General voice chip internal SPI-FLASH, built-in voice, but there are some voice chips can be inserted TF card or U disk, USB cable connection to play their first voice, of course, there is now a wireless audio Bluetooth control: WTZ2061 is a high-performance Bluetooth audio module. Includes a Bluetooth communication IC for receiving wireless audio signals transmitted from an audio transmitting source, such as mobile phones, Bluetooth adapters, etc.; Also included is an audio decoding IC with a 16-bit output DAC that can be pushed directly into the headset or power amplifier.
Bluetooth audio module based on CLASS2 power grade, using Bluetooth2.1 EDR specification compatible with Bluetooth 3.0 and below, transmission speed can reach 3M bit\/s. Support hands-free mode or high quality audio mode switching; It has the characteristics of simple application, superior sound quality, high sensitivity, small size, long transmission distance, etc. In the barrier-free environment, the module with a test working distance of more than 20M adopts standard button design, and the button circuit is simple and easy to use; The echo cancellation function is added to the hands-free function, which can avoid the echo interference of the caller during the call, and the call performance is better. WTZ2061 Feature 2. Bluetooth2.1 EDR specification is adopted. Compatible with Bluetooth 3.0 and below 2. Support L2CAP\/A2DP(AVD DP \/AVCRP), used to receive stereo audio signals, through the protocol can control the audio transmitter up-and-down bend operation 2. Support HFP(Handsfree profile), with hands-free function, you can carry out language communication2. Hands-free call function, communication voice echo cancellation processing, to ensure call quality 2. Using SPI flash firmware, you can configure parameters according to the requirements and modify the application as required. Standard button design, simple definition, easy to use 2 module has 2 G PIO can be used to drive the LED to indicate the working status of the Bluetooth module 2. At the beginning of the design, external power amplifier MUTE signal output 2.16bit DAC output high-quality audio, which can directly drive 40mW C32 headphone 2.1 Obit ADC mono MIC input 2. Relatively wide operating voltage range (3.3V- 5V) the initial battery powered 2. Support low-power mode sniff mode, power saving mode (power saving mode supports audio transmitter wake up and external key wake up mode, the default time to enter the power saving mode is 15min) 2. Support UAR Ding interface communication above do not know if it will help you