Keynoa Rings User manual

Keynoa
User Guide
Version 0.7
2022.06.08
Introduction 4
Accessibility 4
The Cherradi method 4
Basic Latin Languages Alphabet 5
Symbols & other Characters 7
Numerical Characters 9
Keynoa Main and Modified Characters 9
Latin languages' basic alphabet 10
Writing and reading Keynoa Modified Characters 10
Distinction between the First-tap and the Second Tap of a Keynoa Main
Character 11
Keynoa Application 12
Mobile phone orientation 12
Home screen and text input method appearance of Keynoa App 12
Installing Keynoa App 13
Giving Permission to install Keynoa App 13

Adding Keynoa to the list of text input methods (keyboards) of the mobile
phone 13
Setting Keynoa as the current text input method (keyboard) of the device 14
Unsetting Keynoa as the current keyboard of the device 14
Activating Keynoa Service 14
Enabling Bluetooth 15
Keynoa jingles 15
Keynoa settings default parameters 16
Using Cherradi method on a mobile phone touch screen 17
Keynoa Sliding-Finger-Menus 17
Main menu: 17
Settings of Keynoa as keyboard: 17
Settings of Keynoa Rings: 18
Settings of the speech engine: 19
Settings of sounds notifications: 19
Settings of the menus 19
Start/Stop actions: 20
Language layout selection: 21
Navigating Keynoa Sliding-Finger-Menus 21
Selecting choices in Keynoa Sliding-Finger-Menus 21
Keynoa finger gestures on the mobile phone screen 21
Tap-commands and touch-commands 22
Gesture-commands: 23
Control + letter commands: 24
Setting the reference positions of the fingers on the screen 26
How to tap with the fingers on the touch screen 26
Self-learning 26
Characters learning window: 27
Colors learning window: 27
Keynoa Rings 29
Getting started with Keynoa Rings 29
Pairing the Keynoa Rings with the mobile phone 29
Using Keynoa Rings with Keynoa App 29
Connecting Keynoa Rings to Keynoa App 29
Charging Keynoa Rings 30
Reading and writing with Keynoa Rings 30
Using Keynoa Rings for reading 30
Keynoa Rings buttons usage 31
Keynoa Rings buttons pressing commands to navigate across Keynoa settings
Menu 31
Keynoa Rings buttons pressing commands to navigate and edit a text 32
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Controlling the reading of a text with Rings buttons: 33
Keynoa Rings buttons pressing commands to Start/Stop specific features or
modes 34
Sensing colors from the touch screen 35
Troubleshooting 36
Out of sync situation 36
Loss of correspondence between the reference positions and the
finger-taps 36
Characters not from the desired language 36
Turning Talkback ON/OFF 36
3

Introduction
The Keynoa based on the Cherradi method can be used with the Keynoa Rings
device or with the touch screen of an Android mobile phone. Using the Keynoa Rings
device the user can write and read with the Cherradi method and using the touch
screen of a mobile phone the user can write with the Cherradi method.
In this User Guide the user will learn about:
1. The Cherradi method.
2. The Keynoa App, and
3. The Keynoa Rings device.
Accessibility
This guide is prepared for blind people as well as for sighted people accompanying
blind people in their experience with Keynoa. Therefore, it contains graphical images
for the sighted readers, however, the content of these images is transcribed into text.
In addition, each image is annotated in texts for blind readers.
The Cherradi method
Applying the Cherradi method the user can input text (write) by producing
finger-tapson any surface using the Keynoa Rings device or by producing
finger-taps on the touch screen of an Android mobile phone.
Applying the Cherradi method the user can also read any text in digital format by
receiving small vibrations on the fingers using the Keynoa Rings.
What the user can write or read includes:
●alphabet characters in any language,
●numerical characters and symbols,
●punctuation signs,
●other characters and symbols,
●execute text editing commands, and
Using the Keynoa Rings the user can also navigate a text while reading it.
Note: Cherradi method uses the same combination of fingers to write or read a given
character or symbol.
With the Cherradi method, the user can sense the colors of the touch screen by
receiving vibrations on the fingers using the Keynoa Rings.
