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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Training Words for Recognition: As the RAM is volatilea 3v button battery is used to backup stored data. You may continue training new words in the circuit.

To display the command numbers 2 common cathode 7 segment displays are provided. This site refognition cookies. The circuit will accept and recognize up to 20 words numbers 01 through In the training process user trains the IC by speaking words into the microphone and assigning a particular value for that word.

An 8 kB external RAM is needed to store data. Take care to avoid using this board in Noisy places. It is used in Robotics to control motors according to voice commands. Functioning of L can be understood from this post. The calculation of arriving at these recognifion are shown in table above. RoboticsUncategorized — 1 Comment. Before starting the training process we can erase the previous memory.


This L can drive 2 motors at a time. If the system has to work under noisy environments, background noise may corrupt the original data and leads to malfunctioning. May 16, at Notify me of new comments via email. To find out more, including how to control cookies, see here: Fill in your details below or click an icon recognitionn log in: It is not necessary to train all word spaces.

This can then be later connected to a microcontroller for further functions. To stop the motor decimal 08 is assigned.

You are commenting using your Twitter account. Say the target word into the onboard microphone near LED clearly.

Voice Recognition board HM – How to control a motor using voice commands | alselectro

Check out the table below to see how to achieve a number for a Word. You are commenting using your Facebook account.

The board requires 5v DC supply. Speech samples are acquired by a Microphone on board. In the training process user trains the IC by speaking words into the microphone and. The heart of the circuit is the HM speech recognition IC. This 8 bit data can be directly connected to a port of Microcontroller for further action. Provide a separate 12v DC power source to L board. To rotate LEFT a decimal value of 18 is assigned. Blog Stats 1, hits Follow Blog via Email Enter your email address to follow this blog and receive notifications of new posts by email.



Thanks for dropping by alselectro! The 8 bit data is passed through an octal latch IC 74HC The IC can recognize 20 words, each word a length of 1.

By continuing to hm22007 this website, you agree to their use. Motor Control by Voice Recognition. A 12v adapter can be used as a power source, as the board has inbuilt 5v regulator with heat sink.

You are commenting using your WordPress. Email required Address never made public. Let us test the board by connecting to a Motor through a motor driver board L Leave a Reply Cancel reply Enter your comment here Take a look around and grab the RSS feed to stay updated.