The voice-data communication in the conference room of MeetingPlaza has the following features:
The default setting for MeetingPlaza is. "Push To Talk (PTT)" In this setting the control key is held down while talking and only one member of the conference can talk at any given time.
The settings is changed by clicking on the pull down menu in the audio function box.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
Details of setting are as follows. We can use it properly by responding to the use environment etc. because there are a merit and a weak point respectively.
The setting of the utterance method is preserved by the personal computer that uses it, and the same utterance method comes to be used at the next conference.
| Utterance method | Explanation | Advantage | Disadvantage |
|---|---|---|---|
| Mic is on while Ctrl key is down | You can talk by holding down the Ctrl key. | This will eliminate feedback from open mics. | Experience is necessary for this mode. |
| Mic is on automatically while speaking | The sound from the mic, is automatically detected, and transmits the audio | Easy to us if all participant have the correct mic setup. | Feedback from open mics can be distracting. |
| Press Ctrl key to turn on/off the mic | It begins the remark pushing the Ctrl key, it pushes again, and the remark end is done. | The same as "Mic is on while Ctrl key is down". | The same as "Mic is on while Ctrl key is down". |
| Mic is alway on. Use mute button to turn off | All audio is heard. | Used when there is a small number of conference participants. | Open mics can give feedback to the conference |
The Ctrl key is use in the push to talk mode, however one can select a different key for this function
To change the key needed for push to talk click on the down arrow.
(1) Push To Talk (Mic is on while Ctrl key is down)
(2) Assign the key for (Press Ctrl key to turn on/off the mic)
Both keys will be active.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
| Mark in window | Operation and function when click or selecting it |
|---|---|
| [Use The Ctrl key] | The Ctrl key is used as the audio key. |
| [Use an additional key] | The additional audio key can be used if indicated in the control box. |
| Modifier keys | This allows you to select the key or combination of keys for the audio control. Modifiers can also be used. |
| [OK] | The change in the setting is preserved, and the window is closed. |
| [Cancel] | This window is shut without preserving the change in the setting. |
The mic volume is adjusted by use of the slide wire next to the mic icon.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
However, auto gain control can be used to automatically adjust the mic level Refer to 5-1-4 for the method of switching on the auto gain control function.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
One can switch this function off so that the volume may be controlled manually. This will allow control of the mic volume manually.
This can be done by checking on the down arrow in the audio function box and removing the check mark. This will then allow manual adjustment.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
The volume of the speaker is adjusted by moving the slide indicator. The volume will increase by movement to the left and decrease by movement to the right.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
To mute the mic and the speakers click on the respective icons.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
If you mute the microphone and speaker for both will be displayed below.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
There are three settings (standard, high-quality, highest quality) for audio quality in MeetingPlaza. However, it is not possible to change the quality during a conference. Voice quality is set:
(1) When you reserve the conference room with the conference scheduler7.
(2) When you make the conference room with Adhoc Login Tool 8.
Please refer to the manuals for details.
The voice quality of the present conference room is obtained by clicking "Version". The "Voice quality" is confirmed in the "About MP2D ActiveX Control" box.
| Standard | Wide, Discussion, Seminar, V5standard, Classic | Easy |
|---|---|---|
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To confirm that the mic and the speaker settings in MeetingPlaza are working, use the loopback test. This should be done before the conference starts.
To use the loopback tool, click the audio control box and click "Start Loopback test" in the menu.
While holding the Ctrl key down speak into the mic. The audio should be heard back through the speakers if all setting are correct.
When the adjustment of the volume ends, click the audio function box, and select "Stop Loopback test".
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
The use of an echo canceller allows the user to use an open mic without sending feedback to the conference participants’.
This function is included in MeetingPlaza, and can be used if the CPU speed of the personal computer is 1GHz or more.
To set the echo cancelling function, click on the down arrow in the audio function box and select echo cancaller.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
The also recommend the use of a desktop mic with built in cancelling unction,
Noise reduction (microphone) can eliminate noise associated with microphone usage.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
Noise reduction (speaker) can eliminate noise associated with speaker usage.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
To display the window (reproduction control and recording control) volume control panel click on the down arrow in the volume control function box.
This will allow control of the output volumn using the Window’s operating system.
Standard
Easy, Wide, Discussion, Seminar, V5standard, Classic
When [Open Volume Control] and [Open Recording Control] on the sound menu are chosen, a window is opened.
(Playback)
(Recording)
"settings" by using a microphone in a conference room, the choice of the speaker device, adjust the volume using the device, and you can select how speech.
