1. ISD1420 is an American ISD publicThe high-quality single-chip voice recording and playback circuit produced by the company is composed of an oscillator, a voice storage unit, a preamplifier, an automatic gain control circuit, an anti-interference filter, and an output amplifier. A minimal recording and playback system consists of only a microphone, a speaker, two buttons, a power supply, and a few resistance capacitors.
2, ISD1420 voice combination wizard board is a minimal voice module, the user can not need to understand the internal mechanism of the voice chip and speech synthesis, just a simple external serial port control, you can directly on the speaker to obtain the ideal speech synthesis effect. The voice chip on the board is pluggable, choose ISD1420 chip. The compact structure of the Sprite board is only half the size of a cigarette box, and it can be flexibly and freely used in various user systems and various product Spaces in the way of standard component modules.
3, the ISD1420 voice chip may be able to solve your problem. The ISD1420 can be recorded/played in segments, up to 160 segments, and the maximum recording time is 20 seconds. The I/O pin of the microcontroller is connected with the speech segment address of the voice chip, and the programmable output of the voice can be realized by changing the speech segment address. Of course, it can also record/play the voice continuously for 20 seconds without segments.
4, WT588D is a voice chip with a single chip microcomputer core, so it can be named WT588D series voice single chip microcomputer. WT588D series voice microcontroller is an edit-able voice chip which is developed by Guangzhou Vitron Technology Co., Ltd. and Taiwan Huabang. It integrates single chip microcomputer and voice circuit.
1, the adjustment of the volume can be solved by adjusting the magnification of the amplifier triode (generally 9013) connected to the back of the chipSpeech recognition chips can help children carry out independent learning and language training, thereby improving their language expression and understanding ability.
The application of memory chip in toys: actively develop in children's toys, its large capacity to store voice is a very important condition, through the TF card, SD card, U disk to store voice, call its voice content. Change the sound at any time, through the form of USB flash drive or card to change the sound. It has the sound quality of high-quality MP3, the sound quality effect is more realistic, no longer need to convert the format, directly play in MP3 format, and has the decoding function of MP3.
There are many music chips, and the types are different. According to the characteristics of music output, we divide the music circuit into the following categories: single, polyphonic, music with flashing lights, singing; They are mainly used in music players, such as birthday card chips are single chip. The music chip is divided into recordable and unrecordable, and the recordable chip can record the voice of the person to the chip through the circuit, and then play it out through the circuit.
In the field of education, early education machines and children's audiobooks use voice chips to provide children with a rich variety of learning resources. On the intelligent transportation equipment, the voice broadcasting function of the bus station announer and the parking lot system is indispensableThe components of... In industrial control areas, such as elevators and industrial equipment, voice instructions and fault code voice interpretation functions can help workers understand and deal with problems more intuitively.
1, flexibility: OTP voice chip usually can only play the pre-recorded sound sample, so its sound content is fixed, the user cannot change. In contrast, the TTS voice chip has more flexibility and can be based on different text input by the userThis real-time synthesis of different speech.
2, this is embedded in the music chip, music chip is a relatively simple voice circuit, it through the internal oscillation circuit, and then a small amount of discrete components, can produce a variety of music signals, music chip is an important branch of the voice integrated circuit, Widely used in music electronic greeting cards, electronic toys, music candles, electronic clocks, electronic doorbells, household appliances and other occasions.
3, OTP voice chip refers to a one-time programming voice chip, it stores has been pre-programmed audio information, once programmed, these data can not be changed. The mainThe application scenarios are as follows: Audio prompt: The OTP voice chip can be used to provide voice reminder functions, such as alarm clocks and timers. Message broadcasting: The OTP voice chip can be used to broadcast messages, warnings or emergency notifications.