How To Record Screen On iPhone

IOS Screen Recording

Starting with iOS 11, iPhone and iPad have a built-in function for screen recording. However, a novice owner of an Apple device may not even notice it.

To enable the function, use the following steps (remember, you must have installed iOS version NOT lower than 11).

  • Go to settings and open the “Control Center”.
  • Click “Customize Controls”.
  • Pay attention to the list of ” controls”, there you will see the item “Screen recording”. Click the plus sign to the left of it.
  • After exiting the settings (press the “Home” button) and pull the bottom of the screen: in the control point you will see a new button for screen recording.

By default, pressing the screen recording button starts recording the screen of the device without sound. However, if you use a strong press (or long press on iPhone and iPad without Force Touch support), a menu will open like in the screenshot, in which you can enable sound recording from the device’s microphone.

After the end of the recording (performed by pressing the record button again), the file is saved in.MP4 format, 50 frames per second and stereo sound (at least on my iPhone this is the case).

Below is an instruction on using the function, if something remains incomprehensible after reading this method.

3 Ways to Record from iPhone and iPad Screen

If you need to record from the screen of your iOS device, you can do this in several ways. over, one of them, recording from the iPhone and iPad screen (including with sound) on the device itself (without the need to use third-party programs) appeared quite recently: in iOS 11 there was a built-in function for this. However, in earlier versions, recording is also possible.

This tutorial details how to record from the iPhone (iPad) screen in three different ways: Using the built-in recording function, as well as from a Mac computer and from a Windows PC or laptop (i.e. the device is connected to the computer and is already produced on it recording of what is happening on the screen).

How to Record from iPhone and iPad Screen in Windows 10, 8 and Windows 7

Note: to use the method, both the iPhone (iPad) and the computer must be connected to the same network, it does not matter via Wi-Fi or using a wired connection.

If necessary, you can record from the screen of your iOS device from a Windows computer or laptop, but this will require third-party software that allows you to perceive the broadcast via AirPlay.

I recommend using the free LonelyScreen AirPlay Receiver program, which can be downloaded from the official website http://eu.Lonelyscreen.com/download.html (after installing the program, you will see a request to allow it to access public and private networks, you should allow it).

The steps for recording will be as follows:

  • Launch LonelyScreen AirPlay Receiver.
  • On your iPhone or iPad connected to the same network as the computer, go to the control point (swipe from bottom to top) and click “Screen Repeat”.
  • The list will show the available devices to which the image can be broadcast via AirPlay, select LonelyScreen.
  • The iOS screen will be displayed on the computer in the program window.

After that, you can record screen recordings using Windows 10 built-in tools (by default, you can call the recording panel with the WinG keyboard shortcut) or using third-party programs (see Best programs for recording from a computer or laptop screen).

Screen Recorder in QuickTime on MacOS

If you own a Mac, you can use the built-in QuickTime Player to record from your iPhone or iPad.

  • Connect your phone or tablet with a cable to your MacBook or iMac, if necessary, allow access to the device (answer the query “trust this computer?”).
  • Launch QuickTime Player on Mac (you can use Spotlight search for this), and then, from the program menu, choose File. New Entry.
  • By default, webcam recording will open, but you can switch the recording to the mobile device screen by clicking on the small arrow next to the recording button and Selecting your device. There you can also select the sound source (microphone on iPhone or Mac).
  • Click the record button to start recording your screen. Press the Stop button to stop.

When you finish recording your screen, choose File Save from the QuickTime Player main menu. By the way, in QuickTime Player you can also record Mac screen, for more details: Record Mac OS screen in QuickTime Player.

How to Record from iPhone Screen

Sometimes there is a need to record from a smartphone screen. Due to the peculiarity of Apple technology, many owners of such gadgets as iPhone and iPad face some difficulties in the implementation of this task. IOS models up to version 11 required additional software or PC connection for screen recording. In the proposed article, we will consider the main existing methods of recording from the iphone screen.

How To Record Screen On iPhone

From the iPhone screen in QuickTime on macOS

Mac users can record with built-in QuickTime.