"settings" open procedure, there are 2.
| Standard | Wide, Discussion, Seminar, V5standard, Classic | Easy |
|---|---|---|
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In either of the above steps, "settings" open.
| Mark in window | Operation and function when click or selecting it |
|---|---|
| List of [Mic] | It is a list of the mic device that the personal computer can uses. It will display all the mic devices that are available. |
| List of [Speaker] | It is a list of the speaker device that the computer supports. |
| [Mic] adjustment locator | Controls the sensitivity of the microphone. |
| Green bar displayed [Mic] levels | Displays the mic sensitvity |
| Switch of [Speaker] | Adjusted the speaker volume |
| [Sound test] | A very short melody sound is reproduced for confirmation. |
| List of [Microphone control] | The device for transmitting audio in the conference room is selected. Please refer to 5-1-1 for details of the audio function. |
| [PTT key Settings] | The method for transmitting audio in the conference room is selected. Please refer to 5-1-2 for details of the utterance key. |
| [Advanced settings] | [Advanced settings] opens the window |
| [OK] | The settings are saved, and the window is closed. |
| [Cancel] | The setting is not saved, and the window is closed. |
| [Apply] | The setting is saved without shutting the window. |
The
| Mark in window | Operation and function when click or selecting it |
|---|---|
| [Make PTT effective in AVS modes] | Allows you to use the push to talk to transmit audio |
| [Use auto gain control] | The Mic volume is automatically adjusted when this function is turns on. |
| [Show notice of manual gain changed] | Confirms that the mic volume is automatically adjusted. |
| [Show dialog while loopback test] | "Loopback test" When beginning, the window in the figure below is displayed.  |
| [Check device settings automatically] | "Predetermined device" is checked by the automatic operation. It displays it in choices of the device of the mike and the speaker. |
| List of [High-pass Filter] | Ability to set the frequencies that can be filtered out from the audio. |
| [Audio input] | The recording volume control for Windows is opened. Please refer to 5-1-12 for details. |
| [Audio output] | The output volume control for Windows is opened. Please refer to 5-1-12 for details. |
| [OK] | The setting is saved, and the window is closed. |
| [Cancel] | The window is shut without saving the setting. |
The video specifications for MeetingPlaza:
The image transmitted and received is determined by the settings on the sending and receiving end.
The image sent is 320x256 it will be received as 320x256 even if the image that the camera transmits is 640x512.
The same limitations apply to the frame rate sent and received
The quality of the transmittion is dependent on the bandwidth available
In MeetingPlaza, the function to expand, to reduce the received image, and to display on the screen is provided. Therefore, if the size of the screen display is 80x64 even if the image that the other party took from the camera by size 640x512 is transmitted, and I also receive it by size 640x512, the reduction display is done as for the reception image. Oppositely, if the screen display size is set to 640x512 even if it is time when it also transmits, and received the image that the other party took from the camera by size 80x64 by size 80x64 also by me, the expansion display is done as for the reception image.
The video quality worsens because the display image is enlarged when the screen is displayed by a size that is bigger than the reception size.
The upper bound to make the image a high-resolution is decided by a set value at the network speed. When the network speed is fast, it is high of the image quality. The image can be sent and received. When the network speed is slow, only the image with low image quality can be sent and received.
The upper bound to make the image a high-resolution relates to the load of CPU of the personal computer.
When the load doesn't hang to CPU, the image with high image quality can be sent and received. However, when a high load hangs, only the image with low image quality can be sent and received.
When "Image quality setting bar" on the left of the screen switch is raised up, it is a high-resolution (As for the frame rate, the sending and receiving size grows high according to the network speed), and a low image quality (The sending and receiving size becomes small a frame rate low according to the network speed) when lowering below.
The level of this bar is the one that "How do you allocate it in the image?" is specified among the set network speeds (band). Within the range at the set network speed (band), the quality of the image will be adjusted.
When "Audio Priority" is clicked, the switch is the bottom (lowest quality).
Start setting procedure does not use Simple setting (recommended), there are two types.
| Standard | Wide, Discussion, Seminar, V5standard, Classic | Easy |
|---|---|---|
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"settings" on [video] select the "Simple Settings (Recommended)" check box to clear it, "Frame Rate", "size", "quality" selected.
After setting the values click, < Apply > or < OK >.
The transmission of video is dependent on the quality of the connection of the internet connection at both ends.
Even if one is transmitting a high quality video, the receiving connection must be able to receive the video at that quality. The receiving connection can be adjusted for the necessary bandwidth needed to receive the image.
This option should be on unless there is a reason to adjust the video manually.
Both DirectShow and DirectX are the functions of the multimedia system of Microsoft.
If direct show is checked, frame rates of 10 of greater can be used DirectX 8 must be installed on the personal computer14.
This will allow a smother image. DirectX is dependent on the video card used. Both these functions can be set in the video tab section under settings.
DirectX is also possible to set the next operation
If two or more cameras are connected to the same PC, the selected camera can be set in the video tab under the settings button.
Appears below the portrait of all layout images.
"Discussion", "Seminar"," V5Standard " will also appear at the bottom of the screen.
