当您用Apple(Apple) TV度过一个轻松的夜晚时，您最不想看到的就是音频同步问题。不幸的是，视频和音频之间的这种差异是一个常见问题，即使是最精明的技术大师也会感到沮丧。
因此，如果一切感觉就像在观看一部古老的配音功夫(Kung-Fu)电影，那么是时候戴上侦探帽并找出音频设置中似乎存在延迟的原因了。
了解问题
音频(Audio)同步问题或音频延迟最能描述传输到电视或家庭影院系统的音频和视频信号之间的不匹配。或者，换句话说，这是向您呈现的视频和音频的时间差异。因此，您会在屏幕上发生事情之前或之后听到发生的事情。我们并不认为视频和音频是独立的东西，但这种小问题破坏了动态图像的魔力。
当涉及到机顶盒、智能电视(TVs)、各种家庭影院设置以及Netflix、HBO和Amazon Prime等各种流媒体平台时，这种音频不匹配可能会通过多种方式表现出来：
- 声音滞后：音频在视频后面播放一瞬间（或更长时间），使对话和动作感觉脱节。
- 高级声音：与滞后声音相反，其中音频在相应视频之前播放。这种情况不太常见，但同样令人沮丧。
- 故障和爆音：有时，音频同步问题可能会导致奇怪的声音或短暂的故障。当流尝试自我纠正时，就会发生这些伪影。
了解可能导致这些音频延迟问题的原因是解决这些问题的第一步。以下是可能出现问题的情况：
- HDMI 电缆(HDMI Cable)和连接：损坏的电缆或带宽不足的电缆可能会出现故障。在极少数情况下，过长的电缆也会出现同样的情况。
- Apple TV设置(Settings)(tvOS)： tvOS 中的设置(Settings)可能会导致同步问题，尤其是当它们与电视的功能不匹配时。
- Soundbar/Home Theater ConfigurationApple TV 或智能(Smart)电视不适当匹配，可能会导致延迟。
- 流媒体应用程序(Apps)和Wi-Fi：有时，问题不在于硬件，而在于流媒体应用程序或互联网连接。Netflix、Amazon 的(Amazon)故障或Wi-Fi信号较弱可能会对音频同步造成严重破坏。
- 智能电视设置：(Smart)索尼(Sony)或三星(Samsung)等品牌的电视可能具有特定的音频和视频设置，如果配置不正确，可能会导致音频延迟问题。
- 与不同设备的兼容性：将 iPhone 或Mac(Macs)等不同设备与Apple TV 一起使用可能会导致音频同步问题，尤其是在使用无线视频投射时。
- 软件和更新：在(Software)智能(Smart)电视或其他连接的设备上运行过时版本的 tvOS 或软件可能会导致兼容性问题，进而导致音频同步问题。
现在我们了解了Apple TV 音频可能不同步的原因，让我们看看具体的修复方法。
提示：在我们开始之前，请将电视扬声器的音频静音。在许多情况下，您听到的回声是由于这两组扬声器之间的延迟造成的，它们不应该同时播放。除非两个扬声器都在播放，否则这种延迟并不明显。发生这种情况的原因是，由于与电视的直接内部连接，电视扬声器的延迟比外部条形音箱的延迟稍低，我们将其视为回声或混响。
1. 重新启动您的Apple TV 和连接的(Connected)设备
有时，设备会因临时数据或小故障而陷入困境，从而导致音频同步问题。简单的重新启动即可清除RAM，并且通常可以解决音频和视频之间的任何临时问题。重新启动Apple TV、电视、条形音箱或音频链中的任何其他连接的设备。
2. 检查 HDMI 电缆连接
HDMI电缆连接不当或损坏可能会导致信号质量下降。这可能会导致音频延迟问题或更严重的音频/视频同步问题。
确保您的HDMI电缆已牢固插入。尝试使用智能电视上的其他HDMI端口，或者如果电缆已损坏，请更换电缆。
确保您的HDMI电缆满足图像设置的要求也是一个好主意。例如，如果您有 4K 60Hz 电视，则需要使用HDMI 2.0b电缆。由于HDMI电缆向后兼容，因此购买速度更快且有空闲带宽的电缆更好。
在“设置”>“视频和音频”(Audio)下，您可以选择“检查 HDMI(Check HDMI)连接”，让Apple TV 诊断(Apple)HDMI线缆和连接器的运行状况。如果有任何问题，它会自动报告或修复它们。
3. 更新软件
您当前的软件可能与最新的音频格式或流媒体应用程序（例如Netflix(Netflix)和Amazon Prime）不兼容。定期更新将保持一切同步且无故障，确保流畅播放。
虽然您的Apple TV 应用程序应该会自动更新，但您可以在App Store中检查是否有可用更新。这可能是您特别需要某个应用程序帮助的问题。
4. 调整音频设置
