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当通过语音优先界面进行控制时，播客甚至更好。 (Podcasts are even better when controlled by a voice-first interface.)

Every month, 67 million Americans listen to podcasts, with the average podcast fan listening to 5 shows per week.

每月，有6700万美国人收听播客，平均每个播客迷每周收听5个节目。

Audio podcasts are popular for good reason. Within a 30 minute span of the average podcast, a listener can be inspired and educated by influential content — without interference from screens.

音频播客之所以受欢迎是有原因的。 在平均播客的30分钟内，可以从有影响力的内容中激发和教育听众-不受屏幕干扰。

While listening to an episode, you can catch-up on emails, exercise, commute, or relax on the deck. The pure auditory experience of a podcast frees your other senses—offering listeners an opportunity to multi-task.

在收听剧集时，您可以在甲板上收听电子邮件，锻炼，通勤或放松。 播客的纯听觉体验释放了您的其他感官，使听众有机会执行多项任务。

In a recent article, Forbes highlighted screen exhaustion as one of the key contributors to the rise of podcast popularity driving the 11 percent growth in listeners over the past year.

在最近的一篇文章中，《福布斯》强调屏幕疲劳是导致播客受欢迎程度上升的关键因素之一，在过去一年中，播客的流行推动了听众的11％增长。

“Exciting at first, screens have become exhausting for many users, and podcasts represent a refreshing alternative. Rather than using your eyes, you use your ears; there are silences, pauses, and genuine human voices rather than words and images on a screen.”

“最初令人兴奋的是，屏幕已经对许多用户而言已经筋疲力尽，播客代表了一种令人耳目一新的选择。 而不是用眼睛，而是用耳朵。 那里是沉默，停顿和真实的人声，而不是屏幕上的文字和图像。”

Unfortunately, the full benefits of a podcast experience are often cut-short by the friction of graphical interfaces. To consume the auditory content, a listener must click controls and navigate screens on their devices.

不幸的是，播客体验的全部好处常常由于图形界面的摩擦而被削弱。 要使用听觉内容，听众必须单击控件并在其设备上导航屏幕。

Podcasts are best served without a screen — using a voice-first interface to control the experience that eliminates the interference and exhaustion. Rather than navigating screens to find past episodes, control playback, or adjust the volume — just ask Alexa.

最好在没有屏幕的情况下播客-使用语音优先界面来控制消除干扰和疲惫的体验。 而不是浏览屏幕来查找过去的情节，控制播放或调节音量，只需询问Alexa即可 。

Alexa, play The Cloudcast.

Alexa，播放Cloudcast。

Alexa, skip ahead.

Alexa，快跳。

This is precisely why so many top podcasts are creating custom skills designed specifically for Alexa. By simply asking Alexa, listeners can now digest of 325 podcasts streamed from popular shows such as NPR or TED Talks.

这就是为什么这么多顶级播客创建专门为Alexa设计的自定义技能的原因。 通过简单地询问Alexa，收听者现在就可以摘录从NPR或TED演讲等热门节目中获得的325个播客。

And now, tech savvy listeners can enjoy an award winning podcast on all things cloud computing. Since 2011, Aaron Delp and Brian Gracely have produced over 300 episodes of The Cloudcast from their studios in Raleigh, North Carolina — amassing an astonishing 1M listens run-rate in 2017.

现在，精通技术的听众可以在云计算的所有内容上享受屡获殊荣的播客。 自2011年以来，亚伦·德尔普(Aaron Delp)和布莱恩·格蕾斯利(Brian Gracely)从北卡罗来纳州罗利市的工作室制作了超过300集的The Cloudcast-在2017年获得了惊人的100万听歌率。

那么，在Alexa上发布播客又需要什么呢？ (So what does it take to publish a podcast on Alexa?)

A common place to start is one of the several podcast templates available for developers on github — all of which use Amazon’s AudioPlayer Interface. Many of the templates require that each episode is manually uploaded to an S3 bucket, while other templates rely on a podcast’s RSS feed.

一个常见的起点是github上可供开发人员使用的几种播客模板之一，它们全部使用Amazon的AudioPlayer Interface 。 许多模板要求将每个剧集手动上传到S3存储桶，而其他模板则依赖播客的RSS feed。

To develop a high quality podcast skill for The Cloudcast, we partnered with a new startup that specializes in Alexa podcasts — Fourthcast. Our team learned about their unique Podcast as a Service from an article about lessons using AWS Lambda to host Alexa skills.

为了开发The Cloudcast的高质量播客技能，我们与一家专门从事Alexa播客的初创公司合作-Thirdcast 。 我们的团队从一篇有关使用AWS Lambda托管Alexa技能的课程的文章中了解了其独特的Podcast即服务的知识。

While partnering with Fourthcast, we had a chance to explore what it takes to develop a hosting solution for an Alexa podcast skill that delivers a million listens. Here’s a few of the insights from our experience.

