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单片机实现ADPCM编码和解码

INTRODUCTION In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation(ADPCM) algorithm, these audio capabilities can be added to any PICmicro device. This application note will cover the ADPCM compression and decompression algorithms, performance comparison of all PICmicro devices, and an application using a PIC16C72 micro-controller.DEFINITION OF TERMS step size -value of the step used for quantization of ana-log signals and inverse quantization of a number of steps.quantization -the digital form of an analog input signal is represented by a finite number of steps.adaptive quantization -the step size of a quantizer is dramatically changed with time in order to adapt to a changing input signal.inverse quantizer -a finite number of steps is converted into a digital representation of an analog signal.

标签： 单片机 adpcm 编码解码

上传时间： 2022-06-20

上传用户：
SEGGER J-FlASH ARM(jlink驱动)_V4.08_免费版

1:打开J-Flash ARM后,首先点击File-OpenProject...,从中选择STM32F103RB.jflash。(例子芯片,直接在提示的目录下找) 2.点击File-Open data file...选择要烧录的可执行文件(.hex 或者 .bin) 3:options-project settings 在里面配置cpu型号,下载方式 4: 选择烧录文件后,点击Target-connect,链接一下硬件是否通。如果能够连接成功会了log窗口最后一行显示“Connected successfully”。5:按F3擦除芯片。6.按F5键将程序写入芯片。7.硬件链接上之后，点击Target-Secure chip防止程序被恶意读出。如果您的芯片用于调试，不要执行本步骤。

标签： J-Flash

上传时间： 2022-06-22

上传用户：kingwide
UDP_TESTER.RAR

是一个可以在窗口测试与进一步分析数据的软件，可以正确的分析你的数据并以log显示出来，也可让你将所分析的数据log信息以Email传送给专家，专家将对你的数据log进行评估并Email给你。

标签： 电磁铁设计手册

上传时间： 2013-04-15

上传用户：eeworm