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Basic Latin Languages Alphabet
We refer here to English Alphabetical Characters as Basic Latin Languages Alphabet.
To write or read each of the 25 first letters of the basic Latin Languages Alphabet
combinations of two fingers are used; these two fingers are used successively one
after the other. To write one of these 25 letters, a First Tap with the first finger is
produced, followed by a Second Tap with the second finger. Similarly to read one of
these 25 letters a first vibration on the first finger is received, followed by a second
vibration on the second finger. Following this process, use the fingers indicated
below to produce taps for writing or receive vibrations on them for reading:
●the little finger followed again by the little finger for the letter “a”
●the little finger followed by the annular finger for the letter “b”
●the little finger followed by the middle finger for the letter “c”
●the little finger followed by the index finger for the letter “d”
●the little finger followed by the thumb for the letter “e”
●the annular finger followed by the little finger for the letter “f”
●the annular finger followed again by the annular finger for the letter “g”
●the annular finger followed by the middle finger for the letter “h”
●the annular finger followed by the index finger for the letter “I”
●the annular finger followed by the thumb for the letter “j”
●the middle finger followed by the little finger for the letter “k”
●the middle finger followed by the annular finger for the letter “l”
●the middle finger followed again by the middle finger for the letter “m”
●the middle finger followed by the index finger for the letter “n”
●the middle finger followed by the thumb for the letter “o”
●the index finger followed by the little finger for the letter “p”
●the index finger followed by the annular finger for the letter “q"
●the index finger followed by the middle finger for the letter “r”
●the index finger followed again by the index finger for the letter “s”
●the index finger followed by the thumb for the letter “t”
●the thumb followed by the little finger for the letter “u”
●the thumb followed by the annular finger for the letter “v”
●the thumb followed by the middle finger for the letter “w”
●the thumb followed by the index finger for the letter “x”
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●the thumb followed again by the thumb for the letter “y”
●The process is a bit different for writing or reading “z” the 26th letter of the
basic Latin Languages Alphabet. Producing a single-tap with the index finger
followed by a double-tap again with the index finger the user will write the
letter “z”. Similarly, a single-vibration on the index finger followed by a
double-vibration again on the index finger will allow the user to read the letter
“z”
(Following is a graphics image that illustrates 26 graphics where each graphic shows
the fingers to use for each of the 26 Latin basic letters)
6

Symbols & other Characters
To write or read Symbols & other Characters use:
●simultaneously the thumb and the index finger for “Space”
●simultaneously the index finger and the middle finger for “Backspace”
●simultaneously the annular finger and the little finger for “ Enter”
●simultaneously the thumb and the middle finger for “.”
●simultaneously the thumb and the annular finger for “,”
●simultaneously the index finger and the annular finger for “;”
●simultaneously the index finger and the little finger for “:”
●the little finger followed by simultaneously the thumb and the middle finger
for “ ‘ “
●the little finger followed by simultaneously the index and the annular finger
for “@”
●the little finger followed by simultaneously the thumb and the little finger for
“!”
●the little finger followed by simultaneously the thumb and the annular finger
for “?”
●the little finger followed by simultaneously the index and the middle fingers
for “ shift “
●the little finger followed by simultaneously the thumb and the index for “ caps
lock “
●simultaneously the index, the middle, and the annular fingers to enter or exit
the Numerical Mode
●simultaneously the index, the middle, the ring, and the little fingers to hear or
read “ all words”
●simultaneously the middle, the ring, and the little fingers to hear or read “last
word “
●on the touch screen of the mobile phone tap simultaneously with all five
fingers to reset the finger-taps reference positions.
7

(Following is a graphics image that illustrates 17 graphics where each graphic shows
the fingers to use for each of 17 specific symbols and characters and frequently used
commands)
8

Numerical Characters
To write or read Numerical Characters the user need first to be in Numerical Mode.
To enter or exit Numerical Mode, simultaneously use the index, the middle, and the
annular fingers.
