# Using audio during meetings The topics in this section explain how to use audio during an Amazon Chime meeting. You can talk with other attendees, and listen to what they say. **Note** Amazon Chime prioritizes audio over video if your network connection slows down. The system pauses all video except your video tile and the screen share, and the following error message appears: **Video paused to prioritize your audio connection**. Once your network connection improves, Amazon Chime resumes playing any paused video share tiles. **Topics** + [ # Changing audio devices during a meeting ](use-audio-menu.md) + [ # Muting and unmuting ](chime-mute.md) + [ # Running the device troubleshooters ](run-troubleshooters.md) + [ # Using other audio features ](use-other-audio-features.md) + [ # Using Amazon Voice Focus ](voice-focus.md) + [ # Switching from VoIP to dial-in ](dial-switch.md) # Changing audio devices during a meeting After you join an Amazon Chime meeting, you can change to a different microphone or different speakers if you have them available. You can switch between an internal microphone and a headset or other external microphone, or between an internal speaker and headphones or other external speakers. **To change audio devices** 1. Choose the **Audio menu** icon located next to the microphone icon (![\[Icon of a microphone and caret symbol.\]](http://docs.aws.amazon.com/chime/latest/ug/images/icon-mic-caret.png)). 1. Under **Speakers**, choose any available device. # Muting and unmuting Muting and unmuting The following sections explain how to mute and unmute audio during an Amazon Chime meeting. The steps apply to the desktop client and web app. For information about muting audio with the mobile app, see [Muting and unmuting your audio](mobile-meeting-mute-audio.md), later in this guide. Expand each section to learn more. ## Muting and unmuting your audio You can mute and unmute your audio at any time during an Amazon Chime meeting. **To mute or unmute your audio in the desktop client and web app** + Select the **Mute mic** icon at the bottom of the meeting window. ![\[A blue circle with a microphone.\]](http://docs.aws.amazon.com/chime/latest/ug/images/icon-mute-mic.png) To unmute yourself, select the icon again. ## Muting and unmuting other attendees If you sign in to your Amazon Chime account before you join the meeting, you can mute and unmute other attendees, including those who the join from mobile devices or in-room conference systems. **To mute or unmute other attendees** + On the meeting roster, open the ellipsis menu ( **…** ) next to the attendee's name and choose **Mute** or **Unmute**. ## Muting and unmuting with in-room systems If you join a meeting from an in-room conference system, the mute button on your device overrides any unmute requests from Amazon Chime. **To mute and unmute** + If your device has a mute button, press it. —or— On your device's keypad, press **\$17**. ## Preventing attendees from unmuting You must be a meeting host, delegate, and moderator to complete these steps. Also, you must first sign in to the Amazon Chime app. **To prevent attendees from unmuting** 1. In the left control bar, open the **More options** menu (![\[An icon showing a horizontal ellipsis.\]](http://docs.aws.amazon.com/chime/latest/ug/images/left-control-6.png)). 1. Choose **Prevent attendees from unmuting**. # Running the device troubleshooters Running the troubleshooters During a meeting, if you have trouble with a mic, speakers, or a Bluetooth connection, you can start the Microsoft Windows troubleshooters for those items. You can use the troubleshooters without leaving the meeting. **Note** These steps only apply to Windows devices. **To start a troubleshooter** 1. Choose the **Audio menu** icon, located next to the microphone icon (![\[Icon of a microphone and caret symbol.\]](http://docs.aws.amazon.com/chime/latest/ug/images/icon-mic-caret.png)). 1. Under **Device Assistance**, choose the desired troubleshooter. 1. Follow the steps in the troubleshooter. **Note** If the troubleshooter fails to resolve your problem, contact your system administrator. # Using other audio features You can use the **Audio** menu to start and stop a number of meeting features. The following steps menu item.To use the meeting features 1. Choose **Audio menu** menu, the caret (**^**) next to the microphone icon. 1. Choose the feature or features that you want to turn on or off. A checkmark appears next to features that you turn on. Available features: + **Voice Focus (noise suppression)** – Reduces unwanted background noises. For more information about using it, see [Using Amazon Voice Focus](voice-focus.md). + **Auto-adjust audio levels** – Automatically adjusts audio levels to keep your voice at an audible, comfortable volume. + **Auto-detect microphone problems** – Detects any problems with your microphone and notifies you if your microphone isn't picking up audio. + **Mute detection** – Displays a notification when you try to talk on a muted mic. + **Push-to-talk (Spacebar)** – Allows you to press and hold the spacebar to unmute your microphone. Release the spacebar to mute your microphone. + **Switch to dial-in** – Starts a dialog box that allows you to choose a phone number and dial in to a meeting. As a best practice, you should dial in to meetings hosted in conference rooms, or when you don't have a stable network connection. For more information, see [Switching from VoIP to dial-in](dial-switch.md). + **Disable mic and speakers** – Turns off your microphone and stops playing meeting audio through your speakers. # Using Amazon Voice Focus Amazon Voice Focus reduces the sound levels of noises that can intrude on a meeting, such as: + **Environment noises** – Wind, fans, running water + **Background noises** – Lawnmowers, barking dogs + **Foreground noises** – Typing, papers shuffling **Note** Amazon Voice Focus doesn't eliminate those types of noises. Instead, it makes them less audible. To ensure privacy during a meeting, use the **Mute** button to silence yourself or others. By default, Amazon Chime uses Amazon Voice Focus for the desktop and mobile clients. When turned on, a checkmark appears next to the **Voice Focus (noise suppression)** option on the **Audio** menu. Amazon Voice Focus processes your voice; however, it never records you, or uses what you say to train itself. You can turn Amazon Voice Focus off at any time during a meeting. For example, you might turn it off if: + You're in a conference room, and you want remote attendees to hear the conversation between the other people in the room. + You want other attendees to hear your ambient noise, such as music playing before the start of a presentation. **To turn off Amazon Voice Focus in the desktop client** 1. In the meeting window, choose **More**. 1. Choose **Voice Focus (noise suppression)** to clear the check mark. Repeat those steps to turn Amazon Voice Focus on again. **Note** Amazon Voice Focus requires a device that meets the following requirements: Windows 8.1 and later on computers running at least 4th generation Intel processors, or the AMD equivalent macOS machines from 2007 and later Android version 4.5 and later iOS version 10.0 and later # Switching from VoIP to dial-in Switching to dial-in When attending Amazon Chime meetings, you can switch from VoIP to dial-in at any time. You typically switch when you join from a conference room, or when you have a poor network connection. ## Switching to dial-in with the Amazon Chime desktop client If you want to switch to a dial-in connection to a meeting, you can do so in the Amazon Chime desktop client. **To switch to dial-in using the desktop client** 1. Choose **Audio menu**, then **Change audio**, then choose **Switch to dial-in**. 1. Use the dial-in number shown or select an international number. 1. Enter the **Meeting ID** followed by the \$1 key when prompted. The Amazon Chime desktop client also prompts you to switch to dial-in if your internet connection is poor. When prompted, dial the number shown to rejoin the meeting.