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HM2007 IC DATASHEET PDF

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does anyone have a datasheet of HM IC? It's a voice recognizer http:// musicmarkup.info SPEECH RECOGNITION, HM datasheet, HM circuit, HM data sheet: ETC1, alldatasheet, datasheet, Datasheet search site for Electronic. Visit us at musicmarkup.info Document: Datasheet Date: 6-Aug Model #: Product's The heart of the circuit is the HM speech recognition IC.


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HM is a single chip CMOS voice recognition LSI circuit with the on-chip Single chip voice recognition CMOS LSI contained within this data sheet. -. HM datasheet, HM pdf, HM data sheet, datasheet, data sheet, pdf, HMC, Speech recognition. Part Number: HM, HMC, File Type: PDF, Document: HM PDF Speech databook, Electronic, Components, Parameters, parts, cross reference, chip.

Programmable, in the sense that you train the words or vocal utterances you want the circuit to recognize. This board allows you to experiment with many facets of speech recognition technology. It has 8 bit data out which can be interfaced with any microcontroller for further development. Some of interfacing applications which can be made are controlling home appliances, robotics movements, Speech Assisted technologies, Speech to text translation, and many more. Features Self-contained stand alone speech recognition circuit User programmable Up to 20 word vocabulary of duration two second each Multi-lingual Non-volatile memory back up with 3V battery onboard. Will keep the speech recognition data in memory even after power off. Speech controlled appliances and toys Speech assisted computer games Speech assisted virtual reality Telephone assistance systems Voice recognition security Speech to speech translation 2 Introduction Speech recognition will become the method of choice for controlling appliances, toys, tools and computers.

The heart of the circuit is the HM speech recognition IC. The IC can recognize 20 words, each word a length of 1. The keypad is made up of 12 normally open momentary contact switches.

HM2007 Datasheet

Say the target word into the onboard microphone near LED clearly. The circuit signals acceptance of the voice input by blinking the LED off then on. You may continue training new words in the circuit. The circuit will accept and recognize up to 20 words numbers 1 through It is not necessary to train all word spaces. Testing Recognition: Repeat a trained word into the microphone.

The number of the word should be displayed on the digital display.

Error Codes: The chip provides the following error codes. The numbers will quickly scroll by on the digital display as the memory is erased.

If one wishes to erase the word without replacing it with another word press the word number in this case six then press the CLR key.

Word six is now erased. Simulated Independent Recognition The speech recognition system is speaker dependant, meaning that the voice that trained the system has the highest recognition accuracy. But you can simulate independent speech recognition. To make the recognition system simulate speaker independence one uses more than one word space for each target word.

Pdf hm2007 ic datasheet

Now we use four word spaces per target word. The word spaces 01, 02, 03 and 04 are allocated to the first target word.

Datasheet pdf ic hm2007

We continue do this for the remaining word space. For instance, the second target word will use the word spaces 05, 06, 07 and We continue in this manner until all the words are programmed. If you are experimenting with speaker independence use different people when training a target word. This will enable the system to recognize different voices, inflections and enunciation's of the target word.

The more system resources that are allocated for independent recognition the more robust the circuit will become. Homonyms Homonyms are words that sound alike. For instance the words cat, bat, sat and fat sound alike.

Because of their like sounding nature they can confuse the speech recognition circuit. When choosing target words for your system do not use homonyms. For instance assume you are sitting at your workbench and you program the target words like fire, left, right, forward, etc. Then you use the circuit to control a flight simulator game, Doom or Duke Nukem. To achieve a higher accuracy word recognition one needs to mimic the excitement in ones voice when programming the circuit.

These factors should be kept in mind to achieve the high accuracy possible from the circuit. This becomes increasingly important when the speech recognition circuit is taken out of the lab and put to work in the outside world. Error Codes When interfacing the external circuit through its data bus, The decoding circuit must recognize the word numbers from error codes.

looking for HM2007 datasheet

The word or utterance is now identified as the 01 word. You may continue training new words in the circuit. Press 2 then TRN to train the second word and so on. The circuit will accept and recognize up to 20 words numbers 1 through It is not necessary to train all word spaces.

If you only require 10 target words that s all you need to train. Testing Recognition: 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 20, saying the word directory into the microphone will cause the number 20 to be displayed. Error Codes: The chip provides the following error codes.

speech recognition using ic HM2007

The numbers will quickly scroll by on the digital display as the memory is erased. For instances suppose word six was the word Capital and you want to change it to the word State. If one wishes to erase the word without replacing it with another word press the word number in this case six then press the CLR key. Word six is now erased. Simulated Independent Recognition The speech recognition system is speaker dependant, meaning that the voice that trained the system has the highest recognition accuracy.

But you can simulate independent speech recognition. To make the recognition system simulate speaker independence one uses more than one word space for each target word. Now we use four word spaces per target word. Therefore we obtain four different enunciation s of each target word. The word spaces 01, 02, 03 and 04 are allocated to the first target word. We continue do this for the remaining word space.

For instance, the second target word will use the word spaces 05, 06, 07 and We continue in this manner until all the words are programmed. If you are experimenting with speaker independence use different people when training a target word. This will enable the system to recognize different voices, inflections and enunciation's of the target word.

The more system resources that are allocated for independent recognition the more robust the circuit will become. If you are experimenting with designing the most robust and accurate system possible, train target words using one voice with different inflections and enunciation's of the target word. For instance the words cat, bat, sat and fat sound alike.

(PDF) Speech Recognition System based on HM | frezer kebede - musicmarkup.info

Because of their like sounding nature they can confuse the speech recognition circuit. When choosing target words for your system do not use homonyms. This affects the accuracy of the circuit s recognition. For instance assume you are sitting at your workbench and you program the target words like fire, left, right, forward, etc. Then you use the circuit to control a flight simulator game, Doom or Duke Nukem.

Ic datasheet pdf hm2007

Well, when you re playing the game you ll likely be yelling FIRE! In the heat of the action you re voice will sound much different than when you were sitting down relaxed and programming the circuit.

To achieve a higher accuracy word recognition one needs to mimic the excitement in ones voice when programming the circuit. These factors should be kept in mind to achieve the high accuracy possible from the circuit. This becomes increasingly important when the speech recognition circuit is taken out of the lab and put to work in the outside world. Error Codes When interfacing the external circuit through its data bus, The decoding circuit must recognize the word numbers from error codes.

So the circuit must be designed to recognize error codes 55, 66 and 77 and not confuse them with word spaces 5, 6 and 7. Voice Security System This circuit isn t designed for a voice security system in a commercial application, but that should not prevent anyone from experimenting with it for that purpose.

A common approach is to use three or four keywords that must be spoken and recognized in sequence in order to open a lock or allow entry.