In Numerical Mode, to write or read Numerical Characters use:
●the little finger for “1”
●the annular finger for “2”
●the middle finger for “3”
●the index finger for “4”
●the thumb for “5”
●double-tap with the little finger to write “6” similarly receiving a
double-vibration on the little finger the user read “6”
●double-tap with the annular finger to write “7” similarly receiving a
double-vibration on the annular finger the user read “7”
●double-tap with the middle finger to write “8” similarly receiving a
double-vibration on the middle finger the user read “8”
●double-tap with the index finger to write “9” similarly receiving a
double-vibration on the index finger the user read “9”
●double-tap with the thumb to write “0” similarly receiving a double-vibration
on the thumb the user read “0”
Keynoa Main and Modified Characters
In the Cherradi method, Characters are organized for every language in two groups:
●a group of Main Characters and
●a group of Modified Characters.
Main Characters can all be obtained by 2 single-taps; each Main Character is written
by a first single-tap followed by a second single-tap. Similarly, every Main Character is
read by 2 single-vibrations; each Main Character is read by a first single-vibration
followed by a second single-vibration. Naturally, the number of Keynoa Main
Characters in any language is always equal to 5 x 5 = 25.
Consequently, Keynoa organizes the characters of a language in two groups; the first
group of 25 Main Characters and the second group of Modified Characters.
The group of Modified Characters is organized into subgroups; each subgroup of
Modified Characters modifies a specific Main Character.
The French alphabet is a good example to understand Keynoa Main and Modified
Characters as it contains numerous Keynoa Modified Letters. In Keynoa, French
Modified Letters are:
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●letters à, á, â,ä,and æ modifying the Main Letter a
●letter çmodifying Main Letterc
●letters è, é, ê, and ë modifying Main Letter e
●letters î and ïmodifying Main Letter i
●letters ô and œmodifying Main Lettero
●letters z modifying Main Letters
●letters û, ù, and ümodifying the Main Letteru
●letter ÿmodifying Main Lettery
Therefore, a subgroup of modified characters can consist of one or several modified
characters. In other words:
●Main Letter acan be modified by a subgroup of 5 letters: à, á, â,äà,and æ
●Main Letter ccan be modified by a subgroup of 1 letter: ç
●Main Letter ecan be modified by a subgroup of 4 letters: è, é, ê, and ë
●Main Letter ican be modified by a subgroup of 2 letters: î and ï
●Main Letter ocan be modified by a subgroup of 2 letters: ô and œ
●Main Letter scan be modified by a subgroup of 1 letter: z
●Main Letter ucan be modified by a subgroup of 3 letters: û, ù, and ü
●Main Letter ycan be modified by a subgroup of 1 letter: ÿ
Latin languages' basic alphabet
In Keynoa we refer to the English language alphabet as the Latin languages’ basic
alphabet as it is the simplest; it has 25 Keynoa Main Letters “a” to “y” and one Keynoa
Modified Letter “z” that is modifying letter “s”.
Writing and reading Keynoa Modified Characters
To write a modified character, identify first the main character it modifies and tap the
first single-tap with the finger corresponding to the main character in question then
produce a double-tap (instead of a single-tap) with the finger of the Second Tap. Two
cases are then possible:
●Case 1: There is only one character modifying the Main Letter in question; in
this case, after the double-tap, this modified character is produced
immediately.
For example, the modified letter z is obtained by a single-tap with the index
finger followed by a double-tap again with the index finger.
●Case 2: There is more than one character in the subgroup of characters
modifying the main character in question; in this case after producing the
double-tap, the first modified character in the subgroup is proposed. After
that,
■a single-tap with the little finger for the first modified letter.
■a single-tap with the annular finger for the second modified letter.
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■a single-tap with the middle finger for the third modified letter.
■a single-tap with the index for the Fourth modified letter.
■a single-tap with the thumb for the fifth modified letter.
For example, the French modified letters à,á,â, ä and æ; all four letters are
written by first producing a single-tap with the little finger followed by a
double-tap again with the little finger then
■a single-tap with the little finger for the letter à,
■a single-tap with the annular finger for the letter á,
■a single-tap with the middle finger for the letter â,
■a single-tap with the index finger for the letter ä, and
■a single-tap with the thumb finger for the letter æ.
