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Type: Posts; User: adamski

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    Along with support for handling high resolution...

    Along with support for handling high resolution audio in the library...
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    Ok, thanks. I'll try the Audio Library then, and...

    Ok, thanks. I'll try the Audio Library then, and convert the 16bit integer results to floats which should not be too CPU intensive with the FPU.
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    Would it be a bad idea to use a general FFT...

    Would it be a bad idea to use a general FFT implementation such as OouraFFT rather than the one in the Audio Library? I will be pulling in data from the ADC, and converting each value to a float as...
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    Thanks, I had seen that, just wondered if there...

    Thanks, I had seen that, just wondered if there was a simple way to do this, as I don't really need the audio library otherwise.
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    That 3206 looks like it could be a good fit for...

    That 3206 looks like it could be a good fit for high-res audio processing too..
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    FFT and floating point data

    I would like to port some code to the Teensy 3.5/6 from a mobile/desktop project, that is all floating point arithmetic, and does some FFT based processing.

    Are there any examples of doing...
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    Sounds great. Looking forward to trying it out...

    Sounds great. Looking forward to trying it out when it's ready. I'm looking for a flexible FFT library for standalone use, ideally with support for floating point numbers for use on the 3.5/6.
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    No, I haven't - this idea is still in the...

    No, I haven't - this idea is still in the research phase..
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    Yeah - looking at the XMOS stuff for audio I/O...

    Yeah - looking at the XMOS stuff for audio I/O and USB now.
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    Looks very interesting, thanks for sharing

    Looks very interesting, thanks for sharing
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    https://forum.pjrc.com/threads/41370-Multichannel-...

    https://forum.pjrc.com/threads/41370-Multichannel-USB-audio-with-Teensy-3-6?p=129859#post129859
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    Thanks, from reading other posts on the subject...

    Thanks, from reading other posts on the subject thats what it was looking like. Any ideas when it might be officially supported?
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    To be fair the vendor has offered me a return and...

    To be fair the vendor has offered me a return and a refund or replacement, no questions. The seller's eBay username is 'agiia' (UK based).
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    It does specifically mention "USB High Speed (480...

    It does specifically mention "USB High Speed (480 Mbit/sec) Port" in the marketing blurb from the T3.6 Kickstarter and elsewhere, so I would assume that it should be fairly high priority to make it...
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    +1 Also looking for an answer to this...

    +1

    Also looking for an answer to this question..
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    I saw this in another thread about the 3.5/6...

    I saw this in another thread about the 3.5/6:


    Would that still have the bandwidth limitation? Can we use USB 2.0 "High Speed" mode with the Teensy 3.6?

    EDIT: from this thread it looks like...
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    We'll use an external ADC/DAC combination for...

    We'll use an external ADC/DAC combination for this eventually, probably SPI so shouldn't have the I2S limitation then. I'd like to keep it to the 3.5/6 so we have enough juice for audio processing...
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    Thanks, this might be a good starting point....

    Thanks, this might be a good starting point. Ultimately I think we'd want 24bit/48kHz or better.
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    I mean 4 mono channels in and out - over one USB...

    I mean 4 mono channels in and out - over one USB channel.
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    OK found this project...

    OK found this project https://github.com/MickMad/Teensy3-USBAudio/tree/master/software so I reckon 4 channel duplex or more should be no problem for the 3.6...
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    Multichannel USB audio with Teensy 3.6?

    Would it be possible to create a multichannel USB audio device with a Teensy 3.6? Full duplex, say 4 in - 4 out (or more?)
  22. I am planning to have 4 DC-coupled CV inputs...

    I am planning to have 4 DC-coupled CV inputs (possibly via the AD7367), and 1 audio input. I'll have a look at the DLD schematic for the AC-coupling, cheers.
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    I'm very much interesting in Rust, just haven't...

