單片機實現ADPCM編碼和解碼 - 免費下載
技術資料資源
文件大?。?753 K
?? 資源詳細信息
?? 溫馨提示：本資源由用戶 zhengtiantong 上傳分享，僅供學習交流使用。如有侵權，請聯系我們刪除。
資源簡介
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.
立即下載此資源
提示：下載后請用壓縮軟件解壓，推薦使用 WinRAR 或 7-Zip
資源說明
下載說明
- 下載需消耗 2積分
- 24小時內重復下載不扣分
- 支持斷點續傳
- 資源永久有效
使用說明
- 下載后用解壓軟件解壓
- 推薦 WinRAR 或 7-Zip
- 如有密碼請查看說明
- 解壓后即可使用
積分獲取
- 上傳資源獲得積分
- 每日簽到免費領取
- 邀請好友注冊獎勵
- 查看詳情 →