[SOLVED] Whirring noise in recording via mic - will HW mixing help?
I'm getting whirring noise in mic recording (adjustng mic and mic-boost does not help) it also happens on ubuntu 11.04; so I guess it is a hardware issue. Strangely, I hear no noise in Windows XP in recording (sound recorder). Whereas in Archlinux, skype, audacity, arecord, gnome-sound-recorder all are having whirring noise.
I guess, it might have something to do with Intel Audio, so I'm planning to buy Creative Sound Blaster Live 5.1 (emu10k1), which has Hardware Mixing feature supported by Alsa.
Do you know any way to "suppress noise" and "echo cancellation" in arch for microphone recording?
Please advise.
We can hear the noise (unamplified/no mic boost) test-mic.wav recorded
arecord -f cd -d 5 test-mic.wav
http://www.mediafire.com/?e6n9t2sr6vwpv73
lspci wrote:00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 10)
00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 10)
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 01)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01)
01:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce 9800 GT] (rev a2)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
Last edited by fast_rizwaan (2011-09-08 00:29:10)
hi archers,
I went to the computre hardware market today to buy 'Creative Sound Blaster Live 5.1 with emu10k1 chipset'.
I thought that having hardware mixing (HWMIX) will fix noise, as the sound card is shielded from interference.
But, unfortunately or fortunately, the SBS 5.1 is not available in the market. only SBS 5.1VX model which has a different chipset is available.
So, I retured a bit disappointed thinking that the evil microsoft has caused the soundcard manufactureres to stop support to non MS OS, oh my poor linux hardware!
Based on the following, http://www.voxforge.org/home/docs/faq/f … pling-rate
I tried fiddling with sample rate, and you know what, the whirring noise is gone. It's like Windows (without fan noise suppression and echo cancellation but no static noise)
HURRAY I FOUND THE SOLUTION: setting the sound-card sampling-rate to 96000 (for my intel sound card) fixes the noise!
Here's HOWTO fix microphone noise problem in linux which was bugging me for many years!
1. Determine soundcards in the system
$ arecord --list-devices
output wrote:**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 2: ALC888 Analog [ALC888 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
soudcar is hw:0,0
2. Determine Sound card's sampling-rate of the sound card
arecord -f dat -r 60000 -D hw:0,0 -d 5 test.wav
output wrote:"Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 60000 Hz, Stereo
Warning: rate is not accurate (requested = 60000Hz, got = 96000Hz)
please, try the plug plugin
Now that we got the max-sampling-rate to 96000, we should set this in pulseaudio's configuration file /etc/pulse/daemon.conf. So first test it:
Just a quick test
arecord -f dat -r 96000 -D hw:0,0 -d 5 test.wav
And surprise, surprise, no whirring static noise in the mic recording in linux. Hurray again!
3. Setting the soundcard's sampling rate into pulse audio configuration
the default sample-rate in pulseaudio is
cat /etc/pulse/daemon.conf|grep sample-rate
output wrote:; default-sample-rate = 44100
we got 44100 and which is disabled
Let's set that to our hardware specific settings:
su -c "sed 's/; default-sample-rate = 44100/default-sample-rate = 96000/g' -i /etc/pulse/daemon.conf"
let's verify the changes to deamon.conf
cat /etc/pulse/daemon.conf|grep sample-rate
output wrote:default-sample-rate = 96000
It's done
4. Restart pulseaudio to apply the new settings
pulseaudio --kill
pulseaudio --start
That's it, now Skype, and all microphone related application will have neat audio! Thanks Archers. hope it helps.
Is there a way to suppress fan noise in pulseaudio, cause the fan noise is bothering me now at forvo.com
I also updated the pulseaudio wiki https://wiki.archlinux.org/index.php/Pu … _Recording
Last edited by fast_rizwaan (2011-09-08 00:27:53)
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You don’t want to pay any service charges
You are prepared to buy a new one
You can’t accept the re-sell value of your broken iPod
Rather than leave your iPod as paper-weight or throw it away.
You can try the following, but again, only do it as your last resort and at your own risk.
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http://eshop.macsales.com/tech_center/index.cfm?page=Video/directory.html
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http://discussions.apple.com/thread.jspa?messageID=2438774#2438774
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2. Do a search on Google and some topics on this discussion forum about “Sad iPod”
Exclamation point and folder and nothing else
http://discussions.apple.com/thread.jspa?messageID=2831962#2831962
What should I do with my iPod? Send it or keep it?
http://discussions.apple.com/thread.jspa?threadID=469080&tstart=0
Strange error on iPod (probably death)
http://discussions.apple.com/thread.jspa?threadID=435160&start=0&tstart=0
Sad Face on iPod for no apparent reason
http://discussions.apple.com/thread.jspa?threadID=336342&start=0&tstart=0
Meeting the Sad iPod icon
http://askpang.typepad.com/relevanthistory/2004/11/meeting_thesad.html#comment-10519524
Sad faced iPod, but my computer won’t recognize it?
http://discussions.apple.com/thread.jspa?messageID=2236095#2236095
iPod Photo: unhappy icon + warranty question
http://discussions.apple.com/thread.jspa?messageID=2233746#2233746
4th Gen iPod Users - are we all having the same problem?
http://discussions.apple.com/message.jspa?messageID=2235623#2235623
Low Battery, and clicking sounds
http://discussions.apple.com/thread.jspa?messageID=2237714#2237714
Sad faced iPod, but my computer won’t recognize it
http://discussions.apple.com/thread.jspa?messageID=2242018#2242018
Sad iPod solution
http://discussions.apple.com/thread.jspa?threadID=412033&tstart=0
Re: try to restore ipod and it says "can't mount ipod"
http://discussions.apple.com/thread.jspa?threadID=443659&tstart=30
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http://discussions.apple.com/thread.jspa?messageID=2420150#2420150
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Welcome to the community!
