Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: Wicky21

Page 1 of 3 1 2 3

Search: Search took 0.00 seconds.

  1. Replies
    4
    Views
    9,496

    Hello Paul, I need to know about the Micro SD...

    Hello Paul,
    I need to know about the Micro SD card adaptor. I'm trying to make my own PCB for one of the project. So i'm using Teensy 3.2 as well as Micro SD card. So my design will be same like...
  2. Replies
    1
    Views
    516

    Update create date on SD card file

    When im recording sound files to SD card through Teensy it will give some default create date and time. But i need to update exact date and time when creating wave files. Also currently i have access...
  3. Replies
    21
    Views
    5,355

    Ops my bad. I thought my usb power is not good

    Ops my bad. I thought my usb power is not good
  4. Replies
    21
    Views
    5,355

    When i connect my LiPo battery to charger and...

    When i connect my LiPo battery to charger and when i plugged to USB Yellow and Red both lights up. Cant figure out the issue

    12062
  5. Replies
    21
    Views
    5,355

    Thanks alot for the information. One more thing...

    Thanks alot for the information.
    One more thing when teensy is connected to usb, LiPo will charge right? So at the same time can i program teensy??? When programming teensy nothing going to affect...
  6. Replies
    21
    Views
    5,355

    If im going to connect STBC08 with Teensy 3.2, ...

    If im going to connect STBC08 with Teensy 3.2,
    1.Cut Vin and VUSB trace
    2.Solder VIN, GND and VUSB pins of the STBC08 with Teensy 3.2.
    Am i correct ???(Not sure whether VUSB pin of Teensy and...
  7. Replies
    21
    Views
    5,355

    Hello Michael Could you please post some picture...

    Hello Michael
    Could you please post some picture of the current way you have connected STBC08 to Teensy? I already bough STBC08 and want to see how it looks like before connecting to teensy
  8. Replies
    16
    Views
    4,379

    Paul i able achieve that. But it store as .raw...

    Paul i able achieve that. But it store as .raw file. Any idea how to convert it into .wav and store it on the SD card?
  9. Replies
    3
    Views
    978

    I have done the same thing with Audacity....

    I have done the same thing with Audacity. Imported as raw audio and export it as wav. But instead of using audacity i prefer recording .wav files.
    I will look at neutronned's thread
  10. Replies
    16
    Views
    4,379

    Any idea how to record mono channel using ADC ?...

    Any idea how to record mono channel using ADC ? Not from using Audio shield. Also anyone have experience recording with .wav header extension ?
  11. Replies
    3
    Views
    978

    Now it records something. But when i import .raw...

    Now it records something. But when i import .raw file into audacity it has lot of noise. I only need to record with mono channel. Also is that possible to add WAV header ? I couldn't find any forum...
  12. Replies
    3
    Views
    978

    Audio Record using AGC Microphone

    Hello everyone

    I'm using Teensy 3.2 with MicroSD adapter + AGC Microphone (Neutronned) for audio recording. I need to record .wav files instead of .raw files. Anyone have experience with...
  13. Derek Could you please explain about the new...

    Derek Could you please explain about the new interpolation method your doing Whittaker (cardinal) interpolation ? Is that only for report magnitude of the lines or is that for frequency...
  14. Replies
    31
    Views
    4,228

    Good points. Anyway could you please tell me how...

    Good points. Anyway could you please tell me how to take the magnitude of the fft bins in dB. (Bin maximum amplitude is 1)
  15. Replies
    31
    Views
    4,228

    But i read somewhere by averaging complex...

    But i read somewhere by averaging complex spectrum can avoid noises. This is going to be a DSP problem then. My approach is wrong. Are you sure about that?? :eek:
  16. Replies
    31
    Views
    4,228

    Can someone suggest better way to do this.

    Can someone suggest better way to do this.
  17. Replies
    31
    Views
    4,228

    The main reason why i asked about how to extract...

    The main reason why i asked about how to extract complex value of a bin is because i'm trying to make a function which does FFT Averaging.
    Currently doing a project to analyze environment signals...
  18. Replies
    31
    Views
    4,228

    This is not my own code. Its from Paul's...

