Audio Echo Issue

Hi,
I'm building a audio/video chat. When I use the Audio sample which is in LCCS SDK, I faced some problems.
When we increase gain then echo increases even with the headset. But when we reduce the gain to 50% then echo problem is very little bit but the volume is so low that we have scream a bit to get heard. Is there any way to increase the volume and also keep the echo low. With the same internet speed we are able to hear in skype loud and clear-without echo or volume problem.
Do we have any other levers of control beside gain to play with echo and volume? We have echosupression ON on both the sides. We are using exact same code as in the LCCS sample called " Audio/Audio.mxml"
We used both the codecs SPEEX and NELLYMOSER but didn't get any help. we have faced same echo and volume issues.
Thanks,
Sanjay

QuoteI will be very surprised if they update the BIOS.It does not look like it is even need. This is not even the latest 8.15F (2011-03-19) and it does recognize the Xeon pretty well:
[img]http://s23.postimg.org/6uz9qn1ob/MSI_X58_Pro_E_detec...

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I have been having issues playing Flash videos in the current version of Firefox (10.0) as well as the previous version (unknown) over the past few months.
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Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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During capture I get this terrible audio echo. If I go into the Windows mixer panel and set a slider called Premiere down to zero that will stop it. But if I then wish to hear the audio (from Premiere) after the capture I have to turn it up again. Sureley this is not the correct way to do it.
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Problem is only while the capture screen is being used. The delay is very pronounced.
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The Stream info in MPEG streamclip for files from both cameras gives me this info:
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I have a 20 slide document with audio on all slides.
Everything is perfect until I publish to executable file. Then, on
one slide the audio echos through the whole slide. This only
happens to the one slide and you don't hear it in it's original
form.
Any ideas?

Welcome to our community, Janice
You might try exporting the audio clip from that slide to the
desktop. Rename it. Then remove the audio clip and import it back
in as a new clip for that slide.
I seem to recall seeing that as a solution for something like
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Cheers... Rick

10.4.10 Audio Popping Issues: Information Check with Internal Speakers

For people with internal speakers, or those without subwoofers: Please read all the way to the bottom to find a test that will determine whether you are also having audio problems, even if you can't hear pops.
We've had a lot of discussion about audio popping due to 10.4.10, and the evidence indicates that the audio circuitry is going to sleep to conserve power, even on AC-only computers like the iMac, Mac Mini, and (at least one) Mac Pro. Some people claim to not have this problem, but I'm wondering if they just aren't noticing it.
Having external speakers with a subwoofer, set to high amplification, are key to obvious detection of the problem. Let the sound subsystem go idle for 30+ seconds (wait a minute with no audio, just to be safe), turn up your external speakers really loud, and cause the computer to make a sound. You should hear a burst before the sound plays. If you repeat the sound, you won't hear the burst. This is the sound of the audio circuitry powering on, and the speakers are amplifying it.
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Please try this test, and report here. I want to build a list of people who previously couldn't hear the sounds, but still have the delay. This might give us a better picture of the scope of the problem.

Re: 10.4.10 Audio Popping Issues: Information Check with Internal Speakers
Your analysis of what is happening is right on.
The problem on my Intel Mac mini with external Klipsch speakers (two mid-range/high and a subwoofer) is REAL obvious as the system emits a hum like a Spinal Tap amplifier turned up to #11 when 10.4.10 powers down the audio circuitry
Then, if I play a song in iTunes, it first pops and the hum disappears right before playing.
Quite annoying.
Here's what I sent to Apple tech support:
Guys/Gals (OS X Engineers):
Concerning the Snap, Crackle Pop Audio problem in the 10.4.10 update:
Please. Just do the right thing and fix the audio.
There is no need to power cycle the audio subsystem to save .0005 amps on your laptops.
And then to make your Mac mini/iMac/other desktop users have to put up with it when using AC power is ridiculous.
Put the audio subsystem back like it was in 10.4.9 and let the laptop battery freaks looking for mini-amp savings get a "work-a-round".
Crikey!
Mac Mini 1.83 Ghz Intel Core Duo 1GB RAM Mac OS X (10.4.9) 20 Years of Microsoft-Induced Grey Hair

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https://sourceforge.net/adobe/smp/wiki/Dynamic%20Buffering/
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So frustrating that nobody knows why. Audio Sync issue.

I have an imovie project of old family footage that was ported over from VHS through a sony dcr pc120e mini dv cam straight through to intel imac via firewire. The imovie project is flawless and the sound is perfectly in sync. ive exported to idvd and when finished the audio is out of sync on the final disk. Now i have been reading about this issue and see that people blame idvd8 but it happens when i make a dvd with my imovie project using toast titanium 9 too. Surely if it plays perfectly as an imovie project there must be a way of transferring to dvd without audio sync issues. If anyone knows a solution or piece of software that will remedy this please please let me know as i have wasted about 12 dvds in various experiments.

mogreen wrote:
camcorder on 16bit, i am using a vhs player attacthed to camera then firewire to imac, ... the imovie project is perfect in everyway. Everything is pal. Yes i did export to QT within IM and this was also out of sync.
thanks for answering some of my Qs ...
there's one thing, I do suspect, which was a 'source' for sync-weirdness for years.. which is the AUDIO connected to some video.
you told us, video is 25fps, and audio is included 16bit (which is good...)
I assume, adding some NON-conform audio could cause trouble... (as a 12bit audio would cause outofsynciness) .. we do know very little about, how iM08 handles audio+video internally, we 'Silverbacks' had long discussions about really weird side effects as a 'zooming' of dvfiles on export etc. I wouldn't be surprised, if adding some non-iTS, non-48kHz-aiff, non-whatever... causes such an effect.
so, please answer my audio Q from above: source, format, bitrate...?
and just for curiosity: how long is your project in total? hh:min:sec?
==edit==
pops into mind: in iM vers3, there was some 'bug', concerning PAL wrong audio and NTSC good audio ... wow < scratching bald head > .. try to contact some wiseguy with better memory..
Message was edited by: Karsten Schlüter

Audio Echo Issue

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