The camera can send motion alerts to an FTP server, which are the same as email alerts sent to an email address. You will get about 5 seconds of video on an alert or multiple .JPEG images. You need to have an FTP server configured and you need to configure the camera to send to that server. You can send video or images to an FTP server over the internet.
Using SMB/CIFS you can record continuously to a properly configured Samba server. This can be simply a shared folder on a PC or a Network Attached Storage device. Either way the camera needs to have Read/Write access to the shared folder. The easiest way to get started is to create a wide open share that anyone can access on the root of the drive. (Example: C:\Video) Put the IP address of the PC (i.e. 192.168.1.101) or NAS into the camera as well as the folder name where it asks for Path (i.e. Video). When SMB/CIFS is enabled, the camera should record to that share until it is disabled.
Please reply and let us know if this helps and if you have any questions. -
Captivate Video Recording via web cam?
Is it possible to do Captivate Video Recording via USB web cam? All I can see so far is about its ability to record screens and applications, but not do an actual video recording via a video camera input. Audio is no problem allowing you to insert audio from a file or do a live audio insert. Video however seems limited to insert from a file only. This would seem to imply you need a separate video recording application to capture video via a camera input, which is obviously disappointing if that's the case.
Thanks. Hopefully they will add this basic functionality to Captivate ASAP. It's a missing fundamental element. i.e. to be able to add video annotation to your slides. Lectora Publisher does it and so should Captivate in my view, given it's supposed to be among or overall ahead of the leading products. Seamless audio / video annotation is a very common requirement nowadays.
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Cannot record a mic with Audigy 2 ZS through Logic Platinum 5.1
Hi, ive got the SB Audigy 2 ZS sound card and am having some problems with ASIO... i can record a mic through the mic input when using PC AV with my card, but when i try to use ASIO i cant record with a mic. I would use PC AV but the latency is way too high on it, ive looked around loads of forums including Logic forums but no one seems to have an answer to this problem, and most of the time it goes unreplied.. does anyone know of anything i can do to get my card to record in ASIO??
thanks,
...Mike...Thanks man. I'm off to learn about kx.
I guess I should not be surprised by lack of mod response. Apparently creative drivers are still going wanting. I wonder what kind of response a query to creative support would yield. I think I will shoot them a copy of my post just for giggles. I will also tell them what I think about SNEAKING that aol crap onto my rig. -
Hi,
I've been trying to figure out how to record using mic feature. I had modified the example in the AS3 guide to something like this:
import flash.events.MouseEvent;
import flash.net.URLRequest;
import flash.utils.ByteArray;
import flash.net.SharedObject;
stop();
stopRecord.visible =false;
mybutton.addEventListener(MouseEvent.CLICK, recordmic);
trace("here!");
function recordmic(event:MouseEvent):void {
const DELAY_LENGTH:int = 20000;
var mic:Microphone = Microphone.getMicrophone();
mic.setSilenceLevel(0, DELAY_LENGTH);
mic.gain = 50;
mic.rate = 44;
mybutton.visible = false;
stopRecord.visible = true;
mic.addEventListener(SampleDataEvent.SAMPLE_DATA, micSampleDataHandler);
stopRecord.addEventListener(MouseEvent.CLICK, stoprecordmic);
var soundBytes:ByteArray = new ByteArray();
/*var timer:Timer = new Timer(DELAY_LENGTH);
timer.addEventListener(TimerEvent.TIMER, timerHandler);
timer.start(); */
function micSampleDataHandler(event:SampleDataEvent):void
while(event.data.bytesAvailable)
var sample:Number = event.data.readFloat();
soundBytes.writeFloat(sample);
soundBytes.position = 0;
function stoprecordmic(event:MouseEvent):void
mic.removeEventListener(SampleDataEvent.SAMPLE_DATA, micSampleDataHandler);
var header:URLRequestHeader = new URLRequestHeader ("Content-type","application/octed-stream");
var mp3URLRequest : URLRequest = new URLRequest("uploadsound.php");
mp3URLRequest.requestHeaders.push(header);
mp3URLRequest.method = URLRequestMethod.POST;
mp3URLRequest.data= soundBytes;
stopRecord.visible=false;
mybutton.visible = true;
Here, there are two buttons, one starts recording and the other stops recording. The resulting .swf file is only 2kb in size and it doesn't do what it is supposed to do.
What am I doing wrong here? Other players similar to this have sizes in the range of 80-100 kb.
Help will be very much appreciated!
Thankyou!you made soundBytes local to recordmic(). and it looks like you might be nesting named functions. fix that:
var soundBytes:ByteArray = new ByteArray();
stop();
stopRecord.visible =false;
mybutton.addEventListener(MouseEvent.CLICK, recordmic);
trace("here!");
function recordmic(event:MouseEvent):void {
const DELAY_LENGTH:int = 20000;
var mic:Microphone = Microphone.getMicrophone();
mic.setSilenceLevel(0, DELAY_LENGTH);
mic.gain = 50;
mic.rate = 44;
mybutton.visible = false;
stopRecord.visible = true;
mic.addEventListener(SampleDataEvent.SAMPLE_DATA, micSampleDataHandler);
stopRecord.addEventListener(MouseEvent.CLICK, stoprecordmic);
function micSampleDataHandler(event:SampleDataEvent):void
while(event.data.bytesAvailable)
var sample:Number = event.data.readFloat();
soundBytes.writeFloat(sample);
soundBytes.position = 0;
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