    This is not my own code. Its from Paul's "analyze_fft1024.cpp"


    uint32_t tmp = *((uint32_t *)buffer + i); // real & imag

    I tried to do modifications after above code. Since in library after...
  19. Replies
    31
    Views
    4,228

    MichaelMeissner It should be like this right...

    MichaelMeissner
    It should be like this right ???

    union u_type{

    uint32_t num;
    uint16_t buf[2];

    }tp;
  20. Replies
    31
    Views
    4,228

    Ohhh mistake Here we go ...

    Ohhh mistake
    Here we go



    analyze_fft1024.cpp

    /* Audio Library for Teensy 3.X
    * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
    *
  21. Replies
    31
    Views
    4,228

    Maybe this what your saying Check this out

    Maybe this what your saying
    Check this out
  22. Replies
    31
    Views
    4,228

    Ok check this out whether im correct or not ...

    Ok check this out whether im correct or not

    analyze_fft1024.cpp

    for (int i=0; i < 512; i++) {
    uint32_t tmp = *((uint32_t *)buffer + i); // real & imag
    //uint32_t magsq =...
  23. Replies
    31
    Views
    4,228

    I tried to edit the code and print the values....

    I tried to edit the code and print the values. But i don't understand exactly what these values are

    analyze_fft1024.cpp

    for (int i=0; i < 512; i++) {
    uint32_t tmp = *((uint32_t *)buffer +...
  24. Replies
    31
    Views
    4,228

    I'm bit confusing how this pointers work. If I...

    I'm bit confusing how this pointers work. If I print "tmp" vatiable it should display the complex value of the particular bin right? Or else is there any proper access method? Since this is pointer...
  25. Replies
    31
    Views
    4,228

    You mean "tmp" value will return complex value of...

    You mean "tmp" value will return complex value of the particular bin? But it's a pointer right?
    Anyway "magsq" is not return complex value for sure.
  26. Replies
    31
    Views
    4,228

    Any idea how to access the complex value of a...

    Any idea how to access the complex value of a bin???
    Something like in MATLAB fft() output?? (not abs(fft))
  27. Replies
    31
    Views
    4,228

    Access FFT bin complex values

    Somebody please tell me how to access the FFT bin complex value?

    In Teensy Audio library "analyze_fft1024.cpp",


    for (int i=0; i < 512; i++) {
    uint32_t tmp = *((uint32_t *)buffer + i); //...
  28. Replies
    13
    Views
    2,414

    Publish it soon. Anyway i have to do more...

    Publish it soon. Anyway i have to do more experiments with species and recordings. Actually at research labs we'r capturing wing beat sound by trapping mosquito's inside a cage. By using Doppler...
  29. Replies
    57
    Views
    14,472

    I have done one of my IoT project by using...

    I have done one of my IoT project by using ESP8266 12E node mcu module. But since i need to combine that with Teensy 3.2 i thought to use this add-on. But im not quite sure whether all the libraries...
  30. Replies
    13
    Views
    2,414

    Impressive. Keep remember all this recordings...

    Impressive. Keep remember all this recordings were made at noisy background.
    Here i attached another sample file. Its a different species .wav file. Can check both of .wav files have the same...
  31. Replies
    57
    Views
    14,472

    Can you share the link from where I can buy 3.2...

    Can you share the link from where I can buy 3.2 add on?
  32. Replies
    57
    Views
    14,472

    Is this board available on Tindie? I only could...

    Is this board available on Tindie?
    I only could find the add-on for Teensy 3.1 in the below link
    https://www.tindie.com/products/onehorse/esp8266-add-on-for-teensy-31/

    But not the add-on for...
  33. Replies
    13
    Views
    2,414

    Yes im using FFT1024 for further analysis of...

    Yes im using FFT1024 for further analysis of samples. But rather than that thought about other mechanisms something like PLL for real time capturing frequencies. Without high end of processing.
  34. Replies
    13
    Views
    2,414

    The main reason im using PLL is to identify the...

