Principle circuit of voice playback using ISD4004

The voice storage and playback module uses ISD4004 from ISD. The voice device adopts multi-level direct analog storage (Chip Corder) patent technology, the sound does not need to be A / D converted and compressed, and each sample value is directly stored in the on-chip FLASH Memory, thereby avoiding the general solid recording circuit quantization and compression Quantization noise and metallic sounds caused. The picture shows the principle circuit of voice playback. Voice input is directly connected to the differential drive input of the ISD4004 pins IN + and IN- through the microphone (MIC). The voice output terminal is amplified by LM386 and connected to the voice output terminal of the radio station. The system adopts keyed recording and playback mode. 10 different voices can be recorded through the recording key, and each recording corresponds to a key on the keyboard. According to the received voice signal, 10 keys can play different voices, which is convenient and flexible to use.

Computer Gaming Accessories

1: Breathable Mobile Game Controller Finger Sleeve Sweat proof Gaming Touch Trigger Screen Gloves For Phone Game

Description	Touch Screen Finger Stall
Liner Material	Polycotton, Polyester, Cotton, Nylon, HPPE, Aramid
Color option	White,Black,Orange, Blue, Grey, Pink, Customized
Logo Print	Washing Label, Silk Screen, Heat Transfer, Customized
Samples	Free Samples, Customized Samples
Sample time	1-3 working days
Delivery time	15 days after receiving deposit

General feature for Touch Screen Finger Stall:

1. Reusable/Washable.
2. Helping minimize skin damage.
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2: Wireless smartphone mobile game controller YAO controller mobile gaming gamepad shoot joystick for I-phone

Product Name	mobile game controller
Feature	Comfortable
Color	White
Compatible	For IOS For Android
Material	ABS
Usage	Play Shooting Games
Connect	Wireless BT
Function	Playing Game
Warranty	1 Year
Packing	Retail box

Computer Gaming Accessories,Wireless Gaming,Mobile Phone Joystick,Sweat-Proof Finger Cover Touch Screen Thumb

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