1 00:00:04,960 --> 00:00:11,380 ‫Welcome to the microphone interface demonstration with the RTC 7 development board first demonstration. 2 00:00:11,380 --> 00:00:19,030 ‫We have added fruit's microphone breakout board that we're connecting into an external breadboard where 3 00:00:19,360 --> 00:00:25,210 ‫the breakup board has three different outputs an out which is the analog signal output and we're feeding 4 00:00:25,210 --> 00:00:32,290 ‫that into a zero and all input on the Arties the seven develop inboard of the chip kit slash Arduino 5 00:00:32,290 --> 00:00:33,370 ‫Hetter. 6 00:00:33,580 --> 00:00:38,650 ‫We're taking the ground and tying it to the ground which is then fed into the ground on the JVP made 7 00:00:38,650 --> 00:00:41,440 ‫port and our VCC. 8 00:00:41,460 --> 00:00:47,310 ‫We're doing the same thing we're tying that to 3.3 volt supply on the Jaymee p.m.-I port. 9 00:00:47,500 --> 00:00:53,930 ‫It is microform works as it takes the sound waves are generated from a human you talk or any any sound 10 00:00:53,930 --> 00:01:03,470 ‫waves and turn them into vibrations a little output a wave form that then gets sent into the zinc chip 11 00:01:03,500 --> 00:01:09,770 ‫on RTC 7 board where we have the CDC core that is sampling this at a very high rate at approximately 12 00:01:09,780 --> 00:01:12,300 ‫200 thousand samples per second. 13 00:01:12,560 --> 00:01:18,860 ‫And then we have the delay we created that sits there and every and 40000 times a second samples that 14 00:01:18,860 --> 00:01:19,440 ‫input. 15 00:01:19,460 --> 00:01:25,450 ‫And so what that means is this will only pick up or will only display sounds that any humans can hear. 16 00:01:25,460 --> 00:01:28,290 ‫So if we can't hear any sound we should see no lights light up. 17 00:01:28,550 --> 00:01:34,670 ‫But if any sound we can hear from my voice your voice or music anything you'll see all the ladies light 18 00:01:34,670 --> 00:01:35,250 ‫up. 19 00:01:35,520 --> 00:01:40,730 ‫And so I'm going to go ahead and we're going to enable the switch pull it down and just see how this 20 00:01:40,730 --> 00:01:41,690 ‫house works. 21 00:01:42,720 --> 00:01:48,570 ‫Posts down so you can see as I talk you can see the one Elodie kind of sort of light up or fades away. 22 00:01:48,570 --> 00:01:49,560 ‫If I start talking 23 00:01:52,240 --> 00:01:55,290 ‫it's very faintly there like it's almost barely not even there. 24 00:01:55,300 --> 00:01:58,810 ‫But if I talk louder talk a little more directly into the microphone. 25 00:01:58,930 --> 00:02:00,400 ‫You can see yellow light up. 26 00:02:00,670 --> 00:02:05,370 ‫And also if I would do something like clap my hands you'll notice all the ladies should light up some 27 00:02:05,370 --> 00:02:06,250 ‫or do a couple claps 28 00:02:10,020 --> 00:02:11,370 ‫and you'll see as I caught my hands. 29 00:02:11,440 --> 00:02:12,680 ‫All the ladies light up. 30 00:02:12,730 --> 00:02:18,140 ‫Now what's really cool about this what you can use it for is you can use this to synthesize the music. 31 00:02:18,310 --> 00:02:24,110 ‫So I'm going to place a music directly into the microphone and you'll see as I'm playing the music the 32 00:02:24,110 --> 00:02:27,490 ‫melody is a light up and dance and it's really cool. 33 00:02:27,490 --> 00:02:27,680 ‫So 34 00:02:47,740 --> 00:02:51,820 ‫and So this is a really cool thing you can do with this type of project where if you have a whole strand 35 00:02:51,820 --> 00:02:59,800 ‫of ladies you can use the microphone analog input such as the ADC core on your Develin board to take 36 00:02:59,800 --> 00:03:04,510 ‫those analog inputs turn them to digital and display them on Ltds which is pretty cool because it makes 37 00:03:04,510 --> 00:03:09,020 ‫it look like the lights are dancing to the sound of the music and really they are. 38 00:03:09,030 --> 00:03:11,110 ‫But this is a really cool thing to do. 39 00:03:11,170 --> 00:03:16,500 ‫And this is just one small thing of what you can do with say a microphone in your FPGA. 40 00:03:16,600 --> 00:03:22,120 ‫But now that you have the tools and the know how to take a microphone output and feed it into your FPGA 41 00:03:22,120 --> 00:03:24,190 ‫you can do whatever you want with it at this point. 42 00:03:24,290 --> 00:03:29,330 ‫That is an example of the microphone interface running on the RTG 7 development board.