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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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To rotate LEFT a decimal value of 18 is assigned. May 16, at Leave a Reply Cancel reply Enter your comment here The board requires 5v DC supply.

Say the target word into the onboard microphone near LED clearly. To display the command numbers 2 common cathode 7 segment displays are provided.


You are commenting using your Twitter account. You are commenting using your WordPress. If the system has to work under noisy environments, background noise recognotion corrupt the original data and leads to malfunctioning. The circuit will accept and recognize up to 20 words numbers 01 through You may continue training new words in the circuit.

This L can drive 2 motors at a time. Take care to avoid using this board in Noisy places.


You are commenting using your Facebook account. The heart of the circuit is the HM speech recognition IC.

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HM – Speech Recognition Chip

In the training process user trains the IC by speaking words into the microphone and assigning a particular value for that word. Speech samples are acquired by a Microphone on board. Before starting the training process speexh can erase the previous memory. Thanks for dropping by alselectro! The calculation of arriving at these values are shown in table above.

By continuing spech use this website, you agree to their use. As the RAM is volatilea 3v button battery is used to backup stored data. Notify me of new comments via email. The IC can recognize 20 words, each word a length of 1. RoboticsUncategorized — 1 Comment. This can then be later connected to a microcontroller for further functions. Email required Address never made public.

Training Words for Recognition: Check out the table below to see how to achieve a number for a Word. Let us test the board by connecting to a Motor through a motor driver board L An 8 kB external RAM is needed to store data.


The 8 bit data is passed through an octal latch IC 74HC This 8 bit data can be directly connected to a port of Microcontroller for further action. To find out more, including how to control cookies, see here: It is not necessary to train all word spaces. To stop the motor decimal 08 is assigned. A 12v adapter can be used as a power source, as the board has inbuilt 5v regulator with heat sink.

Functioning of L can be understood from this post. In the training process user trains the IC by speaking words into the microphone and. It is used in Robotics to control motors according to voice commands. Motor Control by Voice Recognition.

Provide a separate 12v DC power source to L board. Fill in your details below or click an icon to log in: This site uses cookies.