Hi,
您好!
抱歉回复晚了,请问您的问题解决了吗?因为我们手头没有对讲机环境,无法重现您所说的问题,所以无法确认噪音产生的原因。如果您确定是无线干扰,一般的解决思路,因为当前ADC是单端设计,可以尝试采用伪差分的设计去除干扰。具体做法可尝试把讲机SPK系统的共模电压输给另一路ADC,然后两路ADC采集的信号相减去除干扰。
希望这个建议能对你有所帮助,如果还有问题再讨论。
谢谢!
Search found 3 matches
- Tue Mar 09, 2021 12:07 pm
- Forum: ESP-ADF 中文讨论版
- Topic: 请教关于ADC干扰的问题
- Replies: 6
- Views: 11062
- Fri Feb 19, 2021 9:15 am
- Forum: ESP-ADF 中文讨论版
- Topic: 请教关于ADC干扰的问题
- Replies: 6
- Views: 11062
Re: 请教关于ADC干扰的问题
Hi,
您好!
关于您提到的ADC干扰问题,能否提供一下这部分硬件电路的原理图及录音文件?
谢谢!
您好!
关于您提到的ADC干扰问题,能否提供一下这部分硬件电路的原理图及录音文件?
谢谢!
- Thu Mar 07, 2019 8:13 am
- Forum: ESP-ADF
- Topic: The ESP32 LYRAT V4.3 board has poor sound quality. SNR only 26 dB
- Replies: 4
- Views: 10457
Re: The ESP32 LYRAT V4.3 board has poor sound quality. SNR only 26 dB
Hi,
Thanks for your feedback, we double check the board, it seems there is some mistake of the speaker PA output, it has saturation distortion at the max volume, it cause the SNR fail, we will update the audio parameter soon to solve this issue.
Thank you
Thanks for your feedback, we double check the board, it seems there is some mistake of the speaker PA output, it has saturation distortion at the max volume, it cause the SNR fail, we will update the audio parameter soon to solve this issue.
Thank you