Similarly all four letters à, á, â and æ are read by first receiving a single-vibration on
the little finger followed by a double-vibration again on the little finger then
■a single-vibration on the little finger for the letter à,
■a single-vibration on the annular finger for the letter á,
■a single-vibration on the middle finger for the letter â,
■a single-vibration on the index finger for the letter ä, and
■a single-vibration on the thumb finger for the letter æ.
Note: There is a second method for entering writing modified letters, which for the
sake of simplicity we will not describe here. However, to switch between the two
methods, go to the keyboard settings in the menu and select “Enable alternative
modified symbol text input method“
Distinction between the First-tap and the Second Tap of a Keynoa Main
Character
The First Tap and the Second Tap related to one of the 25 Keynoa Main Characters of
a language are differentiated by a short vibration and a long vibration of the mobile
phone; a short vibration following the First Tap and a long vibration following the
Second Tap of the Main Character.
Note that these are vibrations of the mobile phone, not of Keynoa Rings.
While writing a Main Character, when the user feel a short vibration of the phone the
user know the user just produced the First Tap of the Main Character and when the
user feel the long vibration after the Second Tap the user know the user just finished
writing the Main Character, that appears on the text input field.
These two vibrations of the mobile phone allow the user to differentiate the First Tap
from the Second Tap of a Main character. This becomes important when the user are
writing a text, because it prevents the user from getting out of synchronization and
confusing the Second Tap of a Main character with the First Tap of a subsequent
Main Character.
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If the user get out of sync when writing a text the user will end up writing wrong
characters. For example assume the user want to write the letters “ba”, if the user get
out of sync and the user produce a tap with the annular thinking that the user
produced the Second Tap for letter “b” but in fact the user produced the First Tap of
a subsequent letter, when the user next produce the little finger tap the user will end
up writing letter “f”, which the user did not want.
These out-of-sync situations can happen at the beginning when learning Cherradi
method. If it happens the user will notice it as the user will produce unwanted letters.
To escape from an out-of-sync situation just add one single-tap, that will produce a
character that the user can delete and the user can resume producing taps in a
synchronized manner.
Keynoa Application
Mobile phone orientation
The usual orientation of a mobile phone is based on the device being in Portrait
mode with the home-button at the bottom side of the screen.
Keynoa Application requires the phone to be in landscape orientation with the
home-button at the left.
Most of the applications on a mobile phone support both portrait and landscape
orientations which means that they rotate their view on the screen accordingly.
However, there are some applications that keep a fixed portrait orientation of their
view on the screen.
Keynoa supports these two groups of applications seamlessly to the user provided
that the mobile phone is kept in landscape orientation with the home button at the
left.
Home screen and text input method appearance of Keynoa App
Once installed and executed on the mobile phone, Keynoa App can appear in two
different appearances:
1. Home Screen appearance where the user can:
●connect to the Keynoa Rings device
●read text by vibrations on the fingers; with this option, the user can
open a file on the phone for reading with the help of the Rings
●sensing colors by vibrations on the fingers; with this option, the user can
touch a point on the screen of the phone and sense the colors of that
screen point.
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●self-learning mode, with this option the user can learn Cherradi method
in a simple and ludic manner.
●access Keynoa Settings menus
2. As text input method (keyboard) which the user can enable to replace the
keyboard of the mobile phone. Once enabled as the current text input
method of the phone, Keynoa will automatically appear each time the user
want to enter characters and symbols in any text input field of any application
running on the phone.
Keynoa as keyboard occupies the entire screen of the phone, which means
when Keynoa as keyboard is active, screen touches and gestures on any part
of the screen are all captured by Keynoa keyboard until Keynoa as keyboard is
hidden or closed.
Installing Keynoa App
A copy of the Keynoa App for Android mobile phones in the format of an APK file is
available upon request.
After receiving the APK file, upload it to the mobile phone.