    I'm very much interesting in Rust, just haven't had the time to dive into it yet. It's still evolving but seems to have a great and helpful community around it. Have you seen this project?...
  24. Thank you, that is super helpful. Much...

    Thank you, that is super helpful. Much appreciated.

    I will be powering it off the 12v bus eventually, when I get round to installing the AD7367 I'm planning to try out for the CV inputs which...
  25. I've attempted to combine your not-so-good offset...

    I've attempted to combine your not-so-good offset and scaling schematic with a 16hz high-pass filter:
    9334
  26. Thanks Paul, that not-as-good way you linked to...

    Thanks Paul, that not-as-good way you linked to looks like a good starting point. Note in this instance I want to get audio input in rather than CV, if that makes a difference.

    I was just looking...
  27. Getting +/-5v audio signals into the Teensy 3.x analog inputs

    Hi all

    I'd like to get modular synth audio signals into a Teensy for processing (pitch detection) but I'm green when it comes to electronics. Currently thinking I need to offset the +/-5v to...
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    Forgive my ignorance, I am a bit of electronics...

    Forgive my ignorance, I am a bit of electronics noob. Would the diagram you show here be suitable for translating a +5/-5v audio signal into something the Teensy 3.x onboard ADC can read?
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    I'm happy to announce that I got it working with...

    I'm happy to announce that I got it working with the setup in my previous post. I tested all the Teensy & OLED pins with a multimeter and all looked good (my first foray into hardware debugging). I...
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    That DLD looks interesting. I like the fact the...

    That DLD looks interesting. I like the fact the user can update the firmware from an audio file - very fitting for synth geeks! Seems like a good platform on which to base an audio processing module....
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    So I've tried different pin outs, and reduced the...

    So I've tried different pin outs, and reduced the code example from @harryprayiv to the bare essentials. I'm still getting blank. My current wiring is as follows:

    OLED - Teensy...
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    Is there a reason you are using software SPI over...

    Is there a reason you are using software SPI over hardware?
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    Very interesting! The DSP object you mention -...

    Very interesting! The DSP object you mention - would that allow for floating point buffers? The reason I ask is I have been working with the JUCE C++ library, and there is lots of floating point DSP...
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    Thank you so much. This looks like just what I...

    Thank you so much. This looks like just what I need. And the pin connections also - very useful! :)
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    I also found a more recent version of u8glib...

    I also found a more recent version of u8glib https://github.com/olikraus/u8g2, I'm gonna see if I can get that working with the Teensy 3.5, based on https://github.com/FriedCircuits/Ug8lib_Teensy
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    Thanks, I'll check those points out. I found this...

    Thanks, I'll check those points out. I found this library: https://github.com/wonho-maker/Adafruit_SH1106 - managed to get it to compile but it also does not do anything to my OLED..
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    I uploaded and ran the example at...

    I uploaded and ran the example at https://github.com/crteensy/DmaSpi, and it seems to be passing all the tests, so thats a start I guess..
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    No I haven't - I don't have a 3.2 here to test...

    No I haven't - I don't have a 3.2 here to test with.



    Thanks for this. Timmy mentioned over on Muff's that the O&C code didn't work on the 3.5/6, I guess this might be one of the reasons why....
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    Thanks... I added `SPI.begin()`, still blank. ...

    Thanks... I added `SPI.begin()`, still blank.

    BTW the OLED isn't cracked just still has the sticker on which looks scratched in the pic..

    I'm wondering where I should start trying to debug...
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    Teensy 3.x and SH1106 OLED via SPI

    Hi all, first post here. I'm embarking on my first hardware project, based on the Teensy 3.5, inspired by the Ornament & Crime eurorack module. I'm borrowing a lot from the O&C. I have an OLED...
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    Interesting... I've just been thinking of...

    Interesting... I've just been thinking of something similar. Although I was looking at stereo 24bit/96kHz ADC+DAC. An open source project similar to the O&C but for audio processing based on the...
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