31-08-2017, 11:05 AM
APR9600 is a high-performance low-cost / repeatable IC sound record that incorporates the analog flash storage technique. The recorded sound is retained even after the power supply has been removed from the module. The reproduced sound exhibits high quality with a low noise level. The sampling frequency for a 60 second recording period is 4.2 kHz, which provides a recording / repeating sound bandwidth from 20Hz to 2.1kHz. However, by changing an oscillation resistance, a sampling rate as high as 8.0 kHz can be achieved. This reduces the total duration of sound recording to 32 seconds. The total sound recording time can be varied from 32 seconds to 60 seconds by changing the value of a single resistor. The IC can operate in one of two modes: serial mode and parallel mode. In serial access mode, the sound can be recorded in 256 sections. In parallel access mode, the sound can be recorded in 2, 4 or 8 sections. The IC can simply be controlled using the button keys. It is also possible to control the IC using external digital circuits such as microcontrollers and computers. The APR9600 has a 28-pin DIP packet. The voltage of the source is between 4.5V to 6.5V. During recording and repetition, the current consumption is 25 mA. In idle mode, the current drops to 1 mA. The APR9600 Experimental Board is a assembled PCB board consisting of an APR9600 IC, an electret microphone, support components and switches necessary to enable users to explore all the functions of the APR9600 chip. The oscillation resistor is chosen so that the total recording period is 60 seconds with a sampling frequency of 4.2 kHz. The board measures 80mm by 55mm.