与Fourcast合作时，我们有机会探索了开发可提供百万听众的Alexa播客技能的托管解决方案所需的资源。 以下是我们经验中的一些见解。

播客是移动的目标。 (Podcasts are moving targets.)

As new episodes are published, a skill needs to automatically detect updates so it’s immediately available to listeners. For The Cloudcast skill, a distinct Lambda function is used to frequently check the availability of new episodes. The results of the function are cached in S3 — where a separate Lambda function examines the status. This approach ensures we’ve always got the latest episodes available to listeners.

随着新剧集的发布，需要一种技能来自动检测更新，以便听众可以立即使用。 对于Cloudcast技能，独特的Lambda函数用于频繁检查新剧集的可用性。 函数的结果存储在S3中-在其中，一个单独的Lambda函数将检查状态。 这种方法可确保我们始终向听众提供最新的剧集。

性能 (Performance)

To avoid latency issues with streaming audio, listeners often rely on a podcatcher app — such as the Apple iTunes client. These apps are used to subscribe to podcasts and automatically download new episodes for local storage and playback.

为了避免流音频的延迟问题，听众通常会使用Podcatcher应用程序(例如Apple iTunes客户端)。 这些应用程序用于订阅播客并自动下载新剧集以进行本地存储和播放。

Unlike traditional devices, an Amazon Echo doesn’t have the capability to locally cache episodes — relying exclusively on real-time streaming. As a result, the quality of an Alexa podcast stream to an Echo device is heavily dependent on the quality of the hosting solution.

与传统设备不同，Amazon Echo无法在本地缓存剧集，而只能依靠实时流。 结果，到Echo设备的Alexa播客流的质量在很大程度上取决于托管解决方案的质量。

For many podcasts, their current hosting solution just isn’t fast enough to support Alexa’s real-time streaming requirements. In these cases, Fourthcast uses an S3 bucket as the podcatcher to download and cache the current content. To improve the streaming performance of large MP3 files, the recordings are automatically re-encoded to smaller streaming quality files using Elastic Transcoder.

对于许多播客来说，他们当前的托管解决方案还不够快，无法满足Alexa的实时流需求。 在这些情况下，Fourthcast使用S3存储桶作为Podcatcher，以下载和缓存当前内容。 为了提高大型MP3文件的流传输性能，使用Elastic Transcoder将记录自动重新编码为较小的流传输质量文件。

HTTPS协议 (The HTTPS Protocol)

Most podcast RSS feeds use an HTTP URL to reference an episode — whereas Alexa podcast skills require using HTTPS. Fortunately, the majority of podcast services support HTTPS — which means you can get away with simply modifying the referenced URL to the HTTPS protocol.

大多数播客RSS提要使用HTTP URL来引用剧集，而Alexa播客技能则需要使用HTTPS。 幸运的是，大多数播客服务都支持HTTPS-这意味着您只需将引用的URL修改为HTTPS协议就可以摆脱困境。

In the few cases where this doesn’t work, simply create a CloudFront proxy that uses HTTPS on the requesting side and HTTP on the origin side.

在少数情况下，此操作不起作用，只需创建一个CloudFront代理，该代理在请求方使用HTTPS，在源方使用HTTP。

数据库 (A Database)

Any podcast skill worth its salt is going to need a database. This is essential for a couple of key reasons — tracking the user’s progress 1) across episodes and 2) within episodes. By using a database, a podcast session can be resumed at the precise spot of an unfinished episode. DynamoDB is the natural choice for this job — due to it’s low-latency connection to Lambda.

任何值得一提的播客技能都需要一个数据库 。 出于以下两个关键原因，这是至关重要的-跟踪用户的进度1) 跨情节和2)情节内。 通过使用数据库，播客会话可以在未完成情节的确切位置处恢复。 DynamoDB是这项工作的自然选择-由于它与Lambda的连接延迟低。

Pulling all these elements together results in an higher-quality podcasting experience — and with new features like the Notifications API, we can’t wait to integrate more elements that’ll make podcasts on Alexa even better.

将所有这些元素组合在一起可带来更高质量的播客体验-借助Notifications API等新功能，我们迫不及待地想要集成更多元素，从而使Alexa上的播客变得更好。

The Cloudcast, presented by A Cloud GuruAn award winning podcast on cloud computing, presented by A Cloud Guru.acloud.guru

由A Cloud Guru呈现的Cloudcast由A Cloud Guru呈现 的屡获殊荣的云计算播客。 acloud.guru

Now that you learned what it takes to bring a podcast to life on Alexa, we hope you enjoy the latest episode of A Cloud Guru Presents The Cloudcast!

既然您已经了解了如何在Alexa上实现播客的功能，我们希望您喜欢A Cloud Guru Presents The Cloudcast的最新一集！

翻译自: https://www.freecodecamp.org/news/how-we-brought-an-award-winning-tech-podcast-to-life-on-alexa-and-what-we-learned-along-the-way-201ab40dda28/

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