HM – Self-contained stand alone speech recognition circuit, User Programmable through keys. 2 No’s of 7-Segment Display (To Display Voice Recognize. The heart of the circuit is the HM speech recognition IC. AVR SELF LEARNING KIT–Interfacing 16 x 2 LCD in 8 bit ModeIn “AVR. Model #: Product’s Page: Speech Recognition System based on HM The speech recognition system.

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Notify me of new comments via email. Thanks for dropping by alselectro! Before starting the training process we can erase the previous memory.

HM Speech Recognition Kit

Fill in your details below or click an icon to recogntion in: Provide a separate 12v DC power source to L board. The board requires 5v DC supply. Say the target word into the onboard microphone near LED clearly. An 8 kB external RAM is needed to store data.

To stop the motor decimal 08 is assigned. You are commenting using your Facebook account. This L can drive 2 motors at a time.

Take care to avoid using this board in Noisy places. You are commenting using speeech Twitter account. Let us test the board by connecting to a Motor through a motor driver board L The 8 bit data is passed through an octal latch IC 74HC Check out the table below to see how to achieve a number for a Word.


This can then be later connected to a microcontroller for further functions. This 8 bit data can be directly connected to a port of Microcontroller for further action.

HM – Speech Recognition Chip

In the training process user trains the IC by speaking words into the microphone and. Functioning of L can be understood from this post. Motor Control by Voice Recognition. You are commenting using your WordPress.

This site uses cookies. To display the command numbers 2 common cathode 7 segment displays are provided.

It is not necessary to train all word spaces. Training Words for Recognition: To find out more, including how to control reccognition, see here: The IC can recognize 20 words, each word a length of 1. The circuit will accept and recognize up to 20 words numbers 01 through Email required Address never made public. In the training process user trains the IC by speaking words into the microphone and assigning a particular value for that word.

Blog Stats 1, hits Follow Blog via Email Enter your email address to follow this blog hj2007 receive notifications of new posts by email. The calculation of arriving at these values are shown in table above.

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A 12v adapter can kif used as a power source, as the board has inbuilt 5v regulator with heat sink. The heart of the circuit is the HM speech recognition IC.

If the system has to work under noisy environments, background noise may corrupt the original data and leads to malfunctioning.


As the RAM is volatilea 3v button battery is used to backup stored data. RoboticsUncategorized — 1 Comment.

You may continue training new words in the circuit. By continuing to use this website, you agree to their use. It is used in Robotics to control motors according to voice commands. Take a look around and grab the RSS feed to stay updated. To rotate LEFT a decimal value of 18 is assigned. Leave a Reply Cancel reply Enter your comment here May 16, at Speech samples are acquired by a Microphone on board.

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