Speech recognition is classified into two categories, speaker dependent and speaker independent.
Find and compare top Medical Transcription software on Capterra, with our free and interactive tool. Quickly browse through hundreds of Medical Transcription tools and systems and narrow down your top choices. Filter by popular features, pricing options, number of users, and read reviews from real users and find a tool that fits your needs. Speech Recognition in Mac OS X Lion enables your Mac to recognize and respond to human speech. It lets you issue verbal commands to your Mac and have it actually perform the commanded tasks. When Speech Recognition is turned on, a round feedback window appears on-screen. Now, here’s how to actually use Speech Recognition: To.
Speaker dependent systems are trained by the individual who will be using the system. These systems are capable of achieving a high command count and better than 95% accuracy for word recognition. The drawback to this approach is that the system only responds accurately only to the individual who trained the system. This is the most common approach employed in software for personal computers.
Speaker independent is a system trained to respond to a word regardless of who speaks. Therefore the system must respond to a large variety of speech patterns, inflections and enunciation's of the target word. The command word count is usually lower than the speaker dependent however high accuracy can still be maintain within processing limits. Industrial requirements more often need speaker independent voice systems, such as the AT&T system used in the telephone systems.
SimpleVR is a speaker-independent voice recognition module designed to add versatile, robust and cost effective speech and voice recognition capabilities to almost any application. Different from another voice recognition module Speak Recognition, Voice Recognition Module V3, SimpleVR is speaker-independent. The LPC54114 Audio and Voice Recognition Kit provides a complete hardware and software platform for developers to evaluate and prototype with the LPC54114 processor family. It has been developed by NXP ® to provide all that you need to develop an always-on low power voice triggering product.
Recognition Style
Speech recognition systems have another constraint concerning the style of speech they can recognize. They are three styles of speech: isolated, connected and continuous.
Isolated speech recognition systems can just handle words that are spoken separately. This is the most common speech recognition systems available today. The user must pause between each word or command spoken. The speech recognition circuit is set up to identify isolated words of .96 second lengths.
Connected is a half way point between isolated word and continuous speech recognition. Allows users to speak multiple words. The HM2007 can be set up to identify words or phrases 1.92 seconds in length. This reduces the word recognition vocabulary number to 20.
Continuous is the natural conversational speech we are use to in everyday life. It is extremely difficult for a recognizer to shift through the text as the word tend to merge together. For instance, 'Hi, how are you doing?' sounds like 'Hi,.howyadoin' Continuous speech recognition systems are on the market and are under continual development.
Speech Recognition Circuit
The demonstration circuit operates in the HM2007's manual mode. This mode uses a simple keypad and digital display to communicate with and program the HM2007 chip.
Figure 1
Keypad: The keypad is made up of 12 switches.
SimpleVR Command Tool(English)
When the circuit is turned on, the HM2007 checks the static RAM. If everything checks out the board displays '00' on the digital display and lights the red LED (READY). It is in the 'Ready' waiting for a command.
To Train
To train the circuit begin by pressing the word number you want to train on the keypad. The circuit can be trained to recognize up to 40 words. Use any numbers between 1 and 40. For example press the number '1' to train word number 1. When you press the number(s) on the keypad the red led will turn off. The number is displayed on the digital display. Next press the '#' key for train. When the '#' key is pressed it signals the chip to listen for a training word and the red led turns back on. Now speak the word you want the circuit to recognize into the microphone clearly. The LED should blink off momentarily, this is a signal that the word has been accepted.
Continue training new words in the circuit using the procedure outlined above. Press the '2' key then '#' key to train the second word and so on. The circuit will accept up to forty words. You do not have to enter 40 words into memory to use the circuit. If you want you can use as many word spaces as you want.
Testing Recognition
The circuit is continually listening. Repeat a trained word into the microphone. The number of the word should be displayed on the digital display. For instance if the word 'directory' was trained as word number 25. Saying the word 'directory' into the microphone will cause the number 25 to be displayed.
Error Codes
The chip provides the following error codes:
55 = word too long 66 = word too short 77 = word no match
macOS Catalina introduces Voice Control, a new way to fully control your Mac entirely with your voice. Voice Control uses the Siri speech-recognition engine to improve on the Enhanced Dictation feature available in earlier versions of macOS.1
How to turn on Voice Control
After upgrading to macOS Catalina, follow these steps to turn on Voice Control:
Choose Apple menu > System Preferences, then click Accessibility.
Click Voice Control in the sidebar.
Select Enable Voice Control. When you turn on Voice Control for the first time, your Mac completes a one-time download from Apple.2 Voice Control preferences
When Voice Control is enabled, you see an onscreen microphone representing the mic selected in Voice Control preferences.
To pause Voice Control and stop it from from listening, say 'Go to sleep' or click Sleep. To resume Voice Control, say or click 'Wake up'.
How to use Voice Control
Get to know Voice Control by reviewing the list of voice commands available to you: say 'Show commands' or 'Show me what I can say'. The list varies based on context, and you may discover variations not listed. To make it easier to know whether Voice Control heard your phrase as a command, you can select 'Play sound when command is recognised' in Voice Control preferences.
