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Scan Settings

TapSpeak Choice has the best and most flexible scanning support of any app on the market. 

Scan Settings

You get to the scan settings screen via the the settings icon (the gear in the title bar). 

iPad as a Switch

The iPad switch configuration is the only switch configuration that allows direct access. This is the default setting.

You can use the iPad surface as a switch for sequential scanning and row/column scanning. Tap the "1 Switch Auto" scan type segment to enable scanning. Next select among sequential, row/column, and column/row for a scan sequence and then set the top/bottom and left/right direction settings. 

One-Switch Options 

If you are using an external Bluetooth switch interface, you can use the "1 Switch" switch configuration. You have the same options on the 1 Switch setting as the iPad setting only that you don't have direct access as an option. 

Two-Switch Options

If you are using an external Bluetooth switch interface, you can use the "2 Switch" switch configuration. Here you have access to autoscanning and step scanning options. You can do sequential and row/column autoscanning and you can do sequential and row/column step scanning. 

In two-switch scanning one switch is the "scan" switch and the other is the "select" switch. Use the scan switch to initiate scanning and the select switch to select a button or row/column in row/column scanning. In step scanning, the scan switch steps through buttons. 

Sequential Scanning

Sequential scanning is an autoscanning mode. Once scanning is initiated, the scan speed setting regulates the speed at which active buttons are advanced. Sequential scanning scans buttons sequentially in the order specified by the scan order settings. If scan order is set to left/right and top/bottom, buttons will be scanned as if reading words on a page. Scan speed, button pop, scan cycle, restart scanning,  and auditory prompt settings can all affect scanning characteristics.

In two-switch sequential step scanning, the scan switch initiates scanning and the select switch selects a button.

Row/Column Column/Row Scanning

Row/column scanning is an autoscanning mode. Once scanning is initiated, the scan speed setting regulates the speed at which active rows/columns are advanced.Row/column scanning can be faster than sequential scanning as you don't have to scan a row to get to the next row of buttons. Row/column scanning can also be done column-first by selecting the Column/Row scan order. The left/right and top/bottom settings also control scan order for row/column scanning.

Start scanning by actuating your switch (or tapping the iPad surface if using the iPad as a switch). When you've reached the row you want, actuate the switch to select it. Actuate the switch again to start scanning columns. Select a button by actuating the switch.

If you're using two switches, the scan switch initiates scanning and the select switch selects a row/column and a button.

Step Scanning

Step scanning uses one switch to advance one button or one row/column at a time. The scan speed setting is not used with step scanning since there's no autmatic advancement of buttons. The scan timeout setting sets the amount of time the app waits for a scan or select switch actuation before it times out to restart scanning.

Start scanning by tapping the step switch; the first button or row/column is now active. Successively actuate the step switch to get to the button or row/column you want. Tap the select switch to select the button or row/column. With row/column scanning then proceed through buttons in the selected row/column and then acutate the select switch to select the button you want.

Scan timeout, button pop, scan cycle, restart scanning,  and auditory prompt settings can all affect scanning characteristics.

Message Window and Zone Scanning

Use of the message window is optional with scanning. With the message window turned off, scanning is simply done on the page.

If the message window is used, Choice first does a zone scan between the message and page areas. You'll see that both areas are initially dimmed. When you initiate scanning the active area is undimmed during which time you can select the area. 

When you've selected either the message or page areas, initiate scanning in the area with a switch actuation.

Scan Direction

You can your scan direct to go top/bottom or button/top, and left/right or right/left. Note that blank spaces at the beginning, end and anywhere in between are skipped durring scanning.

Restart Scanning At Last Position

This setting lets you restart scanning at the last selected button. This  setting is especially useful if your page is arranged so that you can add to or complete a phrase with subsequent buttons in a page scan pass.

Scan Speed

Scan speed, the amount of time a button remains active during scanning before the next button is scanned, can vary from 0.2 to 10 seconds. Choose the speed that's slow enough for the user to make a selection, but fast enough so as not to overly lengthen scan cycles.

Scan Cycles

This setting will let you scan through a page multiple times in case the desired button isn't selected on the first pass through a page. This value is set at one by default (no repeating the page scan). It can be set to up to 5 cycles or to continuous cycling. When the page scan cycles run out, scanning is stopped. Scanning needs to be reiniitated for the scan cycle count to restart.

Auditory Prompt

Auditory Prompt announces each button as it is scanned. By default the announcement is the same as the button's title. You can set a separate announcement, or scanning message, for a button using the button's Speech Editor. The Speech Editor has a Scanning entry where you can select TTS for a separate text-to-speech word or you can set a recording. The Same As setting will give you the spoken message for the auditory prompt.

Private Preview

Private preview allows a user to hear in an earphone button auditory prompts as they scan through a page. When they select a button and play the message in the message window, the message is played over an external speaker so that the person they're speaking to can hear the message. Private preview only works with recordings. When stereo text to speech voices for iPad become available we'll support text-to-speech private preview.

You can set the channel and volume for both the spoken message and auditory prompt. The Pan sliders moves the audio left or right. The normal usage would be to pan full left or right the spoken message and pan full the other direction the auditory prompt. Volume can be set independently for the spoken message and auditory prompt. Volume adjustments are made relative to the iPad volume. The message/prompt volume settings will only reduce the iPad's volume; they cannot increase volume above the iPad's settings.

(Information on private preview audio jacks/cables/speakers coming. You'll need a 1/8"stereo to mono Y cable.)

Button Animations

You can vary the amound and duration of button pop when you select or scan through a button. This varies the amount of visual feedback you get when you access a button. Button Pop Duration can be set from Off to =0.5 to 10 seconds. Button Pop Amount can be set from Off to 5% to 50%.

The Button Pop Duration slider can be set to 0.0 sec to turn off button pop. With button pop turned off there's no delay between tapping buttons. This is useful for those who want to be able to tap buttons in quick succession.