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Your TV speakers should be turned all the way down or off when you use a separate sound system such as a soundbar. Using them with the soundbar may cause echoes and the TV speakers do nothing to improve the sound.
Look at your TV's audio menu. If you can, turn the TV speakers off completely at the menu. Also see if you can set the analog audio output to "variable." This will allow you to control the soundbar's volume with the TV remote.
The control supposedly controls the mix of the echo... this is a reverb type sound. Please note that room acoustics AND if the mic's "hear" the speaker in this, it may create an echo that is NOT under control of the adjustment. Make sure the mic's cannot "hear" the speaker or a reflection off a wall.
Have you checked the sound with some other speakers or a headphones.
If the sound is still like echo try adjusting audio settings not thru My Computer - audio, but try finding a software that comes with *********** board/sound card. I suppose the sound is some AC97/Realtek compatible card, so you should looking in your program files under Realtek into WDM and run the Audio Control Panel or Sound Manager (whatever you find). Adjust the sound effects to NONE and use some normal enviroment (other then echo/cave/big hall).
Try one or more steps to reduce echo:
1. In Device Settings, under Mircophone test make sure that 'Auto
Adjust Audio' is checked. It automatically sets the audio and reduces
2. Right click in the class window to open up the context menu. Click
Settings in the menu. Macromedia Flash Player Settings window opens up.
Click on microphone icon and check 'Reduce Echo' option.
3. Uncheck boost in microphone device settings.
4. Use a headset and not desktop speakers.
If a class participant (may be an attendee or a presenter) is
experiencing echo then all other class participants are required to
make settings at their ends. Preferably, the presenter may transfer
control to the attendees one by one and identify the system generating
When you say echo, are you meaning sound coming from your mic echoing thru the speakers or a sound like your in a bathroom on all audio.
If you are referring to the mic issue, then open your volume control and make sure that MIC is muted in playback setttings
If you are refering to bathroom sound on everything , it is called a "environmental setting" and in in your sound cards software setup, like their version of the volume control or some other application they have installed for you to configure your card. Just locate the "environmental" setting and disable it / set it to none.
The echo you hear is the audio delay between your TV speakers and Bose speakers. Muting (or lowering the volume) on the TV will eliminate the echo. Some TVs have a setting to turn of TV speakers entirely, allowing you to listen to your TVs audio strictly through your Bose system.
Try right clicking on yout Volume Icon in the system tray (where your clock is). Click on Open Volume Control. Make sure you have some audio playing, then just go through each channel and mute each one, 1 by 1 until the echo has gone. If that don't work, then again, right click on Volume Icon in Tray, click on Adjust Audio Properties, then under speaker settings, select advance, then choose Desktop Stereo Speakers, under the Speaker Setup Options.
One of those should work. If it is your Mic causing the Echo, then you would get loads of feedback if you whack up the volume. If you don't get the feedback, then it's more then likely the Speaker Setup or some Sound FX is enabled through your Sound Card Software.