Pause the video camera is connected to the computer, saved as a bitmap image when we paused, you can send the camera instead of a bitmap image further.
| Button in window | Operation and function when click or selecting it |
|---|---|
 or  [Pause] |
The transmission of the camera image is stopped when clicking. The image of the button changes into  or  . The transmission of the camera image is restarted when clicking again. |
 or  [save] |
 or  is clicked, and it puts it into the state to stop the camera image temporarily. It enters the state that can be clicked to preserve the image that stops temporarily in the personal computer as a bit map file. |
 or  [still image] |
The bit map file is used instead of the camera image. The window where the bit map file is selected is displayed when clicking. |
The display size of the image is expanded and reduced automatically by the size of the window of the conference room screen (video area).
This expansion and reduction operation automatically done are standard of MeetingPlaza operation. To fix this function to a size that is off or specific, the following operation is done.
If it enlarges, twice it enlarges, and four times eight times are enlarged, the image quality might become bad according to the sending and receiving setting of my and other party's videos. (5-2-2)
A variety of display functions are provided besides the display function of the image that has been described up to now.
It explains these functions as follows.
The function concerning all participants' displays is shown as follows.
| Mark in window | Operation and function when click or selecting it |
|---|---|
| [Show all user] | It returns it to the state to display all participants by using this function when participant's display image is made non-display. |
| [Display order] | The order of displaying the participant is specified. Alphabetical order (A -> Z) and alphabetical order (Z -> A) are arranged by participant's name (character-code). It is arranged by the character-code for Japanese. |
The function concerning the individual participant's display is shown as follows.
This function cannot be used on "Discussion" and "Seminar" screen.
 Double size |
Will be displayed when the mouse is over the image. Display image size twice. To return to original size  (return to normal size) and click. |
 Show only this user |
Only this participant's image is made to be displayed. When you replace the video settings in the "Show all the participants" selected. |
 Show only this user un this screen |
Will be displayed when the mouse is over the image. Hides the specified recipient. When you replace the video settings in the "Show all the participants" selected. |
If you are entering a conference room organizer, you can change the video settings from a computer other participants of the organizer.
"settings" on [video] select the "Global video settings" and click opens the Preferences window once the video.
| Standard | "Wide", "Discussion", "Seminar", "V5standard", "Classic" | Easy |
|---|---|---|
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| Activating [Simple setting (recommended)] feature | Removing [Simple setting (recommended)] feature |
| Mark in window | Operation and function when click or selecting it |
|---|---|
| " Follow the video quality bar " according to image quality setting bar Check box | The batch video setting can be done by turning it on with an image quality setting bar. |
| [Audio Priority] | The switch is a high order end (lowest quality). |
| Image quality slider | It is a low image quality (It is a sending and receiving size smallness of the network of the rate of the frame of low , according to the speed) when moving it to the high-resolution (It is a sending and receiving size size according to the frame rate amount and the network speed) and the left when the switch is moved to the right. |
| [Use special user setting] | An individual video setting can be done to each user who selects it by << Add by turning it on. |
| [ << Add ] | The user name moves in the frame of "User who applies" when the user name to which it wants to set an individual video is selected from the user name in the frame of "User who doesn't apply" and this button is clicked. |
| [ Delete >> ] | The user name moves in the frame of "User who doesn't apply" when the user name that an individual video setting doesn't target is selected from the user name in the frame of "User who applies" and this button is clicked. |
| Frame rate(per user) | The frame rate of the transmitted image is specified. As for the frame rate of the received image, the maximum reception frame rate corresponding to the network speed of each user is set automatically in each user. |
| Size | The size of the sent and received image is specified. |
| Quality | The image quality of the sent and received image is specified. |
| [OK] | The batch video setting is executed and the window is shut. |
| [Cancel] | The window is shut without executing the batch video setting. |
WWhen participant's image is double-clicked with the mouse, the participant's image can be moved on the left.
This function cannot be used on "Discussion" and "Seminar" screen. Moreover, it is not reflected that the display place changes only by the conference screen of me who operated it on other participants' conference screens.
The participant displayed on the left moves to just right.
The participant can be displayed in an arbitrary place by repeatedly executing this function.
The participant's communication can be confirmed by moving the mouse cursor on the balloon type icon under the left of participant's image as shown in the figure below.
The transmission (reception): The figure of 100/0/0 is a color that shows the communication and value of %. A green, yellow, red ratio is shown from the left with %. Besides, it is a display.
While in a conference, participants can communicate with other participants of the group as a whole.
| Mark in window | Operation and function when click or selecting it |
|---|---|
| Character input area | Are for typing the message. |
| Destination selection menu | The part displayed as "All" under the character input area can select "All" (Transmit to all participants who are entering the same conference room) or an arbitrary participant name by the address of the chat character. |
| Chat display area | Running account of the chat for the conference |
| < Send > | The chat message is sent |
 < Save as > |
The content of the chat displayed in the chat window can be saved to a named file. |
 < Save as txt > |
The content of the chat displayed in the chat window is save to a text file. |
 < clear > |
Clears the entire chat window |
