Voice chip and single chip microcomputer is the perfect combination of digital magic and microcomputer. Voice chip is a kind of hardware device that can store and play voice information, which usually contains digital signal processor (DSP) and memory, which can convert voice signal into digital signal for storage and playback.
Parallel control form voice chip provides key interface,The input and output port of the single chip microcomputer can control the key interface of the voice chip to record, play, delete, and operate before and after. There is also a voice microcontroller. After the voice is recorded by the developing board or the burner, the single chip microcomputer controls the key interface for single segment playback, cyclic playback, pause, stop and other operations.
The first kind, called OTP, is the kind of SOP8 package voice chip, built-in several commonly used voice, after the factory is dead, can not be modified the second kind, called flash voice chip, usually a master chip attached to a spiflash, the master chip is unchangedflash can be repeatedly burned, but the voice often only supports wav, so the sound quality will be very poor compression.
1, speech recognition chip compared with the traditional voice chip, the biggest feature of the speech recognition chip is to be able to voice recognition, it can make the machine understand the human voice, and can perform various actions according to the command, such as blinking eyes, moving the mouth (smart doll).
2, with the speech recognition engineEnough matching, so that the speech recognition model and signal processing signal is consistent, so that the best recognition effect will be achieved.
3, interactivity: the voice recognition chip can allow smart toys to have a more natural and direct interaction with children, so as to better enhance children's communication and social skills.
4, intelligent lighting switch manufacturers prefer nine core electronics low-cost NRK3301 offline voice chip to achieve voice control switch. NRK3301 speech recognition chip is offline speech recognition chip, using the latest neural network (TDNN) algorithm, with recognition precisionIncluding materials, manufacturing process, labor and equipment.
2, cost: the price of voice recognition chip is also an important consideration, need to choose the right chip according to budget and application needs. Technical support and after-sales service: Choosing manufacturers and chip brands with good technical support and after-sales service can ensure the stability and reliability of the system, and it is necessary to consider choosing suppliers with perfect technical support.
3, for example, the price of inert gas, as well as the processing technology and size of the chip.
1, the principle of universality: the selected voice chip should be widely used and verified, and have been studied by a large number of experiments. 2) The principle of high cost performance: In the case of similar functions, performance and utilization, try to choose inexpensive voice chips to reduce costs. 3) The principle of convenient procurement: try to choose chips that are easy to buy and have a short supply cycle.
2, speech recognition chip compared with the traditional voice chip, the biggest feature of the speech recognition chip is to be able to voice recognition, it can make the machine understand human speech, andAnd can perform various actions according to the command, such as blinking eyes, moving the mouth (smart doll). In addition, the speech recognition chip also has the function of high-quality and high compression rate recording and playback, which can realize man-machine dialogue.
3, the main features of the voice chip are low power consumption, strong anti-interference ability, fewer peripheral devices, simple control, long voice storage time (some voice chips can save the content for 100 years), no loss of voice after power failure, some chips can also repeatedly erase and write the voice content. Such as car reversing radar, bus stopping device, bank queue machine, voice toys, anti-theft system and other equipment are equipped with voice chips.
4, chip algorithm quality: offline speech recognition chip performance depends on its built-in recognition algorithm. The accuracy and robustness of the algorithm will directly affect the accuracy of the recognition. Speech quality: The clarity, sound quality, and level of interference of speech affect the accuracy of recognition. Noisy environments and low-quality recordings can lead to identification errors or reduced accuracy.
5, chip design quality: voice chip design is an important factor affecting the stability of performance. Designers need to take into account aspects such as circuit layout, signal processing algorithms, noise suppression techniques, etc., to ensure that the chip can be used under various conditionsProvides stable performance. Hardware quality: The manufacturing quality of the chip has a direct impact on performance stability.
6, software algorithm: The anti-interference of OTP voice chip is also related to the software algorithm used inside the chip. Usually, OTP voice chips contain some noise reduction algorithms to help improve the accuracy and anti-interference of speech recognition. To sum up, the anti-interference of OTP voice chip is affected by many factors, and it is necessary to comprehensively consider hardware design, audio quality and software algorithm to better improve the signal-to-noise ratio and anti-interference of the chip.
1, Hengxuan was founded in 2015, Hengxuan technology headquarters is located in Shanghai Hengxuan Technology is mainly engaged in intelligent audio SoC chip research and development, design and sales, provide AIoT scene with voice interaction ability of edge intelligent master control platform chip, products are widely used in smart Bluetooth headset, Type-C headset, smart speaker and other intelligent terminal products.
2, hisilicon was founded in 2004, formerly known as 199Huawei IC Design Center, established one year ago, is the world's leading Fabless semiconductor and device design company, and its launched Kirin, Balong, Kunpeng and Centeng chips have a leading edge in mobile phones, mobile terminals, communications, data centers, AI and other fields.
3, the domestic chip leading representative Torch core technology is definitely an outstanding representative, more than 20 years of deep cultivation in the field of sound, the research of sound has an exclusive advantage, the launch of many intelligent voice platform has been adopted by many frontline brands at home and abroad, the market reputation is very good, high requirements of customers' actual combat is Torch core products excellent foundation for many years. The new intelligent voice chip platform ATS3607 (D) is recommended.
1, use WT588D voice chip. WT588D is a commonly used voice chip, which can be used with 51 single chip microcomputer to realize voice broadcasting function. In the design of bus station announcement system, WT588D can be used as recording module, which is controlled by 51 MCU to play different voice files.
2, can use speech recognition chip LD3320, circuitFigure you just under its pdf can know, pdf inside there are typical applications. But I recommend you not to use this chip, it should be more expensive about 100 yuan. I recommend you to use the Sun 61 microcontroller, with its own voice recognition module, designed for speech. And the official provides many functions, you can call directly, do not need to write their own programs to control the intermediate processing of sound.
3, recommended to use YQ5969, the module series can support 1-8 mics, the voice chip can provide different programs of single-core - 4-core 32bit ARM core according to the specific needs of customersCan support local and cloud to identify different needs. The local recognition rate within 5 meters is more than 93%, and the cloud recognition rate is 97%.
4, WTV series voice chip by Waytronic company production, with different models and functions, these chips can be controlled by key or serial port control, support recording and playback of multiple voice, with different storage capacity and playback time.
5, engage in microcontroller will not buy a voice chip, a buzzer can be, the caliber should be larger, specific programming with interrupt timer loading time is a variable this variable needs 7 set 7Tune, and ask someone who knows music.