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Type: Posts; User: Foaly

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  1. Thread: Bat detector

    by Foaly
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    38,438

    I can also recommend Sonic Visualizer...

    I can also recommend Sonic Visualizer for looking at spectrograms :)
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    Formatted as code it might do. Also the...

    Formatted as code it might do.
    Also the frequency response of the mic can be found in the SPU0410LR5H-QB datasheet. According to WMXZs test the frequency response of the ADC in the SGTL5000 is...
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    What a lucky coincidence that we are all working...

    What a lucky coincidence that we are all working on more or less the same project :D very nice!

    That sound like a simple enough setup CorBee for generating tones. I will see if I can throw...
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    Hi Frank! Thats fantastic news!...

    Hi Frank!

    Thats fantastic news! Congratulations! Sounds like you're getting some nice results. Maybe I will give the mic preamp you linked a try. Smart idea to take 3,3V opamp! :rolleyes: I had a...
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    @WMXZ: Thats great news. Thanks for confirming!...

    @WMXZ: Thats great news. Thanks for confirming! And thank you again for making the effort of testing the chip and sharing your results! Much appreciated!

    @CorBee: That is very interesting! So our...
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    Haha no worries. Yes that would be nice :) I...

    Haha no worries. Yes that would be nice :)

    I looked at your code for changing the sample rate and it seems far more elaborate, than what I've been using. Your code is nicely documented and you...
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    Hi Frank, Thanks! Yes well in theory I should be...

    Hi Frank,
    Thanks! Yes well in theory I should be able to explain why downsampling also introduces a frequency shift, as I did learn this is university... but I can't remember properly. You are...
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    Wow thank you so much! It's really nice that you...

    Wow thank you so much! It's really nice that you took the time to check! For me it's great to know that using a sample rate of 192 kHz doesn't change the SNR significantly.

    Only minor thing that I...
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    Sorry, I don't quiet understand the question. So...

    Sorry, I don't quiet understand the question. So for the first tests I have used a cheap, shitty EMY-62NL101 electret mic which only goes up to 12k. That one is quiet noisy when used with the Teensy...
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    Hi Frank, thanks for pointing me to your...

    Hi Frank,

    thanks for pointing me to your project. I have already seen it and it's what convinced me to buy the Teensy 3.6 + audio shield and try it for my project! :) really cool stuff! I've just...
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    Weeeeeeelllll hahaha :D I was actually planning...

    Weeeeeeelllll hahaha :D I was actually planning on using 192kHz as sampling rate...
    Thanks for the fast answer! Good to know I'm kinda on the right track. So what I want to do is to record ultra...
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    A few questions regarding FFTs and performance

    Hello everybody!

    I have some technical questions about the Teensy 3.6 in combination with the audio shield.
    So I would like to do quiet lot of big FFTs, then do some spectral processing and...
  13. Thread: WavFileWriter

    by Foaly
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    443

    Thank you so much :o :D There is a couple of...

    Thank you so much :o :D
    There is a couple of things I would like to tweak.
    - Using the proper size typedefs (ie int16_t, int32_t etc.) so that the integer width is guaranteed
    - Adding multi...
  14. Thread: WavFileWriter

    by Foaly
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    443

    WavFileWriter

    Hello everybody!
    I am working on a little project and needed a way to store audio on a SD card. All I could find was code that either writes raw samples or some god awful spaghetti code attempting...
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