Basic infos and troubleshooting

Modified on Mon, 4 Nov at 9:46 AM

System requirements

Supported browser

No installation is necessary. doozzoo runs entirely in the browser.

We strongly recommend using one of these browsers:

Operating system & computer:

doozzoo runs on all computers and mobile devices with the most common operating systems.

We recommend the use of laptop or desktop computers because of the higher performance, larger screens and the more flexible usability of external hardware.

Sound & video:

doozzoo works with all common internal and external webcams, microphones and headphones.

Preparations

First connect all the devices (external webcam and microphone if available) you want to use to the computer.
Select the desired microphone and speaker/headphone output in the computer's system settings.
Before opening the browser, please close all other programs or apps that may have access to the webcam or microphone, such as Zoom or Skype.

Start session

Open the browser and visit app.doozzoo.com
If you are not logged in yet, log in with your login data (email and password). If you have forgotten your password, you can reset it by clicking on 'Forgot password'.
Start/enter session:
1. As a coach you can start your classroom by clicking the big blue 'Start Session' button.
2. As a student you can find your available coaches under the menu item 'Coaches' and join the session of your coach.

Advanced settings:

In the "Pre-session check" you can make further settings. You can find it in the lower left corner before the session under the button of the same name.

Here you can:

check if your microphones and webcams are recognized correctly
select and test the optimal audio setup in advance. We recommend the headphone mode with headphones
If you don't have headphones, choose speaker mode, otherwise you will create an echo for the person you are talking to
high-end audio settings and mirror your camera for your side

Troubleshooting

"The session does not start." / "I can't connect."

Reload the page using the corresponding icon in your browser's address bar.
Reload the page while holding down the Shift key using the corresponding icon in your browser's address bar.
Test your internet connection here:
https://tokbox.com/developer/tools/precall/
Make sure that all applications that could access the camera or microphone are turned off. This includes Zoom, Skype, Teams, etc. On Windows, make sure that these programs are not visible in the taskbar and therefore active in the background. Then restart your browser.
Update your browser to the latest version.
In the Firefox browser, the privacy settings must be set to 'Default' and all adblockers must be deactivated.
Privacy settings in Windows (WIN10) may prevent access to webcam and/or microphone -> Solution

"My counterpart can't hear me."

During the session, open the options menu via the gear icon at the top left. Select the correct microphone there.
Make sure that you have also selected the correct microphone in your system settings.
Check in the 'Pre session check' if doozzoo receives an audio signal from you. In this case you should see a rash in the 'Audio input' section.

"I can't hear my counterpart."

Make sure you have selected the correct audio output in your system settings.
Your counterpart should also make sure he/she has selected the correct microphone. He/she can check this in the 'Pre session check'. If doozzoo receives an audio signal, you will see a deflection in the 'Audio input' section.
Some manufacturers, such as Acer, integrate AI "enhancements" for audio. Acer calls this the "Acer Purified Voice Console." The AI noise reduction must be disabled for the audio to work in doozzoo.

"I hear an echo."

Probably you hear your own voice over the speakers of the person you are talking to. In this case, ask him/her to use headphones or activate 'speaker mode'.
(Activating speaker mode could negatively affect the sound. Therefore, we recommend using headphones on both sides whenever possible).
If your counterpart uses headphones with a built-in microphone, it can happen in rare cases that internal crosstalk happens there. In this case, it is advisable to use a different headphone or a different microphone than the one built into the headphone/headset (for example, the internal microphone of your computer).

"My counterpart hears an echo."

Your counterpart is probably hearing their own voice through your speakers. So it's best to use headphones or turn on speaker mode.
(Activating speaker mode could negatively affect the sound. Therefore, we recommend using headphones on both sides whenever possible).
If you use headphones with a built-in microphone, it can happen in rare cases that internal crosstalk happens there. In this case, it is advisable to use a different headphone, or a different microphone than the one built into the headphone/headset (for example, the internal microphone of your computer).

"Connection is weak or picture and sound freeze."

Connect to the Internet using a cable instead of wi-fi, if possible. This will provide a more stable and faster connection. Check the performance of your connection here:
https://tokbox.com/developer/tools/precall/
Stop any applications or apps that are likely to be transmitting or receiving large amounts of data in the background.
Go to the 'Pre session check'. Select '640x480px - 4/3' under the preview of your video. In the 'Select audio input' section you can also set the audio bitrate to a lower value.
If necessary, turn off your video during the session.

"I or the person I'm talking to hear a hissing noise."

If there is a lot of fan noise, the person on whose side the noise is coming from can check 'Noise reduction' in the audio settings. However, this can negatively affect the sound.

"The sound does not seem to be optimal."

For the most pristine audio transmission, we recommend using headphones. Then always switch on the headphone mode so that all filters are switched off.
Basically, the sound also depends on the equipment used, such as the microphone. For example, the use of an external USB microphone can provide a significant improvement in the sound.
Under Windows (WIN10), some sound settings can negatively influence the sound. -> More information and solutions.