Raspberry Pi USB microphone 1 Khz background noise interfere - Raspberry Pi Forums

-

using this microphone have severe noise in background. more peripherals plug in (camera, gertboard, wi-fi adapter) worse noise becomes. we've tried several different power supplies, problem still remains. microphone seems pick switching noise pi , peripherals connected it. significant frequency 1 can hear sounds 1 khz.

noise not present if 1 plugs in microphone other computer. problem lies raspberry pi itself. have suggestions problem?

using raspberry pi model b old linear regulators. perhaps problem fixed using usb hub external power supply?

(edit: also, volume same, believe amplitude around 0.2 on scale 0 1. it's constant tone alike 1 khz sawtooth/square tone. not using usb extension cable, still same bad effect.)

bump


raspberrypi



Comments

Post a Comment

Popular posts from this blog

Connecting Raspberry Pi 2 to P10(1R)-V706 LED Dot Matrix - Raspberry Pi Forums

-
Image
hello everyone, name kedi.. make system connecting raspberry pi 2 , arduino uno arduino adc of 1 dust sensor sharp gp2y1010au0f , 4 gas sensor. want show decision of air quality system in running text @ p10 16x32 led dot matrix display. in raspberry pi 2, connect p10 pins in gpio25, gpio12, gpio16, gpio13 & gpio26. now, i'm finish circuit , don't know must connect p10's vcc & ground (red & black wire). can me? , code in python controlling p10(1r)-v706 dot matrix?.. regards, kedi i can't python code (did mine in basic on risc os) regarding power, panels each require 2.5a, you'll need separate supply them. if attempted power them pi, pi's polyfuse blow immediately. alternatively, use supply capable of giving 10a supply both panels , pi. raspberrypi
Read more

TypeError: <unknown> is not a numpy array - Raspberry Pi Forums

-
hi, thank help. question simple: how convert raspistill data opencv processing. code: select all def capture(settings, width, height): command = "raspistill %s -w %s -h %s -t 200 -e bmp -n -o -" % (settings, width, height) imagedata = stringio.stringio() imagedata.write(subprocess.check_output(command, shell=true)) imagedata.seek(0) im = image.open(imagedata) buffer = im.load() imagedata.close() return im,buffer code: select all image1, buffer1 = capture(camerasettings, testwidth, testheight) cv2.imshow('image',image1) want use different opencv processing techniques, before need know doing wrong. bests svato raspberrypi
Read more

datso and removing imagetitle - Joomla! Forum - community, help and support

-
hello everybody i have installed datso v. 1.3.8 , remove imagetitles http://www.galleri-kbh.dk/index.php?opt ... ry&catid=2 on datsos  homepage there no names, can't find function in parameters in administration?? http://www.datso.fr/datsogallery/viewcategory/2.html can me. vh jan found way it  :d delete line 307 "$tle = ereg_replace('"', '', $row1->imgtitle);" in file components/com_datsogallery/datsogallery.php Board index Joomla! Older Version Support Joomla! 1.0 Extensions - 1.0.x Components
Read more