對於D類放大一些疑惑的問題 - 喇叭音響
By Gilbert
at 2022-02-04T00:17
at 2022-02-04T00:17
Table of Contents
板上各位30cm跟G cup大家好
最近在研究D類放大模組還有一些dsp訊號處理相關的產品
關於D類放大模組
大致上是使用開關mos來調整輸出大小的方式來產生弦波
所輸出的聲音訊號上會有開關所產生的高頻noise
可是通常開關的切換頻率幾乎都在600khz以上
而它產生的高頻noise人耳基本上都聽不到
那為何還要在輸出端加上LC Filter呢?
假如直接把Filter拔掉真的會對聲音有影響嗎?
感謝各位大大 因為研究所念的是電波相關
對這方面不是懂得太多
希望各位大大賜教
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