    The main reason im using PLL is to identify the presence of a species and start to record when PLL get lock.(lock in the sense just trigger. No need to keep lock for a long time) Once I have done...
  35. Replies
    7
    Views
    2,404

    Is this board still available ???

    Is this board still available ???
  36. Replies
    101
    Views
    28,546

    Lol. Sure. Im searching the most efficient and...

    Lol. Sure. Im searching the most efficient and correct algorithm which give correct frequencies. Otherwise results were wrong and im in a trouble :D
  37. Replies
    101
    Views
    28,546

    I'm trying to analyze the different type mosquito...

    I'm trying to analyze the different type mosquito species wing beat tones. Trying to figure out is there any pattern.
  38. Replies
    101
    Views
    28,546

    Check out the below .wav which has the same buzz...

    Check out the below .wav which has the same buzz with louder sound level. It should give the correct fundamental. So some how Mid level and low level sound should compare with the Louder .wav
    Also...
  39. Replies
    101
    Views
    28,546

    I have a MATLAB code which i use to analyze the...

    I have a MATLAB code which i use to analyze the .wav files. Simply it will give the peaks by analyzing the spectrogram of the .wav file. According to that MATLAB code,

    FE55M.wav has fundamental...
  40. Replies
    101
    Views
    28,546

    Dave FE55M.wav fundamental is quite correct. Both...

    Dave FE55M.wav fundamental is quite correct. Both of the .wav files are same buzz but with two different sound levels. So FE55LW.wav fundamental also should come around the same as FE55M.wav. I know...
  41. Replies
    13
    Views
    2,414

    This are some of the results. I can't understand...

    This are some of the results. I can't understand the pattern. But seems like its trying to give some valuable information


    32767 , 0
    31586 , -3782
    23760 , -3104
    13998 , -2090
    6238 , -1419...
  42. Replies
    13
    Views
    2,414

    Great job. Thanks alot Derek. I have gone through...

    Great job. Thanks alot Derek. I have gone through with all your codes and read the Analog PLL design document as well.
    You have done a great effort on writing comments. It will explain well about...
  43. I prefer brickwall filtering with Teensy 3.2. I...

    I prefer brickwall filtering with Teensy 3.2. I know it cannot do something like Teensy 3.6. But suggest what would be the best filtering mechanism( brickwall filtering) can achieve using Teensy 3.2 ?
  44. Yes. Should start to write a code. Anyway is...

    Yes. Should start to write a code. Anyway is their proper document that explain how FFT/Convolution algorithm works?
  45. Please somebody in this thread make some ...

    Please somebody in this thread make some FFT/Convolution block for Teensy 3.2. I know teensy 3.2 has a fixed point. But i hope by using teensy 3.2 can achieve upto some extent right? It will be much...
  46. Is that possible to do Fast Convolution filtering...

    Is that possible to do Fast Convolution filtering with Fixed point devices something like Teensy 3.2 ?? Maybe one of you guys can modify the code for Teensy 3.2
  47. Replies
    101
    Views
    28,546

    Derek Good explanation as always. So "uint32_t...

    Derek Good explanation as always.
    So "uint32_t magsq" is that output value similar to MATLAB "y"(y=fft(x)) complex vector one element? I need to know from where each bin complex value can be find?...
  48. Replies
    101
    Views
    28,546

    Regarding Teensy Audio library analyze_fft1024.cpp

    Somebody please tell me in Teensy Audio library "analyze_fft1024.cpp", What is the output of the below lines?


    for (int i=0; i < 512; i++) {
    uint32_t tmp = *((uint32_t *)buffer + i); // real...
  49. Replies
    16
    Views
    2,215

    Great work. Derek I don't understand deeply what...

    Great work.
    Derek I don't understand deeply what you have explained. Some how I guess software PLL can be use with microphone input signal with good sensitivity right.
    I never had used software...
  50. Replies
    16
    Views
    2,215

    Derek Is that possible to detect certain...

    Derek

    Is that possible to detect certain frequencies from adc input signals(Microphone signals) ?
    Something like if i want to lock frequency 450Hz and need a capture range of 400Hz-500Hz...
Results 1 to 50 of 150
Page 1 of 3 1 2 3