<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[运行MPP自带的音频ai和ao示例报错，提示PlaybackRateDmix和Capture1Mic配置错误]]></title><description><![CDATA[<p dir="auto">运行MPP中的音频示例程序sample_ai报错，提示信息为：</p>
<pre><code>ALSA lib pcm.c:2501:(snd_pcm_open_noupdate) Unknown PCM Capture1Mic:16000
E0101 15:57:02.110755  1269 alsa_interface.c:483]           &lt;alsaOpenPcm&gt; fatal error! card[Capture1Mic:16000] audio open error: No such file or directory
E0101 15:57:02.110882  1269 audio_hw.c:1432]                &lt;audioHw_AI_Enable&gt; fatal error! open_pcm failed
I0101 15:57:02.110990  1269 alsa_interface.c:471]           &lt;alsaOpenPcm&gt; open pcm! card:[Capture1Mic:16000], pcmFlag:[0](0-cap;1-play)
ALSA lib pcm.c:2501:(snd_pcm_open_noupdate) Unknown PCM Capture1Mic:16000

</code></pre>
<p dir="auto">如下图所示：<br />
<img src="/assets/uploads/files/1710993132479-0267b734-b582-4b2c-8a82-a4d1a7d3c032-image-resized.png" alt="0267b734-b582-4b2c-8a82-a4d1a7d3c032-image.png" class=" img-responsive img-markdown" /></p>
<p dir="auto">运行MPP中的音频示例程序sample_ao报错，提示信息为：</p>
<pre><code>I0101 15:59:09.264578  1311 alsa_interface.c:471]           &lt;alsaOpenPcm&gt; open pcm! card:[PlaybackRateDmix:16000,1,960], pcmFlag:[1](0-cap;1-play)
ALSA lib conf.c:5000:(snd_config_expand) Unknown parameters 16000,1,960
ALSA lib pcm.c:2501:(snd_pcm_open_noupdate) Unknown PCM PlaybackRateDmix:16000,1,960
E0101 15:59:09.268046  1311 alsa_interface.c:483]           &lt;alsaOpenPcm&gt; fatal error! card[PlaybackRateDmix:16000,1,960] audio open error: Invalid argument
E0101 15:59:09.268303  1311 audio_hw.c:2281]                &lt;audioHw_AO_EnableChn&gt; fatal error! open_pcm failed
I0101 15:59:09.268453  1311 AOChannel_Component.c:1663]     &lt;AOChannel_ComponentThread&gt; audio render hal init and run ok:0!
E0101 15:59:09.268616  1311 glog_helper.cpp:16] *** Aborted at 57549 (unix time) try "date -d @57549" if you are using GNU date ***
E0101 15:59:09.269147  1311 glog_helper.cpp:16] PC: @        0x0 (unknown)
Arithmetic exception (core dumped)
</code></pre>
<p dir="auto"><img src="/assets/uploads/files/1710993218217-204d6574-0339-4ba7-af82-196056a7c37d-image-resized.png" alt="204d6574-0339-4ba7-af82-196056a7c37d-image.png" class=" img-responsive img-markdown" /></p>
<p dir="auto">目前，扬声器和拾音MIC都可正常播放声音和拾音，但是运行音频相关的示例就是会提示这两个问题。有没有大佬能提供一下思路？</p>
]]></description><link>https://bbs.aw-ol.com/topic/5205/运行mpp自带的音频ai和ao示例报错-提示playbackratedmix和capture1mic配置错误</link><generator>RSS for Node</generator><lastBuildDate>Sun, 17 May 2026 15:19:53 GMT</lastBuildDate><atom:link href="https://bbs.aw-ol.com/topic/5205.rss" rel="self" type="application/rss+xml"/><pubDate>Thu, 21 Mar 2024 03:56:54 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to 运行MPP自带的音频ai和ao示例报错，提示PlaybackRateDmix和Capture1Mic配置错误 on Thu, 21 Mar 2024 08:23:34 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://bbs.aw-ol.com/uid/1877">@null037</a> 解决办法：修改打开设备</p>
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