不正确的音频设置可能会导致Apple(Apple) TV、智能电视和条形音箱之间出现差异。确保音频格式与所有设备兼容有助于保持音频同步。
- 导航(Navigate)到Settings > Audio和Video > Audio Format。
- 选择更改格式并确认。
- 如果您遇到更奇特的格式（例如Dolby Atmos）的问题，请在“新格式”(New Format)下将格式更改为“立体声”(Stereo)或“PCM” （您可能看不到这两个选项） 。
- 根据需要
调整音频输出设置。(Audio Output)
通常，您的Apple TV 会自动选择正确的音频格式。不过，如果您需要弄清楚此设置，请检查电视手册或制造商网站上的规格表，了解它支持哪些音频格式。
另外，请注意音频链。例如，如果您的Apple TV 连接到其他设备（例如接收器、具有HDMI视频直通功能的条形音箱或HDMI音频提取器），则可能需要更改
Apple TV 上的音频设置才能与特定设备兼容。(Apple)
或者，您可能需要更改链中设备的设置，以确保它们与您喜欢的 Apple TV(Apple)音频输出一致。并非所有家庭影院音频设备都会自动适应插入设备的输出格式。
5. 匹配内容
如果您的ATV与电视的帧速率和动态范围不匹配，可能会导致音频同步问题。通过启用这些选项，您可以确保视频的帧速率和动态范围与电视的功能一致。
在视频设置中启用匹配帧速率(Match Frame Rate)和匹配动态范围，以确保您的(Match Dynamic Range)ATV与电视的功能保持一致。
默认情况下应打开此功能，但如果将其关闭，则可能是为了处理此设置可能导致的问题。例如，笔者的Apple TV 4K 在某些应用程序中每次在 24fps 和 30fps 内容之间切换
时，他的三星 QLED(Samsung QLED)都会黑几秒钟。
6. Wi-Fi 和流媒体应用程序问题
如果您的 Wi-Fi 连接较弱，可能会导致流媒体出现问题，例如音频与视频不同步。通常，可以通过关闭流并重新启动来解决此问题。如果它只发生在一个应用程序中，您应该检查该应用程序是否有可用的更新。
如果 Wi-Fi 信号长期较弱导致问题，您可以查看我们有关解决Wi-Fi 信号较弱的(weak Wi-Fi signals)指南，或者如果您有带以太网端口的(Ethernet)Apple TV ，请考虑使用以太网(Ethernet)端口连接到路由器。
如果您不想在Apple TV 和路由器位置之间铺设以太网(Ethernet)电缆，请考虑使用电力线以太网适配器(Powerline Ethernet adapter)通过家庭电缆路由信号。假设您家的布线相对现代且状况良好，这应该会带来更可靠的数据流。
7. iPhone、iPad 和Mac 连接(Mac Connectivity)
在各种 iOS 设备上使用Airplay时，版本或设置不一致可能会导致音频延迟或其他奇怪的行为。确保所有设备之间的一致性使无缝流式传输更有可能。为此，这里有一些提示：
- 如果您通过 iPhone、iPad 或Mac使用(Mac)Airplay，请更新所有设备。
- 重新启动流媒体应用程序或尝试不同的播放方法。
- 考虑使用电缆适配器（例如Lightning或USB-C转HDMI转换器）绕过Apple TV 直接连接到电视。
- 如果您的电视支持AirPlay，请尝试直接连接到电视而不是Apple TV。
我们发现，除非您的 Wi-Fi 网络出现问题，否则AirPlay 传输(AirPlay)到Apple TV 通常非常稳定，因此如果AirPlay视频出现音频滞后或断断续续的情况，这是排除故障的主要方法。
8. Soundbar 和家庭影院设置(Home Theater Settings)
家庭(Home)影院系统和条形音箱具有独特的设置，与Apple或智能电视(Smart TV)设置不匹配可能会导致音频延迟。调整条形音箱或家庭影院系统上的声音设置，确保它们与Apple TV 的音频设置保持一致。
由于每个条形音箱或家庭影院系统都不同，我们只能为您提供有限的指导。请参阅您的特定设备的用户手册。
特别是，如果您使用蓝牙(Bluetooth)将音频发送到条形音箱或接收器，请在设备上查找音频同步设置并向上或向下调整，直到音频看起来同步。
9.智能(Smart)电视和电视音频(Audio)调整
不同(Different)品牌和型号的智能电视(TVs)具有额外的音频处理功能。不正确的设置可能会导致延迟或其他音频同步问题。调整这些设置以匹配您的Apple TV 有助于确保同步播放。
