Characteristics and selection of Bluetooth voice chip modules

At present, the Bluetooth solutions we mainly promote include GY201 solution, GY301 solution, GY321F solution, and GY401 solution. These solutions are designed to meet different application scenarios. The principle we follow is that the hardware is the same but the software is different to meet customer needs.

Main features

1. Bluetooth audio playback, TF card U disk lossless playback, spiflash voice playback, I2S audio master-slave, serial port AT command control
2. Bluetooth BLE and SPP dual-mode digital transmission, AUX input, and FM functions. As well as functions such as reading and writing TXT files, recording, etc.
3. The only difference between GY1025A and GY1025B is that GY1025A is stereo, while GY1025B is mono. The main difference is that the pins of the chip are different, but the functions of the main body are exactly the same.
4. GY1025A and GY1025B are programmable, so we have developed many software versions to meet different application needs. It should be noted that: choose GY1025B for a single speaker and GY1025A for two speakers.

Application fields and shipping methods

1. Bluetooth audio transmission, application scenarios for connecting Bluetooth headsets, Bluetooth speakers and other slave devices
2. Can be shipped in the form of Bluetooth chips, Bluetooth modules, etc.
Bluetooth voice chip module solution classification

GY201 Bluetooth solution (optional chips: GY1025A-QSOP24, GY1025B-QS0P2 4)

1. Bluetooth audio, T card USB disk playback, Bluetooth BLE and SPP transparent transmission.
2. Serial port AT command control
3. Application scenarios:
(1), Bluetooth dual-mode data transmission, application of BIE
(2) Application scenarios of Bluetooth audio + data transmission

GY321F Bluetooth transmission solution (GY1025A-QSOP24, GY1025B-QSOP24)

1. Bluetooth audio stereo is transmitted to speakers or headphones
2. The emission source supports U disk, TF card, AUX, and SPIFLASH. Serial port AT command operation
3. Application scenarios
(1) Bluetooth transmitter + voice prompt type product
(2)Can emit spiflash sound
(3) As long as the product is connected to a Bluetooth headset and transmits audio, it is suitable

4. Suitable for adult vocal products, etc.

GY301 Bluetooth solution supports spiflash, AUX, FM, and Bluetooth (optional chips: GY1025A-QS0P24, GY1025B-QSOP24)

1. Bluetooth audio, TF card USB disk playback, Bluetooth dual-mode transparent transmission
2. Supports FLASH playback and USB sound downloading.
3. You can only choose 1 from 2 for SPIFLASH and T card.
4. Support AUX input and M function [this firmware needs to be separate]
5. Application scenarios:
(1), Bluetooth data transmission + voice prompt type product, suitable for: voice broadcast + Bluetooth data transmission
(2) The highlight is that it supports spiflash playback

GY401 Bluetooth module

1. Supports Bluetooth dual-mode digital transmission BL and SPP transparent transmission.
2. Audio DAC output, output from the host
3. Module BB certification, module shipment.
4. Suitable for module requirements, and also suitable for Bluetooth MIDI, OBD, printers, etc.
5. Application scenarios: Bluetooth data transmission + voice prompt type products support spiflash playback

Selection instructions

1. If you have a good understanding of Bluetooth and audio and have good drawing skills, it is recommended to use the chip directly. You can choose one of the solutions: GY201, GY301, or GY321F, and finally purchase the firmware chip of the corresponding solution.
2. If you don’t know about Bluetooth and don’t want to know about it, it is recommended to buy a module to save trouble. Because I design it myself, there are many problems, such as stability and noise, which are headaches. Therefore, it is recommended to purchase the module directly to save trouble.