  • The first step is to connect your iOS 11 and below to your computer using a gadget and, if necessary, allow access to the device;
  • Run the application on your computer, select “File” from the menu and then “New entry”;
  • Recording will start with the front camera by default, so you need to switch recording to the iOS screen. To do this, click on the small arrow next to the record button. In addition, the program allows you to change the sound source, which is supported even by iPhones versions 6s, x, 6, 7
  • To start recording, click on the record button;
  • The captured screen recording is saved in the “File” program, then “Save”

What to do to record iPhone and iPad on iOS 8, 9 and 10 without using a computer

With the AirShou app, you can record from your smartphone screen without using stationary equipment. T.K. The specified software is not part of the App Store, you need to download it from third-party sources.

AirShou Installation Instructions for Apple Gadgets Screen Recording

To book with AirShou, visit sites such as emu4ios.Net or iEmulators.Net. To install it on iPhone and iPad, select the “Install” button and Confirm download when the pop-up window appears.

When the application is installed, go to the “Settings” menu, select “General”, then “Profiles”. In the menu that appears, you need to find and click on “Suzhou Ding Chi Network Tech”.

For the full operation of the application, click on the “Trust Suzhou Ding Chi Network Tech” button and Confirm the action.

How to Record from iPhone or iPad Screen on IOS 11 and Above Instead of Using Computer

  • It is necessary to open the “Settings” menu at the instructions of the gadget and select the “Control Center” menu;
  • Go to the “Customize controls” section and select “Screen recording”, then click on the green plus;

A quick guide to enable iPhone 11 and iPad screen recording

  • Now it is necessary to close the item “NightTroyki” and return to the “Control Center”. It’s very SIMple to do this, you need to swipe up on the screen, where the button for recording will appear. By long pressing this button, you can call up a menu that will allow you to control the recording (pause recording, turn on the microphone)

Convenient recording management menu

  • While in this menu, click “Start Recording” to start recording. While recording is in progress, you can freely use the gadget. In shooting, there will be a red bar displayed at the top of the screen;
  • To stop recording, tap on the red bar and select “Stop”;
  • After recording, it will be saved in the gallery.
READ  How To Take A Screenshot Of Your Laptop Screen

IPhone and iPad Screen Recording Using Windows 7, 8, and 10

To use this method, it is necessary that the iPhone or iPad and the computer are connected to the same network, be it either Wi-Fi or a cable. The free program LonelyScreen AirPlay Receiver, which can be found on the official website, will be very convenient.

To record using this program, you must:

  • Run the program;
  • On your gadget, which is connected to the same network as the PC, log into the control center and select “Screen Repeat”;
  • A list of available devices will appear, in which you need to select “LonelyScreen”;
  • After clicking on the computer screen, your iOS screen will be displayed
  • Now you can record a using Win10 tools: if you use the standard method, call the recording panel using the WinG keyboard shortcut.

How to Record iPhone Screen with AirShou App

To start recording. on your iPhone or iPad, run the application.

At the first start, you must give consent to the application to use the camera. Click “Agree”, after which the main menu opens, where we select “Record”.

Further, it is proposed to name the future and select the desired resolution and screen orientation.

In order to record. In the “Available AirPlay Devices” menu, select “AirPlay Repeat” and then “AirShou” with your specified iOS device.

To end recording using the app, click on the Stop button.

You can view the recorded by clicking on the icon in the upper right corner of the application.

On this topic

This will clearly allow concepts of how to record a screen on a computer or phone.

Programs for recording phone screen on Android

Screen recording of Android devices is impossible without using Special Programs. Below is a list of such applications. they can be found in the Play Market. Please note: they are listed in random order, and not related to the quality, functionality or convenience of a particular program.

How to record from phone screen

Among the standard options for Android gadgets there is no such function as to record from the phone screen; only the ability to take screenshots is provided. In technology from Apple, in the iOS operating system starting from 11 there was an option “Record iPhone Screen” with sound.

Screen Recorder. No Ads

Screen Recorder program. No Ads has a very SIMple interface. If the question of how to record from the screen has arisen from someone who recently uses gadgets, he will be comfortable with this minimalistic interface. You just need to start recording, and it will start after a short pause, the time of which is indicated by the countdown. The length of the is not limited, there is an option to record sound. This recording program has more extensive functionality than it might seem at first glance, although all options are available only in the paid version, but the utility’s price is also low. Root is required on Android versions below 5.0.