进入您的三星(Samsung)、索尼(Sony)电视或您正在使用的任何品牌的电视设置并探索音频设置。查找“更改格式”或调整“音频延迟”选项以匹配您的Apple TV。
如果您在玩视频游戏时遇到音频延迟，您可能还需要关闭运动平滑等后处理功能或激活“游戏模式”。游戏(Game)模式可最大限度地减少延迟，从而改善音频延迟以及游戏的视觉响应能力。
10. 召集专业人士
如果所有其他方法均失败，则可能需要联系Apple支持或查阅特定流媒体设备的用户手册。有时，您的设备和Apple TV 之间存在根本的兼容性问题。AV 设备如此之多，这种情况必然会发生，但 AV 专业人士可能很快就会弄清楚。
Apple TV 音频同步问题可能会影响您的观看体验，但通过这些故障排除步骤，您可以解决这些问题。无论是(Whether)享受Netflix狂欢还是在(Netflix)Hulu上观看激动人心的比赛，只要有耐心并进行一些修补，您都可以确保流畅、同步的播放。
How to Fix Apple TV Sound/Audio Delay
When you’ve settled down for a relaxing eνening with your Apple TV, the last thing you want is audio sync issues. Unfortunately, this dispаrity between video and audio is a commоn problem that can frustratе even the savviest tech guru.
So, if everything feels like watching an old dubbed Kung-Fu movie, it’s time to put on your detective cap and track down why there seems to be a delay in your audio setup.
Understanding the Problem
Audio sync issues, or audio delay, can best describe a mismatch between the audio and video signals transmitted to your TV or home theater system. Or, stated differently, it’s a disparity in the timing of the video and audio presented to you. So you’ll hear something happen before or after it happens on-screen. We don’t think of video and audio as separate things, but this hiccup spoils the magic trick of moving pictures.
When it comes to set-top boxes, smart TVs, varied home theater setups, and various streaming platforms like Netflix, HBO, and Amazon Prime, this audio mismatch can rear its ugly head in several ways:
- Lagging Sound: The audio plays a split second (or more) behind the video, making the dialogue and action feel disjointed.
- Advanced Sound: The opposite of lagging sound, where the audio plays before the corresponding video. It’s less common but equally frustrating.
- Glitches and Pops: Sometimes, audio sync issues can lead to strange sounds or momentary glitches. These artifacts happen as the stream tries to correct itself.
