Docs: Changes to source.android.com

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PiperOrigin-RevId: 220816688
Change-Id: Ifd1ceca1330d6c1f951fa5d7b2da571c95cd212b

1 files changed, 13 insertions, 7 deletions

diff --git a/zh-cn/devices/audio/latency/measure.html b/zh-cn/devices/audio/latency/measure.html
index 4f918e5e..320f7f88 100644
--- a/zh-cn/devices/audio/latency/measure.html
+++ b/zh-cn/devices/audio/latency/measure.html
@@ -63,6 +63,11 @@
 <h3 id="larsenTest">拉尔森测试</h3>
 <p>最简单的延迟测试之一是音频反馈（拉尔森效应）测试。该测试通过测定脉冲响应循环的时间来粗略衡量合并的输出和输入延迟。由于该测试的性质，它本身对于进行详细的分析并不是很有用，但对于校准其他测试以及确定上限来说会比较实用。</p>
 
+  <p>该方法不会分解组件时间，在输出延迟和输入延迟彼此独立的情况下，这一点非常重要。因此，单独测量精确的输出延迟或输入延迟值时，不建议使用该方法，但在确定粗略的估算值时，该方法可能有用。</p>
+
+  <p>设备扬声器的输出延迟可能会明显高于耳机连接器的输出延迟。这是因为扬声器有校正和保护机制。
+  </p>
+
 <p>要进行该测试，请执行以下操作：</p>
 <ol>
   <li>运行从麦克风捕获音频并立即通过扬声器播放捕获的数据的应用。</li>
@@ -70,13 +75,14 @@
   <li>测量反馈脉冲之间的时间间隔，以得出输出延迟、输入延迟和应用开销的总和。</li>
 </ol>
 
-  <p>该方法不会分解组件时间，在输出延迟和输入延迟彼此独立的情况下，这一点非常重要。因此，单独测量精确的输出延迟或输入延迟值时，不建议使用该方法，但在确定粗略的估算值时，该方法可能有用。</p>
-
-  <p>设备上的扬声器的输出延迟可能明显高于耳机连接器的输出延迟。这是因为扬声器有校正和保护机制。
-  </p>
+<p>您可以通过以下资源获取用于执行 Larsen 测试的应用：</p>
 
-<p>我们已经在 <a href="https://android.googlesource.com/platform/frameworks/wilhelm/+/master/tests/examples/slesTestFeedback.cpp">slesTestFeedback.cpp</a> 中发布了一个示例实现。它是一个命令行应用，使用平台构建环境构建而成；但是对其他环境来说，直接采用相关代码也应该很简单。此外您还需要 <code>audio_utils</code> 库中的<a href="avoiding_pi.html#nonBlockingAlgorithms">非阻塞</a> FIFO 代码。
-</p>
+<ul>
+<li>Dr. Rick O'Rang 环回应用是一款用于进行音频反馈测试的 Android 应用。您可以<a href="https://play.google.com/store/apps/details?id=org.drrickorang.loopback">从 Google Play 下载该应用</a>或<a href="https://www.google.com/url?q=https://github.com/gkasten/drrickorang/tree/master/LoopbackApp&sa=D&usg=AFQjCNFT8D7QTkhLdkZSNyvhmoU5yt_zvg">从 GitHub 获取其源代码</a>。
+</li>
+<li>我们还在 <a href="https://android.googlesource.com/platform/frameworks/wilhelm/+/master/tests/examples/slesTestFeedback.cpp">slesTestFeedback.cpp</a> 中发布了一个实现示例。它是一个命令行应用，使用平台构建环境构建而成；但是对其他环境来说，直接采用相关代码也应该很简单。此外您还需要使用 <code>audio_utils</code> 库中的 <a href="avoiding_pi.html#nonBlockingAlgorithms">non-blocking</a> FIFO 代码。
+</li>
+</ul>
 
 <h3 id="loopback">音频环回软件狗</h3>
 
@@ -127,7 +133,7 @@
   <code>systrace</code> 是一款出色的通用工具，用于诊断系统级别性能故障。
 </p>
 
-<p><code>dumpsys media.audio_flinger</code> 的输出中还包含一个称为“simple moving statistics”（简单的移动统计信息）的实用部分，其中包含每个混音和 I/O 周期如何随时间变化的摘要。理想情况下，所有的时间测量值都应该等于平均值或标称周期时间。如果您看到极小的最小值或极大的最大值，则表示存在问题，有可能是调度延迟过高或中断停用时间过长。输出的尾部部分特别有用，因为它突出显示了 +/- 3 标准偏差之外的变化。<i></i>
+<p><code>dumpsys media.audio_flinger</code> 的输出中还包含一个名为“simple moving statistics”（简单的移动统计信息）的部分，这个部分很有用，其中包含反映每个混音和 I/O 周期如何随时间变化的摘要。理想情况下，所有的时间测量值都应该等于平均值或标称周期时间。如果您看到极小的最小值或极大的最大值，则表示存在问题，有可能是调度延迟过高或中断停用时间过长。输出的结尾部分特别有用，因为它会突出显示超过 +/- 3 标准偏差的变化。<i></i>
 </p>
 
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