Introduction to educational toy set voice IC

In fact, language IC can be used not only in the development of educational toys, but also in interactive toys, educational toys, handheld game consoles, electronic dictionaries, e-books, and various related products that require voice and music. Specifically, Group Chuang Microelectronics will introduce to you:

Voice IC introduction

Voice IC, as the name suggests, is an IC that can store and control the playback of decoded voice. We basically use Songhan’s voice IC. Songhan has many types: according to the number of channels, there are voice ICs with 1, 2, 4, 12, and 24 channels, and some special functions: such as touch, LCD , high-compression DSP IC, and there are 4Bit, 8Bit, 16Bit and other ICs according to the number of digits, which are widely used in interactive toys, educational toys, handheld game consoles, electronic dictionaries, e-books and various voice, Music products.

voice introduction

Classification of sounds: Generally speaking, sounds are divided into three categories: Voice, Tone, and Midi.

Voice generally refers to voice, speaking sounds, etc., and is generally put into the IC in Wav format. Tone and Midi can be converted into Wav through a computer and then put into the voice IC as voice form, but it will take up a lot of space!

Tone is produced by adjusting the output frequency Do Re Me..., we use it less now.

Midi uses some timbres to synthesize colorful musical chords. For example, if we want to generate a piano Do Re Me... we will use a standard piano sound Do tone, and then change its playback speed and use a certain method to generate Do Re Me with 8 degrees higher and 8 degrees lower... More Note.

Voice Introduction: Midi

The timbre is a wav file, and generally the sampling frequency will be relatively high to achieve good results. Usually, the sampling frequency is 16k~22k, so it will occupy a certain amount of space, and the capacity occupied depends on the amount of timbre. But a MIDI only requires a few timbres. "DualTone.wav" is the effect of Tone, "midi.wav" is the Midi file that has been converted into WAV format and can be played directly with Voice IC. Its multi-channel Midi format file is "Music.mid".

Therefore, the IC capacity occupied by Midi cannot be calculated by the length but by the amount of timbre.

When the customer mentions the sound as music, it is necessary to ask whether it is Midi. If so, the calculation method would be different.

Group Innovation launches voice chip series

1. SNC27/27P series, SNC32/32P series, SNC36 four-channel, SNC86 series 8-channel, SNC7648,7232 DSP series.

2. Some of Alpha's cost-effective chips (that is to say, if the price of Sonix cannot be accepted by the market, you can consider the corresponding Aohua chip), especially Alpha's AM9AC, AM4EG, AM32A/B series, etc.

3. Some of the company's specific platform solutions include: voice recognition, voice control, 2.4G remote control sound toys, local speech recognition, etc. (to be sold as standard PCBA modules in 2019).

Shenzhen Zuchuang Microelectronics Co., Ltd. is a professional electronic and electrical solution development, design and chip agency company. It is mainly engaged in the design and development of software and hardware for educational electronic products, small household appliances, educational toys, smart homes and other consumer electronic products. Can provide MCU, voice IC, Bluetooth IC and module, wifi module. The development capabilities cover PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development and other hardware and software design.