V Recorder

Free application; advanced functionality is available in in-app purchases. Screen recording with sound is available. V Recorder allows you to change the aspect ratio of the screen, pause recording, take screenshots. Available: image editor and flexible settings. In addition to recording, the app provides editing options: clip trimming, speed control, hundreds of free themes, an option to draw stickers, filters and much more.

IPhone Screen Recorder and Android Screen Recorder

Now we will take a closer look at the most convenient ways to capture from smartphones and tablets on Android and iOS operating systems. Let’s talk about standard methods and expanding their functionality, how to take a phone screen using third-party programs and how to do it without root rights.

AZ Screen Recorder

The program is free with in-app purchases. To work with AZ Screen Recorder Root rights are not required. The phone screen can be recorded as long as you like, there are limitations. The utility’s functionality is quite extensive: you can pause recording, select resolution, bit rate, speed and display of clicks, record sound from a microphone. Free functionality also implies the ability to add to images and texts and save the on the device or SD card. Advanced functionality includes GIF converter, drawing option, etc.

Screen Recording

Screen Recorder allows you to capture the screen of Android devices, rather than requiring root-rights. There is no limit on the length of thes. You can organize broadcasts, take screenshots, set resolution parameters from 240 to 1080 p. There is a pause option, you can change the screen orientation. Recording starts after a short delay, countdown will help you not miss the start moment.

Screen Recorder. Face Cam Screenshot Capture

Screen Recorder. Face Cam Screenshot Capture. This is a free program that allows you to record screen with music and sounds, no root is needed. Thanks to the floating button, you can record from different applications without switching between them directly. There is a pause option, the ability to change the screen orientation and resolution of the sides, and use picture-in-picture if the user wants to organize the broadcast. Attached editor. Where you can cut, collage, rotate, duplicate fragments. There is also a gallery of stickers, memes, emoticons and filters to creates.

Enable screen recording on iOS

How to set up screen recording on iPhone 5s and newer? In the “Configure items” control point there is a menu that is called “Screen Recorder”. If you activate it, the corresponding icon will appear at the bottom of the screen, and when you click on it, you can record everything that happens on the device. If you press lightly, the recording will turn out without sound, if you press it more hard, it will sound. Only Considering that recording starts after a three second delay (there is a countdown). The is saved in the photo gallery.

How to Record Screen on iPhone and iPad with Sound

Hello! In the morning, as always, I was raking my mail and came across a very interesting question. how to record the screen on your iPhone. At first I didn’t understand a bit, and even thought to delete the letter, but then it dawned on me that the author had in mind the question. how to record from the iPhone screen and save it to my device. In fact, this is not difficult to do. With the release of iOS 11, this can be done using the smartphone itself. I will tell you about three ways that will help you make high quality sound. Further instructions apply to both iPhone and iPad.

From a laptop or Windows computer

How to record from an iPhone with an earlier OS? for this we will use a computer or laptop. Any modern Windows 7, 8, 8.1 or 10 will do. To connect, we need a router. You need two devices to be connected to the same local network. For example, a computer can be connected to a router via a cable, and an iPhone or iPad via Wi-Fi. Once again, I repeat that they must be connected to the same router.

  • We will use screen recording from a reception or broadcast using AirPlay technology. To do this, download the LonelyScreen program from the official website. The program is paid, but it is possible to use the “Free Trial” version. Download and install on your computer.
  • Run the program on the computer.
  • Check again that the iPhone is connected to the same network via Wi-Fi. Next, call the “curtain” and select “Screen Repeat”.
  • The list will only show our program, Running on the computer.

NOTE! If it is not there, also make sure that the computer is connected to the same router and has a “red cross” in the lower right corner of the screen opposite the network icon. Make sure the network card gets automatic DNS and IP settings.

  • Now you will see on the monitor the same screen that is displayed on the smartphone.

We will record the phone screen using one more additional program. To do this, you can use any screen capture software: BlueBerry, CamStudio, Debut Capture or Bandicam. There are both paid and free programs. As a last resort, you can use Trial versions.

READ  How To Take Screenshot On Samsung A51

NOTE! Windows 10 has a built-in screen capture utility that can be invoked with the “WinG” keyboard shortcut.

Standard tools

NOTE! It doesn’t matter what kind of iPad or iPhone you have (5, 5S, 6, 6S, 7, 7S, 8, X). the main thing is that your smartphone has iOS 11 or higher installed. If you have an iPhone 10, then this OS version is the default.

