In many devices requires the ability to receive, process or respond to incoming sounds from the environment. Existing microphones and sound detectors not only record high-quality sound, but also allow you to add in a simple way the functions of "hearing" Her new robot. Select the module or element depends primarily on what the function should perform a microphone built in the device.
Module with silicon microphone, MEMS type, which does not require amplifier. It detects sound with frequency from 100 Hz to 10 kHz and converts it into an analog output signal that can be read using the A/D converter. The device operates with a voltage from 3.3 V to 5 V.
Synthesizer for modifying a string of text to human speech. It can read the text sent in UART connection. Built-in two languages, English and Spanish, and 9 different voices. It can be used, for example, in the construction of a talking robot.
This project shows how to start the recognition of a natural language and how to link it with Google Assistant using a voice set AIY Projects. To everything that Google Assistant do, you can add your own questions and answers. All is closed in a small, cardboard cube powered by Raspberry Pi.
Audio detector with power voltage range from 3.5 to 5.5 V. The module is easy to use, it has three outputs: analog - to measure the intensity of the signal, digital is changing the state when exceeding a certain level and the audio output. The module has a soldered connector.
Audio detector powered with the voltage ranging from 3.5 to 5.5 V. The module is easy to use, it has three outputs: an analog - to measure the intensity of the signal, digital - is changing the status when exceeding a certain level and the audio output.
Sound recording module based on ISD1820. It has a built-in microphone and a speaker attached. Built-in functions allow you to record and playback audio for up to 20 seconds. The device does not have nonvolatile memory. Supply voltage ranging from 3 V to 5 V.
Vioce recorder module based on ISD1820. It has a built-in microphone and a jack connector for speakers or headphones. Built-in functions allow you to record and playback audio of up to 10 sec. The supply voltage is 5 V. The module operates in connection with the Arduino modules. The kit includes a cable adapted to DFRobot IO Expansion Shield.
Audio detector powered with the voltage ranging from 3.3 V to 5 V. The module is easy to use, it has two outputs: analog - to measure the intensity of the signal and digital - changing the status when exceeding a certain level.
Sound sensor module with analog and digital output. It works with supply voltage from 3.3 V to 5.3 V. It allows you to detect the volume or the identification of characteristic sounds from the environment, for example clapping hands.
The module is equipped with an equalizer MSGEQ7. It allows you to add audio detection for Arduino sound. It has 7 frequency bands: 63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.25 kHz and 16 kHz. The module can be used to create a visualization of sound patterns in music or add audio activation to the microcontroller.
The module is based on the KA2284 system. It is used to measure the input signal with the 5 LEDs, which are gradually included depending on the value of the measured voltage. It can measure voltage AC or DC (selected using jumpers). Sensitivity is adjustable with a potentiometer. Works with voltages from 3.5 V to 12 V.
Microphone for use at home, with a frequency range from 40 Hz to 16 kHz. Equipped with a mini-tripod and a cable with plug, length 2 meters. It allows you to record human speech and the sound of the instruments, without distortion and noise.
The module is equipped with electret microphone in the range from 20 Hz to 20 kHz and MAX4466 amplifier with automatic gain control. The intensity of the work in the amount of 2.4 V to 5 V. It has the ability to adjust the gain from 25x to 125x.
The sound detector with a small microphone, a voltage supply range from 3.3 V to 5 V. The module is easy to use, has two outputs: an analog - to measure the intensity of the digital signal and changing state when exceeding a certain level.
Iduino module with digital sound sensor. The detection is carried out using the electret microphone. It works with a supply voltage from 3.3 V to 5 V. This enables the determination of the volume or identifying characteristic sounds from the environment, for example, clapping hands.
Identity module voice based on Nuvoton ISD9160 with built-in microphone. There are some Grove connectors for easy connection pad of the Base Shield. Communicates via SPI interface. The module is supplied with the voltage from 3 V to 5 V.
Module sound recording on the basis of the layout ISD9160FI equipped with 2 MB of flash memory , making possible the preservation of the record length of 83 seconds. The Registrar can be used with a control module, such as the Arduino as a standalone device. Works with a voltage of 3.3 V.
Translator Langogo Genesis is a device that allows for translation of sentences or holding a conversation in two different languages in real-time. Database translator supports more than 100 languages, of which 8 have already been constantly implemented in the device.
The current market for microphones is dominated by mainly three types of structures differing in acoustic parameters, connection method, as the size and price.
Electret microphone – microphone design makes that sound processing is done on the principle of changes in the capacitance of a special condenser, in which one of the brake the movable membrane. Vibrations in the air cause a vibration of the membrane, which leads to a capacitance change to the beat of the sound wave.
The microphone contact. (with activated carbon), which is used widely in the last century have completely given way to the modern mikrofonom elektretowym.
A piezoelectric microphone uses the phenomenon of piezoelectric vibrations in the air cause a slight deformation of the membrane, which leads to the formation of a small AC voltage to the beat of the sound wave.
The other type of microphones receiving increasingly popular, especially among mobile devices, the MEMS microphones. Systems MEMS is a miniature of the elements of electro-mechanical, in which everything – both electronic and mechanical – are made from a single block of semiconductor. This solution not only provides an incredibly small size, but also very good sound quality. There are microphones with analog output and digital interface, greatly simplifying the connection of the microphone to the more advanced microcontrollers.
If does not depend on us to register the full range of sound, and only detects his presence and light level (e.g. with arduino), you should purchase one of the modules for the detection of sound. If the sound quality makes a difference, as the MIC for recording, e.g., music, speech and environmental sounds, is to use a USB microphone. It offers customers can use one of the available microphones elektretowych in the role of the microphone of the car.