Understanding what might cause these audio delay problems is the first step in solving them. Here’s what might be going awry:
- HDMI Cable & Connections: A damaged cable or one without enough bandwidth could be at fault. The same goes for cables that are too long, in rare cases.
- Apple TV Settings (tvOS): Settings in tvOS can cause sync problems, especially if they aren’t matched with the TV’s capabilities.
- Soundbar/Home Theater Configuration: If the soundbar or home theater system’s settings aren’t appropriately matched with the Apple TV or Smart TV, it can cause lag.
- Streaming Apps and Wi-Fi: Sometimes, the problem isn’t with the hardware but the streaming apps or internet connection. Glitches with Netflix, Amazon, or a weak Wi-Fi signal can create havoc with audio sync.
- Smart TV Settings: TVs from brands like Sony or Samsung may have specific audio and video settings that, if not configured correctly, can lead to audio delay issues.
- Compatibility with Different Devices: Using different devices like iPhones or Macs with your Apple TV can lead to audio sync problems, especially if you’re using wireless video casting.
- Software & Updates: Running outdated versions of tvOS or the software on your Smart TV or other connected devices may lead to compatibility issues and, by extension, audio sync issues.
Now that we understand why your Apple TV audio might be out of sync let’s look at specific fixes.
Tip: Before we get into it, mute the audio from your TV’s speakers. In many cases, the echo you hear is thanks to a delay between these two sets of speakers, which should not be playing simultaneously. This delay isn’t noticeable unless both speakers are playing. It happens because the TV’s speakers have slightly less latency than the external sound bar thanks to a direct internal connection to the TV, and we perceive this as echo or reverb.
1. Restart Your Apple TV and Connected Devices
Occasionally, devices get bogged down with temporary data or minor glitches that cause audio sync issues. A simple restart clears the RAM and often resolves any temporary problems between audio and video. Restart your Apple TV, TV, soundbar, or any other connected device in the audio chain.
2. Check the HDMI Cable Connection
An improperly connected or damaged HDMI cable can lead to signal degradation. This might cause audio delay problems or even more severe audio/video sync issues.
Ensure that your HDMI cable is securely plugged in. Try using a different HDMI port on your smart TV or replacing the cable if it’s damaged.
It’s also a good idea to ensure your HDMI cable meets the requirements of your picture settings. For example, if you have a 4K 60Hz TV, you’ll want to use an HDMI 2.0b cable. Since HDMI cables are backward compatible, buying faster ones and having bandwidth to spare is better.
Under Settings >Video and Audio, you can select Check HDMI connection and let your Apple TV diagnose the health of your HDMI cable and connectors. If there are any issues, it will report or fix them automatically.
3. Update Software
Your current software may not be compatible with the latest audio formats or streaming apps like Netflix and Amazon Prime. Regular updates will ensure smooth playback by keeping everything synchronized and glitch-free.
While your Apple TV apps should update automatically, you can check within the App Store if there’s an update available. This is likely the issue of you needing help with one app in particular.
4. Adjust the Audio Settings
Incorrect audio settings can cause discrepancies between your Apple TV, smart TV, and soundbar. Ensuring the audio format is compatible with all devices helps maintain audio sync.
- Navigate to Settings > Audio and Video > Audio Format.
- Select Change Format and confirm.
- Under New Format, change the format to Stereo or PCM (you may not see both options) if you’re experiencing issues with more exotic formats, such as Dolby Atmos.
- Adjust the Audio Output settings as needed.
Usually, your Apple TV will choose the correct audio format automatically. Still, if you need to figure out this setting, check your TV’s manual or the specification sheet on the manufacturer’s website to see which audio formats it supports.
Also, be mindful of the audio chain. For example, If your Apple TV is connected to another device (e.g., a receiver, soundbar with HDMI video passthrough, or an HDMI audio extractor), the audio settings on your Apple TV might have to be changed to be compatible with specific devices.