  • “Set up ale. Management “.
  • Click on the plus sign next to the “Screen Recording”.
  • After exiting the settings on the desktop and open the additional menu “Shutter”. Next, you should see an additional icon, which allows the screen to fall asleep or to record. click on it. After that, recording will begin without sound. To change the settings and turn on sound recording, you need to hold down this button for a few seconds, until an additional menu pops up.
  • Here you can turn the sound on or off.

To end recording, you must also click on the same button. Then it will be saved on your phone, and you can use it for any available purpose. For convenience, you can easily send it by mail or to any messenger.

We use macOS

  • Connect iPhone to Mac beech using a USB cable.
  • On the smartphone, you need to allow access from this beech.
  • On a Mac, open the QuickTime Player program. It can be found through the search or in the “Programs” section.
  • In the application, in the top menu, select “File”. “New entry”.
  • The phone opens the recording menu. At first, it will be recorded from the smartphone camera. To switch the mode for recording the desktop, you need to click on the small arrow next to the red circle and select “iPhone”.
  • To enable recording, click on the red circle. At the end of the recording, click there. The file will immediately be uploaded to QuickTime. Remember to save “File”. “Save”.

Screenflow for Mac

Note: ScreenFlow is a free trial program.

Screenflow is almost the same as Camtasia, but more complex. This program is available for a PC. Camtasia is much easier to use. But this is already a matter of taste, perhaps, on the contrary, you will like ScreenFlow.

Instructions:

Install ScreenFlow on your Mac and then connect your iPhone or iPad to it. Open the program and select “New Recording”. You can then tweak various options if you like. For example, if you want to record the iPhone screen, you need to select “Record iOS Device: [device name]” and “Record Audio from.”. When you have selected the options you want, click on the red circle to start recording.

After that, you need to be careful. Screenflow will automatically start recording without notifying you about it. To finish it, press the keyboard shortcut “Command Shift 2”.

Edit the finished recording. You can crop it, cut out some parts, add cutouts, adjust transparency, etc.

Camtasia: Screen Recorder for PC and Mac

Best used when: you want to both record your iPhone screen and edit other recordings. Camtasia has many professional editing tools.

You need to prepare:

  • Computer or Mac with OS X Yosemite or newer. If you have a PC, then you will need an additional mirror application (for more details, see the instructions).
  • IOS device.
  • Lighting cable.
  • Camtasia program (for 249).

Instructions:

If you have a Mac, recording and editing will be easier. Just download and install the Camtasia program, Connect your device, open the program and select File. New Recording in the top menu and start recording, which you can then edit.

Below is a brief instruction from TechSmith. the developer of the program.

If you have a PC, the process is more complicated. First, you need to download a mirror application that will broadcast the contents of your device to your computer screen. How to do this, read our article with detailed instructions. After that, you can download the Camtasia Studio program (the Windows version is called so), record the screen of your iPhone and edit the recordings.

Internal and external sound

This method is perfect when you need to explain in parallel what you are doing.

1) Open Control Center.

2) Strongly press (or hold) the Screen Recorder button.

3) Click the microphone icon to enable external audio recording.

4) Click Start Recording.

Reflector 3 Editor’s Choice

Note: Reflector 3 is a 7-day free trial program.

Best used when: you need to record the screen of an iOS device on a Windows PC without a cable, and you don’t need to edit the finished recording. There is also a version of Reflector 3 for Mac, but it is more convenient to use Quicktime on it.

You need to prepare:

  • Windows or Mac computer.
  • Reflector 3.
  • IOS device.

Instructions:

Download and Install Reflector 3 on your PC or Mac.

Launch Reflector 3. Make sure your iPhone or iPad is connected to the same Wi-Fi network as your computer.

Now turn on AirPlay (Screen Repeat) on your device, for this call, pull the control point from the upper right corner, then hold on the “Screen repeat” icon, select the name of your computer and click on it to start broadcasting. A code will appear on the computer, which will need to be entered on the iPhone to confirm.

Open Reflector 3 and click on the Record button in the top menu bar. When done, click Stop. Save. And that is all.

Adding a Screen Recording to Control Center

First you need to add a screen recording button to Control Center if you haven’t already.

1) Open Settings and select control point.

2) Click Customize Element. Management.