On the mobile phone screen touch the APK icon to install it and follow the
instructions on the screen.
Giving Permission to install Keynoa App
When the user first install Keynoa App the user may be asked to allow the
installation of the APK file before the user can open and run it. Normally Keynoa App
asks the user automatically to do so, but if for some reason, it does not happen the
user can do it manually as follows:
1. Navigate to Setting > Security.
2. Check the option “Unknown sources“.
3. Tap OK on the prompt message.
4. Select “Trust“
Adding Keynoa to the list of text input methods (keyboards) of the mobile phone
Before the user can use it, the user need to add Keynoa to the list of text input
methods (keyboards) useable on the mobile phone. Keynoa App opens the desired
screen and the user only need to select “Keynoa as keyboard” and press OK on the
popping messages.
This can also be done manually in the following manner:
1. On the Android phone, open the settings app .
2. Tap System > Languages and input.
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3. Tap Virtual keyboard > Manage keyboards.
4. Enable “Keynoa as keyboard” in the list of available Keyboards.
Setting Keynoa as the current text input method (keyboard) of the device
Once the user have added “Keynoa as keyboard” to the list of usable text input
methods and Keyboards available on the mobile phone, the user need to set it to be
the current text input method (keyboard) used on the mobile phone.
1. Keynoa App will open the phone system settings
2. For the text input method choose “Keynoa as keyboard”
3. Then the user will return automatically to the Keynoa App screen
4. Touch the screen again to continue
Unsetting Keynoa as the current keyboard of the device
If “Keynoa as keyboard” is the current text input method used on the mobile phone
and the user want to quit (close) it, the user can do it anytime once Keynoa has
appeared as the text input method of the mobile phone. To do so, simply fling two
fingers upwards on the screen of the mobile phone in landscape orientation. the
user can also do it by long touch on the screen with 4 fingers. This will close Keynoa
as Keyboard and set the next text input method on the list, if there is one in the
system, as the current text input method of the mobile phone.
Note: this can be done also from the settings menu of Keynoa as a keyboard.
Activating Keynoa Service
To be able to use colors sensing feature as well as being able to read with Keynoa
Rings, the user need to activate Keynoa Service. This does not mean that Keynoa App
will collect sensitive personal information at all; as stated in its Privacy Policy, Keynoa
does not transmit nor collect anything the user inputs or any personal information.
Keynoa will open the Accessibility screen, then:
1. go to the Installed Apps screen,
2. select Keynoa service
3. turn the button from Off to On,
4. press Allow when the user are asked, “Allow Keynoa service to have full control
of the phone?”
This can also be done manually in the following manner:
1. on the Android phone, open the settings app .
2. go to Accessibility screen
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3. follow the same 4 steps as above.
If the user want to skip the activation of Keynoa Service, to use Keynoa only for
inputting text, the user can do it by long-pressing the screen. But the user will not
be able to use Keynoa Rings for reading a text the user did not input in Keynoa and
would not be able to sense colors outside of Keynoa screen.
Enabling Bluetooth
Then to be able to connect to the Keynoa Rings the user will need to enable
Bluetooth.
To do so when are asked “Allow Keynoa to find, connect and determine the relative
position of the nearby device?” press “Allow”
Congratulations, at this stage, the user would have succeeded in setting up Keynoa.
Keynoa will then appear in the Home Screen appearance (see section XXXXX to learn
more about the two appearances of Keynoa App) and once the user connect to
Keynoa Rings, the user will be able to use them to read a text and sense colors of the
screen and access Keynoa Settings Menus. (see in section XXXX for how to connect to
Keynoa Rings)
Also from now on if the user touch a text input field in one of the applications on the
phone Keynoa as a keyboard (the second appearance of the Keynoa App) will appear
allowing the user to input characters following the Cherradi method (see section
XXXX)
Keynoa jingles
When using Keynoa the user can at times hear 3 different jingles announcing
different changes of statuses of Keynoa:
1. Keynoa-Ready jingle: it is played to announce that Keynoa as a keyboard is
visible and ready to receive taps to input characters.
