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常见问题
[FAQ] 【分享】音频CODEC和ADC:常见噪声问题
Annie Liu
在一个系统中产生噪音的原因有很多,下面列出了最常见的原因(不按特定顺序排列): 1、带外噪声 2、PLL配置不正确 3、ASI(音频串行接口)配置不正确 4、地平面噪声耦合 5、电源 带外噪声是一个非常常见的问题,通常不考虑。带外噪声是由CODEC/ADC内的数字切换产生的高频噪声。当将模拟输出连接到D类放大器时,这种噪声会被混叠到音频频带并影响输出。带外噪声可以通过在模拟输出端增加一个截止频率约为30khz的低通滤波器来解决。 在CODEC/ADC中错误地配置PLL和ASI也会导致噪声问题。PLL和ASI总线都提供了以多种方式配置的能力…
Answered
over 3 years ago
音频
音频论坛
[FAQ] 【信号链分享】常见问题解答(持续更新中, 更新至10/28/2021)
Annie Liu
【信号链分享】常见问题解答(持续更新中, 更新至10/28/2021) 8640.常见问题解答-Signal Chain 2021.docx 【信号链分享】常见问题解答 -2020 3007.常见问题解答-Signal Chain 2020.docx
已回答
3 年多前
音频
音频论坛
[FAQ] PCM2912A:未使用的引脚的处理方法
Annie Liu
Other Parts Discussed in Thread: PCM2912A Q: 如果PCM2912A的headphone output不使用的话,那么相应的不用的引脚改如何处理呢? 下面这个表格总结了这些不用的引脚应该怎么接: A:
Answered
over 4 years ago
音频
音频论坛
[FAQ] 使用Purepath的讲解视频
Annie Liu
TLV320AICxx系列CODECs和其他audio ADCs经常会使用到Purepath Studio software, 那么第一次使用这个软件时,可能我们还不太熟悉,建议参考下面这三个关于purepath 的培训视频,相对对大家都有所帮助: http://www.ti.com/litv/wmv/slac323 http://www.ti.com/lit/wmv/slac325 http://www.ti.com/lit/wmv/slac327
Answered
over 4 years ago
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