Speech Recognition Circuit
Description: 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. 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 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.
The circuit utilizes the HM2007 speech recognition chip, which is designed for manual operation through a user-friendly interface comprising a keypad and a digital display. Upon powering the circuit, the HM2007 performs a self-check on the static RAM to ensure functionality. A successful check is indicated by the display showing "00" and the activation of the red LED, which signifies that the system is ready to receive commands.
To initiate the training process, the user selects a word number from 1 to 40 using the keypad. Once a number is pressed, the red LED turns off, and the selected number is shown on the digital display. The user must then press the "#" key to signal the HM2007 to enter training mode. In this mode, the red LED reactivates, indicating that the system is prepared to record a new voice command.
The user must speak the desired word clearly into the microphone. The system acknowledges the input by momentarily turning off the LED, which serves as a confirmation that the word has been successfully recorded. The training process can be repeated for additional words by following the same steps: selecting a number, pressing "#", and speaking the word.
The circuit is designed to continuously listen for commands after training. When a trained word is spoken into the microphone, the HM2007 processes the input and displays the corresponding word number on the digital display. This feature allows for effective testing and validation of the recognition capabilities of the circuit. For example, if the word "directory" has been trained as the 25th word, saying "directory" will prompt the display to show the number 25, confirming successful recognition. The system's flexibility allows users to train fewer than the maximum of 40 words, accommodating a variety of applications and user preferences.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. 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 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.
The circuit utilizes the HM2007 speech recognition chip, which is designed for manual operation through a user-friendly interface comprising a keypad and a digital display. Upon powering the circuit, the HM2007 performs a self-check on the static RAM to ensure functionality. A successful check is indicated by the display showing "00" and the activation of the red LED, which signifies that the system is ready to receive commands.
To initiate the training process, the user selects a word number from 1 to 40 using the keypad. Once a number is pressed, the red LED turns off, and the selected number is shown on the digital display. The user must then press the "#" key to signal the HM2007 to enter training mode. In this mode, the red LED reactivates, indicating that the system is prepared to record a new voice command.
The user must speak the desired word clearly into the microphone. The system acknowledges the input by momentarily turning off the LED, which serves as a confirmation that the word has been successfully recorded. The training process can be repeated for additional words by following the same steps: selecting a number, pressing "#", and speaking the word.
The circuit is designed to continuously listen for commands after training. When a trained word is spoken into the microphone, the HM2007 processes the input and displays the corresponding word number on the digital display. This feature allows for effective testing and validation of the recognition capabilities of the circuit. For example, if the word "directory" has been trained as the 25th word, saying "directory" will prompt the display to show the number 25, confirming successful recognition. The system's flexibility allows users to train fewer than the maximum of 40 words, accommodating a variety of applications and user preferences.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. 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 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.
1A Low Noise High Current LED Torch/Flash
An ultralow dropout current source maintains accurate LED current at very low ILED voltages. Automatic mode switching optimizes efficiency by monitoring the voltage across the LED current source and switching modes only when ILED dropout is detected. The LTC3216 is...
up down fading led
These two circuits create a fading effect for an LED. The first circuit charges a 100µF capacitor, and a transistor amplifies the current entering the capacitor, delivering 100 times this value to the LED through the collector-emitter pins. The circuit...
20 & 30 Segment LED Voltmeters
The circuit can be easily configured for full-scale voltages of either 20 or 200 volts by utilizing a suitable potentiometer on the input. It is critical not to exceed 30 volts at pin 5 of the LM3914. A 20 kΩ...
heroine clock
This 6" x 18" clock requires 52 light sources and aims to enable individuals to read the time without glasses. For 25 years, the search for sufficiently large clocks that could be seen without glasses proved fruitless, leading to the...
A Simple Keypad-Operated Switch - with enhanced security
This is a universal four-digit keypad-operated switch with a unique feature. Instead of entering the security code one digit at a time, all four keypad buttons must be pressed simultaneously. This means the four numbers must be entered in parallel,...
Low Cost Dimmable Led Ballast Using The Valley Fill Current Shaping Circuit
The BFP640 transistor is utilized for 1575 MHz Global Positioning Satellite (GPS) applications, specifically as a Low Noise Amplifier (LNA). The design objectives include a minimum gain of 16 dB, a noise figure of less than 0.6 dB, an input/output...
Led sequencer/scanner
Yes, both of those transistor types will be suitable. Is the "sn9304" a 2N3904? That's a common type. You're going to have four LEDs on at a ...
The context indicates the use of transistors, specifically the 2N3904 or potentially a...
Display Backlighting Using High-Brightness LEDs and SEPIC Power Modules
This application note discusses the use of SEPIC power modules to supply the necessary power for driving high-brightness LED arrays. These arrays serve as display backlights and necessitate a wide dimming range. The SEPIC configuration offers an efficient and adaptable...
36 Led Flasher Driver Circuit
Originally designed as a three-bell animation circuit for Christmas decorations, this circuit can also be utilized for various other applications that require a flashing effect. By reconfiguring U2 (refer to the data manual), it is possible to achieve more than...