Differences

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--- microphones [2023/04/01 16:16] – yair
+++ microphones [2023/04/12 19:06] – yair
@@ Line 1: / Line 1: @@
 ====== listening to plantes ======
+{{ :pasted:20230412-185731.png}}
 The_Secret_Life_of_Plants (1973) [[https://en.wikipedia.org/wiki/The_Secret_Life_of_Plants|wikipedia]]  \\
+{{https://yair.cc/vidz/sff/2015_01/movies/The_Secret_Life_of_Plants_FULL-sGl4btrsiHk.webm-streamReady.ogv}} \\
+{{youtube>l0vrsO3_HpU?}}
-{{https://yair.cc/vidz/sff/2015_01/movies/The_Secret_Life_of_Plants_FULL-sGl4btrsiHk.webm-streamReady.ogv}} {{youtube>l0vrsO3_HpU?}}
+The sound machine 1947 https://archive.is/SI8iv
 === current ===
 recently sound of planets is having a comeback!
@@ Line 17: / Line 19: @@
   * [[https://archive.is/fJheR|guardian]]
-clip from guardian
+clip from guardian \\
 {{:scientists_detect_ultrasonic_popping_sounds_from_plants_when_they_are_deprived_of_water_audio_hmcg41ykfqo_.webm}}
-==== recording ultrasonic ====
+===== recording ultrasonic =====
-=== spu0410lr5 ===
+==== spu0410lr5 ====
 using the MEMEs microphone, range of 100 Hz to 80 kHz
-== from manufacture ==
+{{:pasted:20230401-162507.png }}
+=== from manufacture ===
   * [[https://www.digikey.com/en/ptm/k/knowles/ultrasonic-applications-for-knowles-electret-and-mems-microphones/tutorial|ultrasonic slideshow]]
   * {{:knowles-ultrasonic-application-note-an17.pdf|Ultrasonic Applications for Knowles Electret and MEMS Microphones}}
   * {{:analog-and-digital-mems-microphone-design-considerations-ms-2472.pdf|Analog and Digital MEMS Microphone Design Considerations}} [3]
   * {{:knowles_spu0410lr5h_qb-2935249.pdf|SPU0410LR5H}} datasheet
-  *
+  * https://wiki.sipeed.com/soft/maixpy/en/develop_kit_board/module_microphone.html
 {{:pasted:20230401-142901.png?400}}
 {{:pasted:20230401-142908.png?400}}
-== in the field ==
+=== in the field ===
 from mydlarz et el [1][2] \\
   * {{:mydlarz_aes_mems_mics_2014.pdf|The Implementation of MEMS Microphones for Urban Sound Sensing}}(2014)
   * {{:mydlarz_euronoise_2015.pdf|The design and calibration of low cost urban acoustic sensing devices}}(2015)
 [1] see also other work from  [[https://steinhardt.nyu.edu/people/charlie-mydlarz|charlie-mydlarz]], and his [[https://www.cmydlarz.com/|website]] and [[https://steinhardt.nyu.edu/marl|marl]] \\
 [2] https://www.justinsalamon.com/publications.html \\
-[3] good info at https://www.zachpoff.com/resources/cheap-microphones-for-ultrasound/ \\
+[3] good info at https://www.zachpoff.com/resources/cheap-microphones-for-ultrasound/
+----
+using [[https://www.prc68.com/I/PSOSC.shtml|polaroid]] hack for bat listening
+{{:pasted:20230401-162032.png}}
+output > [[https://www.eevblog.com/forum/projects/20khz-to-120khz-acoustic-transducer-(speaker)/|20khz-to-120khz-acoustic-transducer/speaker]]
 ==== sonyc ====