2. Keynoa-Hidden jingle: it is played to announce that Keynoa as a keyboard is
not visible anymore (hidden) and is not any more ready to receive taps to
input characters.
3. Keynoa-Closed jingle: it is played to announce that Keynoa as a keyboard is
closed or is not anymore the default text input method of the phone.
If the user do not hear at all these jingles playing this could be due to the phone
Notifications Volume being turned down. Turn it on from the volume buttons
following the instructions of the phone and try again.
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Keynoa settings default parameters
A number of Keynoa settings parameters can be reset to default valules from the
settings menu (see XXXXX). The default values of these parameters are:
●mapButtonToFingersDefaultState = OFF = Convert button pressing to taps
●alternativeModifierModeDefaultState = OFF = Modified letters method
●vibrateOnExitDefaultState = ON = Phone vibrates when Keynoa keyboard is
hidden
●vibrateOnTapDefaultState = ON = Phone vibrates after a character is typed
●doubleMessagesByRingsDefaultState = OFF = Double-taps detected by the
rings.
●continuousReadingDefaultState = ON = Read continuous a text
●autoCapDefaultState = ON = Turn shift ON a the beginning of a sentence
●replaceDoubleSpaceDefaultState = ON = Replace double space by dot + space
●leftHandModeDefaultState = OFF = Left handed mode
●enablePortraitDefaultState = ON (in new versions always ON) = Enable Screen
Portrait Oreintation
●sayInputEventsDefaultState = ON = Say the letters and commands inputed
●sayInputDeletedDefaultState = ON = Say the deleted character
●sayWordAfterPunctuationDefaultState = ON = Say the entire word after a
punctuation character
●menuRepeatDefaultState = OFF = Repeat continuously the menu item
description while the finger is on
●defaultScreenCodeTable = layout for the system language if not then Latin =
set layout for the system language to Latin if it is not known by the system
●menuCircleSwitchDefaultState = ON = Scan menu items in circle
●addSpeechToQueueDefaultState = OFF = Add speech to queue and say all
notifications one after the other.
●defaultMenuScrollSensitivity = 10 = Menu Scroll Sensitivity (in pixels?)
●defaultMenuSliderScrollSensitivity = 20 = Menu Slider Sensitivity (in pixels?)
●defaultCursorMoveScrollSensitivity = 20 = Cursor Move Scroll Sensitivity (in
pixels?)
●defaultSymbolDelayMs = 200L = Delay to differentiate between tap and
double tap in ms
●defaultPartsDelayMs = 50L = Delay between first tap and second tap of on of
the 25 main characters in ms
●defaultSpeechSpeed = 0.8f = Speech speed (in which unit?)
●defaultSpeechPitch = 1.2f = Speech pitch (in which unit?)
●useSoundNotifyDefaultState = ON = Play jingles
●defaultSoundNotifyVolume = 0.8f = Voiced notifications volume
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Using Cherradi method on a mobile phone touch screen
the user can use the touch screen of the mobile phone to input characters, select a
text and send it to Keynoa Rings for reading, touch a point of the screen and sense its
colors using Keynoa Rings, or access Keynoa settings menus to set up the settings
parameters of Keynoa Rings and Keynoa App using Keynoa sliding-finger-menus.
Keynoa Sliding-Finger-Menus
On its Home Screen, Keynoa App offers settings menus that can be used for setups
and configurations as well as executing specific functions.
These settings menus consist of a main menu and sub-menus as follows:
Main menu:
●Settings of Keynoa as keyboard
●Settings of Keynoa Rings
●Settings of the speech engine
●Settings of sounds notifications
●Settings of the menus
●Settings of Start/Stop actions
●Language layout selection
Settings of Keynoa as keyboard:
This menu contains the settings parameters of Keynoa as keyboard, following are the
choices:
●Auto-shift
If this feature is set, in a text input field, the first letter of the text or the first
letter after a dot + blank is automatically entered as majuscule.
The shift is automatically turned on at the beginning of the sentence the user
has the option to turn off the shift using the standard combination.