3) In the section ale. Controls click the plus sign next to Screen Recording.

The button will now be displayed in the control center. You can drag it higher in the list in the settings to change the location of the button.

How to Record Screen with Sound

If you need to record screen on iPhone with sound, you have two options. You can record sound only from your iPhone or also with external sound from a microphone.

Standard iPhone functionality (iOS 11. 13) with and without sound

Do you need to record iPhone screen quickly without PC, Mac and third-party applications? For example Step by step instructions for work or a way to show your mom how different things are done on a smartphone. In any case, this is very easy to do. This way you can enable screen recording on iPhone with sound and without sound.

How to Record Screen on iPhone 6 Ways

Recording the screen of a computer or Mac is quite SIMple, because there are many convenient programs for this on the web.

But what if you need to record your screen on your iPhone, iPad or iPod Touch? This is another story.

Why? Because iOS doesn’t make this task easier (at least for iOS 11 versions). You will need a computer to record your cell phone screen too.

In this article, we will explain and show you several ways to record screen on iPhone, starting with the easiest and ending with NOT the most convenient. In addition, we will highlight the pros and cons of each method.

Note: We have not included Illegal or Insecure Methods (e.g. iOS jailbreak) in the list. An example is the Vidyo Screen Recorder app, which was banned by Apple and removed from the App Store in 2016.

Turn on iPhone screen recording

1) Open Control Center.

2) Click the Screen Record button.

After that, a countdown from three seconds will appear on the button. During this time, you can close Control Center and go to the screen from which you want to start recording.

When recording starts, the status bar will turn red. To stop recording, just tap the status bar. You will see a confirmation to stop recording, click “Stop”. To continue recording, click “Cancel”.

When you stop recording, a notification will appear stating that the recording has been saved to Photos on Phone.

How to remove from the screen using a computer program

For Windows There are several programs with which you can Capture from the iPhone screen. They are paid, but Trial versions are available with some restrictions. For example, Wondershare iOS Screen Recorder displays the program logo on the recording floor. The LonelyScreen AirPlay Receiver utility is also paid, but the Trial version has functionality cuts and a watermark overlay, so we recommend using it.

READ  How to Screen Screen on iPhone Xr

Go to the official website and Click on the “Download for Windows” button. Download the installation file and then install the program. When you run the utility for the first time, the Windows Firewall window will appear. allow LonelyScreen to communicate in private and, if necessary, in public networks.

Connect your computer and iPhone to the same network. On your smartphone, expand Control Center, swipe up from the bottom of the display (on bezel-less iPhones, swipe down from the top-right edge). Click on the “Screen Replay” button (“AirPlay replay” in iOS 10 and below) and select “LonelyScreen”.

The image from the iPhone screen will be broadcast in the program window on the computer. To start recording, Expand the panel with the option and Click on the red button “Start recording”.

To stop recording, in the LonelyScreen window, click on the “Stop recording” button. Or, in Control Center on iPhone, select Screen Repeat and click Stop Replay.

To view the footage. Click on the green “Play” button. To go to the location of the file, click on the folder icon. By default, records are stored in the “This computer” directory → “”.

How to screen iPhone and iPad

Only in iOS 11 it became possible to record with sound from the iPhone screen without using third-party programs. But for previous versions of iOS, solutions are available: using a computer or using a special application for iPhone and iPad.

The capture function works in iOS 11 and 12 which are supported by most of Apple mobile devices. If your gadget runs on iOS 10 and is older, you will have to use third-party software. about this in the second and third sections of this manual.

Useful materials for Apple technology owners:

IPhone screen capture on iOS 7, 8, 9 and 10 without computer and jailbreak

For old iPhones running iOS 10 and below, the AirShou program has been created, which can capture from the screen without jailbreak and a computer.

To download the app, go to https://iemulators.com/airshou and scroll to the app descriptions. Click “AirShou” → “Install” → “Install AirShou” and select “Install” in the pop-up window.

The utility will load and its icon will appear on the desktop.

But AirShou will NOT start unless you designate the software developer as trusted. To do this, go to “Settings” → “General” and open “Profiles and device management” (the item may be called “Device management” and “Profiles”).

Select a developer, click “trust” China Mobile Group Heilongjiang Company Limited “and Confirm by clicking” trust “.

