shouldn't this be labeled as SAI1A, SAI1B, SAI1C, SAI1D, SAI1E, and SAI2IN SAI2OUT? For my project I'm going to be converting some of the outputs as inputs. The OUT1A, OUT1B, OUT1C, OUT1D can be...

This conversation is interesting... Is this a similar process to "Anti-aliasing"? If I'm not mistaken, antialiasing for a DAC is the process of "smoothing out" the rhythmic pulse of a digital audio...

Thank you. I understand. So then how is anyone running audio based sketches on the audio board or otherwise? Let's say ToneWaveSweep? It errors on compile.

The only option in the Board Type menu for the Teensy 4 in both the current and beta versions is Serial. I don't see an option for Audio. Please excuse me if this is a trivial question. I appreciate...

I kinda agree, it's a little extreme. It was a good learning experience though. I'm now working on placing the chips I want to use directly onto the board, and skipping the Breakout Board altogether....

I'm designing based on the FreeDSP Expansion Connector.

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I thought about adding 3.3 and 5v to the FreeDSP connector (at the end of the connector), but people on DiyAudio.com suggested...

Hello,

My project requires a Bluetooth A2DP Sink that is the fed to the Teensy 4 via I2S. I'm leaning towards an ESP32 chip connected to the Teensy for both control over its Bluetooth pairing...

Can you please post a link to he right datasheet? I'm also not finding the 5 data pins on the first SAI. I did find a note about 4 data pins in the application note but not 5. I wanted to read up...

Paul, can you please confirm that the exposed USB pins (other than the one hard soldered on) can be configured to effectively operate the same way? Are the two USB pins interchangeable? Can they both...

I agree, microusb is easily broken. I prefer 5 pin USB headers, so I can connect my own USB port. Pro audio gear still uses USB B for devices. It's much larger and robust. So I would likely try to...

From the PCM5102A datasheet, "The serial audio interface typically has 4 connections SCK (system master clock), BCK (bit clock), LRCK (left right word clock) and DIN (data). The device has an...

The PCM5102A doesn't have software control, it's a hardware DAC. You'll have a digital volume, processed by the Teensy. Place it inline of the audio project on the audio design tool. Then you can...

OK, I'll still incorporate it into my breakout board. Then when there is time or interest, it will make testing easier. Does the schematic look right? Thanks Paul. I'm excited to work with this new...

In case you missed it, I documented the connections in a previous post. It seems to have resonated with many people because I hear about this chip being used with the Teensy a lot. :-)

I'm working on an Audio Breakout board and it will have TOSLINK SPDIF. Let me document my findings.

- There is an Optical Audio Output Board for Teensy 3.1 at OshPark.
- There is a discussion...

Well it's nice to meet you. I'm far from being a professional engineer. I'm self taught, just trying hard to get what it is I want. I'm glad we connected. Maybe we can help eachother out. We seem to...

Hi Mike,

You've certainly peeked my interest with the PI4. I'm interested in all things audio. Live pro audio is my background, and I'm working on gadgets to create my own pro audio mixer. My...

Do you use the PI4 for real time audio processing? Is this through some OS, or bare metal? I feel like the teensy 4 is very well optimized for this (real time requires low latency). I wonder how the...

Has anyone created the kicad files for Teensy 4.0 yet?

Hello Friends,

With a little help from a freelancer I've been getting some consulting from I was able to get this working. I have tested and confirmed the PCM5242 in both I2S and TDM modes. It's...

I'm in the market for a freelancer to help write firmware for some DAC and ADC parts, so that they work in the teensy audio library. There will be other work. It is preferable to already have...

Hello Friends,

I've been working on this project for a while, it started with other TI chips I've posted about on this forum. I'm looking for some help, if you don't mind. I have two PCM5242 EVM...

Are you sure it's not a preamp you are missing?



Do you want to try it with a line level source? Send an "ipod" through it and see how it sounds?

Hello hoho,

I'm happy this is helpful. I don't know that I have ever completed testing the quad channel inputs. I decided to go straight to the TDM format and work on the PCM5242 and PCM1865...

Hi hoho,

Not every connection needs to be hooked up... A quick look at the datasheet didn't help me figure out exactly what this pin does. Does it work without it? I haven't seen this on a chip...

I'm building a mixer with teensy. Currently working on software and pcb prototyping stage. Using PCM5242 and PCM1865 parts. You can have maximum 16x16 input/output with TDM on the two i2s lines in...

Yep, it took me a long time to figure out the jargon. There are many ways engineers call the pins. TX is "Transmit Line" because it sends a signal to wherever it's connected. RX is "Receive Line"...

Do you think an open source library integration would help?

https://aubio.org/ - looks like a neat library for detecting things in audio streams. (Wow, it's used for this Burning Man project too!:...

This concept is interesting to me. I'm in the pro-audio world and this type of thing is always wanted for so many reasons. If you look at the "DJ Effect Lights" out there such as "American DJ...

Hello,

I'm in need of some help.

I have a single I2S input and a I2S output (as coded in my previous post). Now I'm trying to add a PCM1865. This ADC utilizes TDM to accept the 4 channel...

Because curious minds wanted to know...

My code was very simple.


// Code taken from
// Advanced Microcontroller-based Audio Workshop
//
//...

Interesting.

Using your method you might find that individual control over inputs may be more difficult to volume level. The 3206 only has two PGA's (programmable gain amplifier). So you have one...

According to a TI forum post there is a PCM512x driver that is register map compatible with the PCM5242. Maybe this will help me.
...

Woah!

https://www.youtube.com/watch?v=M4a7UmBI4Ck

The Tympan Rev D is using the BC127. At some point I plan on looking at that project and how it's integrated.

I just received word from @chipaudette

Hello,

Although this doesn't pertain to the PCM5102a, I didn't want to create a new thread because this project is related (let me know if I should). I purchased a PCM5242EVM and I've successfully...

I'm looking into adding Bluetooth to my audio mixer project. Just reopening this thread to see if anyone has gotten bluetooth audio (send or receive) to work with the Teensy Audio Library or just in...

Hey, I missed this.

It would be great to get the to tlv320aic3206 "controller" into the audio library. It would have made it easier for me to have stumbled on this, and of course just adds to the...

I successfully used the PCM5102A and it sounds much better than the Audio Shield.
https://forum.pjrc.com/threads/53069-Teensy-with-PCM5102a-Module-via-I2S

Ultimately, though I wish to use the...

Have you seen this?
https://www.tindie.com/products/yoe/twi-a-teensy-based-usb-midi-woodwind-controller/

Hi Paul,

Thank you very much for your reply. I have been actively working on this project.

I was able to get this project moving with the sample parts, but now it's time for me to get it...

Hello Teensy,

Would it make sense to create a Teensy Audio Bridge? Would anyone else be interested in that?

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From my experience with my project, and digital audio projects in general...

I got the ADC working now too on my project. It's a PCM1808 module, another cheap board from ebay.

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Here are the connections for the PCM1808 module.

FMT = GND
MD1 = GND
MD0 = GND...

Update: I figured it out.

PCM5102A / Teensy 3.6
VCC = Vin
3.3v = NC
GND = GND
FLT = GND
SCL = GND (also works connected to 11 /MCL)
BCK = BCK (9)
DIN = TX (22)

Hello,

I purchased an inexpensive PCM5102a module from ebay.

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I put a teensy on a breadboard with it, and connected it using the information on this page...

Hello,

I want to control the "dsp" functions through USB-MIDI.

- Class Compliant USB Audio Device (https://www.pjrc.com/teensy/td_libs_Audio.html)
+ Class Compliant USB MIDI Device...