Basic navigation
Voice Control recognises the names of many apps, labels, controls and other onscreen items, so you can navigate by combining those names with certain commands. Here are some examples:
Open Pages: 'Open Pages'. Then create a new document: 'Click New Document'. Then choose one of the letter templates: 'Click Letter. Click Classic Letter'. Then save your document: 'Save document'.
Start a new message in Mail: 'Click New Message'. Then address it: 'John Appleseed'.
Turn on Dark Mode: 'Open System Preferences. Click General. Click Dark'. Then quit System Preferences: 'Quit System Preferences' or 'Close window'.
Restart your Mac: 'Click Apple menu. Click Restart' (or use the number overlay and say 'Click 8').
You can also create your own voice commands.
Number overlays
Use number overlays to quickly interact with parts of the screen that Voice Control recognises as clickable, such as menus, checkboxes and buttons. To turn on number overlays, say 'Show numbers'. Then just say a number to click it.
Number overlays make it easy to interact with complex interfaces, such as web pages. For example, in your web browser you could say 'Search for Apple stores near me'. Then use the number overlay to choose one of the results: 'Show numbers. Click 64'. (If the name of the link is unique, you might also be able to click it without overlays by saying 'Click' and the name of the link.)
Voice Control automatically shows numbers in menus and wherever you need to distinguish between items that have the same name.
Grid overlays
Use grid overlays to interact with parts of the screen that don't have a control, or that Voice Control doesn't recognise as clickable.
Say 'Show grid' to show a numbered grid on your screen, or 'Show window grid' to limit the grid to the active window. Say a grid number to subdivide that area of the grid, and repeat as needed to continue refining your selection.
To click the item behind a grid number, say 'Click' and the number. Or say 'Zoom' and the number to zoom in on that area of the grid, then automatically hide the grid. You can also use grid numbers to drag a selected item from one area of the grid to another: 'Drag 3 to 14'.
To hide grid numbers, say 'Hide numbers'. To hide both numbers and grid, say 'Hide grid'.
Dictation
When the cursor is in a document, email message, text message or other text field, you can dictate continuously. Dictation converts your spoken words into text.
To enter a punctuation mark, symbol or emoji, just speak its name, such as 'question mark' or 'per cent sign' or 'happy emoji'. These may vary by language or dialect.
To move around and select text, you can use commands such as 'Move up two sentences' or 'Move forward one paragraph' or 'Select previous word' or 'Select next paragraph'.
To format text, try 'Bold that' or 'Capitalise that', for example. Say 'numeral' to format your next phrase as a number.
To delete text, you can choose from many delete commands. For example, say 'delete that' and Voice Control knows to delete what you just typed. Or say 'Delete all' to delete everything and start over.
Voice Control understands contextual cues, so you can seamlessly transition between text dictation and commands. For example, to dictate and then send a birthday greeting in Messages, you could say 'Happy Birthday. Click Send.' Or to replace a phrase, say 'Replace I’m almost there with I just arrived'.
You can also create your own vocabulary for use with dictation.
Create your own voice commands and vocabulary
Create your own voice commands
Open Voice Control preferences, such as by saying 'Open Voice Control preferences'.
Click Commands or say 'Click Commands'. The complete list of all commands opens.
To add a new command, click the add button (+) or say 'Click add'. Then configure these options to define the command:
When I say: Enter the word or phrase that you want to be able to speak to perform the action.
While using: Choose whether your Mac performs the action only when you're using a particular app.
Perform: Choose the action to perform. You can open a Finder item, open a URL, paste text, paste data from the clipboard, press a keyboard shortcut, select a menu item or run an Automator workflow.
Use the checkboxes to turn commands on or off. You can also select a command to find out whether other phrases work with that command. For example, 'Undo that' works with several phrases, including 'Undo this' and 'Scratch that'.
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To quickly add a new command, you can say 'Make this speakable'. Voice Control will help you configure the new command based on the context. For example, if you speak this command while a menu item is selected, Voice Control helps you make a command for choosing that menu item.
Create your own dictation vocabulary
Open Voice Control preferences, such as by saying 'Open Voice Control preferences'.
Click Vocabulary, or say 'Click Vocabulary'.
Click the add button (+) or say 'Click add'.
Type a new word or phrase as you want it to be entered when spoken.
Learn more
For the best performance when using Voice Control with a Mac notebook computer and an external display, keep your notebook lid open or use an external microphone.
All audio processing for Voice Control happens on your device, so your personal data is always kept private.
Use Voice Control on your iPhone or iPod touch.
Learn more about accessibility features in Apple products.
1. Voice Control uses the Siri speech-recognition engine for U.S. English only. Other languages and dialects use the speech-recognition engine previously available with Enhanced Dictation.
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2. If you're on a business or school network that uses a proxy server, Voice Control might not be able to download. Have your network administrator refer to the network ports used by Apple software products.