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基于PIC单片机的ADPCM编解码
资料介绍
Table 4 shows the performance comparison of the ADPCM compression and decompression routines for the PIC16C5X PIC16CXXX. and PIC17CXXX family of devices assuming 80 additional instruction cycles for overhead. Any device with-
out a PWM module will have to increase the operating frequency to generate a software PWM. Table 4 also provides the minimum external operating frequency required to run the routines. The C code from Appendix C was used. The inputloutput data rate of the speech samples is 8.0 kHz. The minimum operating frequency is calculated as follows.
8000 x # of Total Instruction Cycles x4.
For example, the ADPCM encoding using the PIC16CXXX family would require an 8000 x (225 +80) x4-9.760 MHa external crystal
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| 文件名 | 大小 |
| 基于PIC单片机的ADPCM编解码.pdf | 2M |
全部评论(1)
2022-09-02 00:45:09Go1
好