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  • DD4WH's Avatar
    06-22-2019, 09:18 AM
    DD4WH replied to a thread Bat detector in Audio Projects
    deleted due to browser error.
    281 replies | 25916 view(s)
  • DD4WH's Avatar
    06-22-2019, 09:16 AM
    DD4WH replied to a thread Bat detector in Audio Projects
    Hi Edwin, what an impressive amount of microphones!!! Looks like a lot of soldering fun ;-). This is wrong for single ended mode and is not stated in the datasheet, that is what my posts in the last days were...
    281 replies | 25916 view(s)
  • DD4WH's Avatar
    06-21-2019, 01:36 PM
    DD4WH replied to a thread Bat detector in Audio Projects
    Hi Edwin, I feel that there are several people having problems to understand how to use the ICS40730 in single ended mode for maximum performance ;-). Here is the <magic> with that MIC: GND --> connect to GND...
    281 replies | 25916 view(s)
  • DD4WH's Avatar
    06-19-2019, 12:14 PM
    DD4WH replied to a thread Bat detector in Audio Projects
    I initially thought you were looking for people reporting about their experience with the ICS40730. Thats what I did. I can highly recommend the ICS40730 which has proved to be of excellent performance in our...
    281 replies | 25916 view(s)
  • DD4WH's Avatar
    06-19-2019, 07:32 AM
    DD4WH replied to a thread Bat detector in Audio Projects
    Well, that is odd. How would you explain that we use the ICS40730 in many devices with great sucess and in your setup the output is not clean? I am not sure what you mean with two outputs? The ICS 40730 has only...
    281 replies | 25916 view(s)
  • DD4WH's Avatar
    06-18-2019, 09:35 PM
    DD4WH replied to a thread Bat detector in Audio Projects
    Hi Remis, we use the ICS40730 as a standard ultrasound microphone for our semiprofessional bat recorders (in single ended mode !): * it has a sensational frequency response up to 160kHz * it has the highest SNR I...
    281 replies | 25916 view(s)
  • DD4WH's Avatar
    06-18-2019, 07:23 AM
    Hi Holger, give this a try also, its a very nice filter designer and also plots the response and gives you the coefficients. Also helpful is the possibility to test the filters with different accuracies of your...
    7 replies | 238 view(s)
  • DD4WH's Avatar
    06-02-2019, 09:38 AM
    Hi Valery, 1.) sample rate: yes, that is already implemented in the newest version of the software! 2.) yes, that is also possible, but you would have to alter the function setfreq according to your specific...
    203 replies | 49264 view(s)
  • DD4WH's Avatar
    06-02-2019, 09:29 AM
    Hi Frank, I have no experience with PIN diode switching, but they are said to have low resistance against IM3, which means that high signal levels can seriously distort your reception. Could be that you can improve...
    203 replies | 49264 view(s)
  • DD4WH's Avatar
    04-28-2019, 06:03 PM
    Hi Valery, please learn how to use the Arduino IDE and Teensyduino in order to compile your programs by yourself! That is really vital and important and will help you a lot for your own experiences ! I have...
    203 replies | 49264 view(s)
  • DD4WH's Avatar
    04-27-2019, 04:45 PM
    Hi Valery, nice to hear from you and thanks for your report! However, I tested the situation with the AGC and I cannot confirm the behaviour you describe. The AGC works fine and similarly in the situations you...
    203 replies | 49264 view(s)
  • DD4WH's Avatar
    04-25-2019, 08:11 PM
    Hi Wolfgang, I am happy to help, but not in "second hand mode", so Valery should post his questions here directly on the forum. My suspicion is that he operates the Teensy Convolution SDR without an antenna or...
    203 replies | 49264 view(s)
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About DD4WH

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About DD4WH
Location:
Central Europe
Interests:
Software Defined Radio, Digital Signal Processing, Bat detection & bioacoustics

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Bat detector 06-22-2019 09:18 AM
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10-25-2015