Alternatively, you may have to change settings on the devices in the chain to ensure they are consistent with the audio output you prefer from the Apple TV. Not all home theater audio gear will automatically adapt to the output format of the device plugged into it.
5. Match Content
If your ATV doesn’t match your TV’s frame rate and dynamic range, it can lead to audio sync problems. By enabling these options, you ensure that the video’s frame rate and dynamic range are aligned with your TV’s capabilities.
Enable Match Frame Rate and Match Dynamic Range in the video settings to ensure your ATV is aligned with the TV’s capabilities.
This should be on by default, but if it’s been turned off, it may have been to deal with problems that this setting can cause. For example, this author has experienced his Samsung QLED going black for a few seconds every time his Apple TV 4K switched between 24fps and 30fps content in certain apps.
6. Wi-Fi and Streaming App Troubles
If your Wi-Fi connection is weak, it can cause problems with your stream, such as desynchronizing the audio from the video. Usually, this is solved by closing the stream and restarting it. If it only happens in one app, you should check if updates are available for that app.
If a chronically weak Wi-Fi causes the problem, you can check out our guides on addressing weak Wi-Fi signals, or if you have an Apple TV with an Ethernet port, consider using the Ethernet port to connect to your router.
If you don’t want to lay an Ethernet cable from your Apple TV to your router’s location, consider using a Powerline Ethernet adapter to route the signal through your home’s electrical cabling. Assuming that your home’s cabling is relatively modern and in good condition, this should lead to a much more reliable data stream.
7. iPhone, iPad, and Mac Connectivity
When using Airplay with various iOS devices, inconsistencies in versions or settings can lead to audio delay or other weird behavior. Ensuring consistency across all devices makes seamless streaming more likely. To that end, here are some tips:
- If you’re using Airplay from an iPhone, iPad, or Mac, update all devices.
- Restart the streaming app or try a different playback method.
- Consider using a cable adapter, such as a Lightning or USB-C to HDMI dongle, to connect directly to your TV, bypassing the Apple TV.
- If your TV supports AirPlay, try connecting to the TV directly rather than your Apple TV.
We’ve found that AirPlay to an Apple TV is usually rock-solid unless something’s amiss with your Wi-Fi network, so this is the main thing to troubleshoot if AirPlay video has lagging or stuttering audio.
8. Soundbar and Home Theater Settings
Home theater systems and soundbars have unique settings, and mismatches with your Apple or Smart TV settings can cause audio delays. Adjust the sound settings on your soundbar or home theater system to ensure they align with your Apple TV’s audio settings.
Since every soundbar or home theater system differs, we can only give you limited guidance. Consult the user manual for your particular device.
In particular, if you’re using Bluetooth to send audio to your soundbar or receiver, look for an audio sync setting on the device and adjust it up or down until the audio seems to be in sync.
9. Smart TV and TV Audio Adjustments
Different brands and models of smart TVs have additional audio processing capabilities. Incorrect settings can cause delays or other audio sync problems. Adjusting these settings to match your Apple TV helps ensure synchronized playback.
Go into your Samsung, Sony TV, or whichever brand you are using’s TV settings and explore the audio settings. Look for ‘Change Format’ or tweak the ‘Audio Delay’ options to match your Apple TV.
You may also want to turn off post-processing features such as motion smoothing or activate “game mode” if you’re experiencing audio delay while playing video games. Game modes minimize latency, which can improve audio delay as well as the visual responsiveness of the game.
10. Call in the Professionals
If all else fails, it might be time to contact Apple support or consult the user manual of your specific streaming devices. Sometimes, fundamental compatibility issues exist between your equipment and the Apple TV. There’s so much AV equipment out there that it’s bound to happen, but an AV pro will likely figure it out quickly.
Apple TV audio sync problems can damper your viewing experience, but with these troubleshooting steps, you can solve them. Whether enjoying a Netflix binge or a thrilling match on Hulu, you can ensure smooth, synchronized playback with patience and some tinkering.