●Say characters and commands
If this feature is set, the characters and commands are announced vocally
●Replace double space with dot and space
If this feature is set, when two successive blank spaces are entered in a text
input field they are replaced by dot + blank space.
●Say deleted characters and symbols
If this feature is set, the deleted characters and symbols are announced vocally
●Say word after punctuation
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If this feature is set, the word before a punctuation character is announced
vocally
●Enable alternative text input method for modified characters
●Mark taps by vibration
If this feature is set, when producing the taps of a Keynoa main letter, the
phone vibrates after the finger taps; a short vibration to mark the first tap and
long vibration to mark the second tap. Refer to section XXXXX for more
information on the first vibration and the second vibration of a Keynoa main
letter.
●Sliding finger sensitivity
This setting controls how many letters the user can sort out while moving the
finger from one screen side to another.
●Return to the main menu
Settings of Keynoa Rings:
This menu contains the settings parameters of Keynoa Rings, following are the
choices:
●Continuous reading mode
This feature sets the reading mode with Keynoa Rings to continuous or to
word by words
●Convert Keynoa Rings buttons presses to fingers taps
If this feature is selected, ring-button-presses are interpreted as finger taps.
●Detect double-taps by Keynoa App instead of Keynoa Rings
If this feature is set, the double taps are detected by Keynoa Application
instead of being detected by Keynoa Rings.
●Send notification to Keynoa Rings
If this feature is set, voice notifications are sent simultaneously to the Keynoa
Rings.
●The time interval between sending two successive characters
The time interval between two successive characters sent to Keynoa Rings
●The time interval between the two vibrations of a character
The time interval between the first and the second vibration of a character.
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●Open a file for reading
Open a file for reading using Keynoa Rings
●Return to the main menu
Settings of the speech engine:
This menu contains the settings parameters of the speech engine, following are the
choices:
●Speech speed
This feature controls Keynoa Voice Assistance speech speed. Decrease it if the
user want the speech to play slowly.
●Speech pitch
This feature controls the Keynoa Voice Assistance speech pitch. Decrease it if
the user want the speech to play less intensively.
●Add speech to speech queue
If this setting is on, input characters and notifications are added to the queue
of speeches and will be announced one by one.
If this setting is off, the previous character or notification will be ignored so
only the last character or notification is announced at the time.
●Voice characters and commands
Use this menu item to turn on or off the voicing of characters and commands
on the screen.
●Return to the main menu
Settings of sounds notifications:
●Use sound notification instead of voice notification
●Play Jingles to indicate status changes of the Keynoa app
●Notification speech volume
●Return to the main menu
Settings of the menus
This menu contains the settings parameters of the menus, following are the choices:
●Circle navigation
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●Repeat menu item description
If this feature is set, holding a finger on the menu item, causes Keynoa Voice
Assistance to repeat the description of this item at an interval set in Menu
item 1.3.
If this feature is not set, holding a finger on the menu item, causes Keynoa
Voice Assistance to announce the description of this item only once.
●Item selection sensitivity
This parameter adjusts how many menu items are fitted on the screen at the
same time. In other words, this sets the distance the finger has to travel
between two successive menu items.
If the user feel it hard switching between menu items make this distance
larger by making the slider less sensitive.
●Sliding finger sensitivity
This parameter adjusts the slider steps on the screen. If the user decrease this
setting the slider will have fewer steps at the same time on the screen so the
user can switch between them at a slower rate.
Note: a slider is a manual control cursor allowing to set for a given parameter a
value defined by the cursor position in a range between a minimum value and
a maximal value, for example, volume control, etc.
●Return to the main menu
Start/Stop actions:
●Connect/Disconnect keynoa rings
Select this menu item to connect or disconnect the Keynoa Rings. For more
info about Keynoa Rings go to section XXXXX.
●Start/Stop color sensing mode
●Start/Stop self-learning mode
●Enable/Disable left-hand mode
Depending on whether the user are right-handed or left-handed, use this
item to set Keynoa App to use the Keynoa Rings with the right hand or with
the left hand.
●Reset/restore all settings to default
Select this item if the user want to roll back all the settings to default values.
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