The coding flow including analog audio signal sampling and PCM coding using CODEC, MP3 coding of digital audio signal using DSP, MP3 compressed data frame transmission to personal computer (PC) using Peripheral Component Interconnect (PCI) bus.
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美
- 它的主要工作流程為:先用音頻編解碼器對音頻信號進(jìn)行采樣得到數字音頻信號,然后用DSP對數字音頻信號進(jìn)行MP3壓縮編碼并送入雙口RAM,最后通過(guò)PCI總線(xiàn)將壓縮編碼后的MP3數據幀實(shí)時(shí)傳送給PC機。