After the performed actions, AirShou will start working. Now run the program and allow sending notifications. Then click “Agree”.

In the main application window, select “Record”. Next, enter the name of the future entry or leave the field empty. then the file name will be installed automatically.

Also select the orientation: porter or landscape, and set the resolution in which it will be recorded.

Click Next and give AirShou access to the microphone.

Now call Control Center by swiping up from the bottom edge of the display, and click the “AirPlay repeat” button. Select “AirShou (Device Name)” from the list of available devices and recording will start.

To stop screen capture, open AirShou and press Stop.

Records are displayed in the application on a separate tab. To go to saved. On the AirShou main screen Click on the button in the upper right corner. You can reproduce. Open them in other programs or save them to camera roll (files will be transferred to the “Photos” application).

If the display does not start recording

When you added the screencast button, clicked on it, the timer started, but after the countdown, the shooting did NOT start. do the following:

  • In iOS 11: go to Settings → General → Restrictions, enter the restrictions passcode and activate Screen Recording in the Game Center section.
  • On iOS 12: Go to Settings → Screen Time → Content Privacy, enter your Screen Time Passcode → Content Restrictions → Screen Recording and select Yes.

IPhone Screen Recording with iOS

Although the feature is implemented on devices with iOS 11 and 12 out of the box, the delight from the display is not included in the list of options that are displayed in the control center by default. Therefore, first you need to activate the corresponding button in the settings.

To do this, open the Settings app, select Control Center, and click Customize Controls.

Under Controls Click the plus sign to the left of Screen Recording. The option will immediately move to the “Enable” list and will be displayed in the control center.

Holding your finger on the “Screen recording” case icon, you can move the item, thereby changing the location of the button in the control center. You can also remove unnecessary functions from the panel by clicking on the “minus” to the left of the corresponding element, and confirming with the “Delete” button.

Now, to start shooting, swipe up from the bottom edge of the display (on iPhone X, XR, XS and XS Max, swipe down from the top right edge) and Click on the record icon.

To shoot with sound, forcefully press the button and turn on the “Microphone” in the window that appears. Then Click “Start Recording”.

A timer will start, which will count down 3 seconds, after which the delight starts. At the time of shooting, the status bar will glow red. On iPhone X, XS, XS Max and XR, only the time in the upper left corner is highlighted in red.

To stop recording, Expand the Control Center and click the button again, or Click on the status bar and select “Stop”.

A third method is also available: press the touch button hard and click “Stop Recording”.

Saved in the “Photos” application.

How to record a screencast to GIF

The DU Recorder application will help you create GIF-animation from the recorded screencast. After downloading the program from the App Store, launch it, provide access to “Photos” and allow sending notifications.

According to the instructions from the beginning of the article, add “Screen Recorder” to Control Center, then in the DU Recorder menu click “Record GIF”.

Open Control Center, forcefully press the screencast button, select “DU Recorder” and click “Start Broadcast”.

At the right time, stop broadcasting in a convenient way, after which a notification will pop up that the recording is complete.

The created GIF animation will be displayed in the DU Recorder in the “” section, and will also be saved in the film.

Screen mirroring in iTools

The function of recording images from the screen is also in the infamous iTools utility. This is a paid, more functional alternative to iTunes. The trial version of the program has restrictions on file transfers and delight from the display. Therefore, to unlock the desired function, buy a license or use an activator. The latter can be found on the internet.

Then connect iPhone to PC via USB. When prompted “trust this computer?” Select “trust” and enter the passcode for the device.

Open iTools, go to the “Toolbox” tab if English is installed and select “Screen mirroring” (“Real-time Desktop”).

To start shooting, Click on the red round button. Select the resolution, quality and folder where to save the recording. Then click “OK”.

The delight of the screen image begins. To pause recording, click on pause, and to stop recording, click on the gray square.

If you left the default settings, the files will be saved in the “”.

Other ways

There are other, not less functional utilities available for Windows and macOS. For example, Reflector and AirServer can broadcast (and record) an iPhone display to a computer using AirPlay or Screen Repeat. Both utilities are paid, but have Trial versions. For smartphones that have been jailbroken, the Display Recorder Tweak is suitable. And Mac users can record from the screen of mobile devices using the standard QuickTime software (iPhone connects to PC with Lightning cable).

Home / How To / How to Record iPhone and iPad Screen with Sound