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{{:Eng:Sound/translate}}

{{about|sounds in the [[Eng:Scratch Program|Scratch Program]]|blocks related to sounds|Sound Blocks}}
{{Warning|Loud sounds (such as screams and certain genres of music) can hurt the viewer's ears or even cause deafness; especially if the volume is set too high or the user is using head/earphones. When using such sounds, it's always wise to add a warning in the [[Eng:Notes and Credits|Notes and Credits]] or lower the volume of the audio if possible.}}
A '''sound''' is an item which one hears that can be played in a [[Eng:Scratch|Scratch]] [[Eng:project|project]], available by importing, Scratch's built-in sound library, or recording. Sounds are played by using the [[Eng:Sound Blocks|sound blocks]], which control a sound's [[Eng:Volume (value)|volume]], [[Eng:Tempo (value)|tempo]], and more. All sounds in Scratch are played in mono.

==Sounds and notes==
All sounds played in a project are divided into two types: sounds and notes.[[File:The Sounds Tab.png|thumb|250px|Sounds can be managed in the Sounds Tab.]]

===Sounds===
Sounds are the items that are available only by importing or recording. These can be obtained in the "Sounds" tab, in which one can import, record, play, and edit sounds.

The following [[Eng:blocks|blocks]] control the playing of these sounds:
*[[Eng:Play Sound () (block)|Play Sound ()]] {{-}} Begins the sound and executes the rest of its [[Eng:script|script]], without waiting for the sound to finish playing.
*[[Eng:Play Sound () Until Done (block)|Play Sound () Until Done]] {{-}} Plays a sound, waits for it to finish playing, and will carry on with its script.
*[[Eng:Stop All Sounds (block)|Stop All Sounds]] {{-}} Cancels all sounds currently playing.
*[[Eng:Set Volume to ()% (block)|Set Volume to ()%]] {{-}} Sets a sprite's volume.
*[[Eng:Change Volume by () (block)|Change Volume by ()]] {{-}} Changes a sprite's volume by a given amount.

===Notes===
{{main|Notes}}
[[File:Blocks relating to notes.png|thumb|Notes can be controlled with a variety of blocks.]]
Prior to [[Eng:Scratch 2.0|Scratch 2.0]], notes were accessed by a MIDI system, which are varieties of notes built in to one's computer. However, since Scratch 2.0 runs on Adobe Flash, the MIDI sound library is uncapable of use, and therefore the [[Eng:Scratch Team|Scratch Team]] had to create their own sounds library built in to the Scratch program. The following blocks are related to notes:
*[[Eng:Play Drum () for () Beats (block)|Play Drum () for () Beats]] {{-}} Plays the specified drum for a given amount of beats.
*[[Eng:Play Note () for () Beats (block)|Play Note () for () Beats]] {{-}} Plays a given note from an instrument chosen in other blocks.
*[[Eng:Set Instrument to () (block)|Set Instrument to ()]] {{-}} Sets the current instrument to one selected from a drop-down menu.
*[[Eng:Set Volume to () (block)|Set Volume to ()]] {{-}} Sets a sprite's volume.
*[[Eng:Change Volume by () (block)|Change Volume by ()]] {{-}} Changes a sprite's volume by a given amount.
*[[Eng:Set Tempo to () bpm (block)|Set Tempo to () bpm]] {{-}} Sets a sprite's tempo (affects the "beat" speed).
*[[Eng:Change Tempo by () (block)|Change Tempo by ()]] {{-}} Changes a sprite's tempo a given amount.
*[[Eng:Rest for () Beats (block)|Rest for () Beats]] {{-}} Plays a rest for a given amount of beats.

==Accessibility of Sounds==

===Importing===

To obtain these, one has to view the Sounds tab of a [[Eng:sprite|sprite]]/[[Eng:stage|stage]] and select the Import button (which appears as a folder). The user will be able to import sounds from their desktop or varying locations, including a sound library that comes with Scratch.

{{note|When a [[Wikipedia:Surround sound|surround sound]] audio file is converted to mono, the surround channels are removed. This is due to Scratch's limitations with sound.}}

===Recording===

[[File:Scratch 2.0 Sound Editor.png|thumb|275px|The Scratch 2.0 sound editor.]]
{{main|Sound Editor}}
Sounds can be recorded, imported, edited, exported and modified in the Scratch 2.0 sound editor. It provides simple options to edit an existing sound for many benefits. For more advanced options not within Scratch's, an external sound editor can be used, but it is not recommended to record music from other websites because
this will result in low-quality music with tons of background noise and quietness. The best way to do it is to import
music.


{{Note}} When recording sound, it may be helpful to turn the volume up a little bit in the Sound Editor before recording. Turning up the volume will make it easier for Scratchers to hear the sound recorded when a project is launched.

== Uploading MP3 Bug ==
{{External Programs}}
With an update to Scratch 2.0, there was also a glitch that imported MP3 files would be blank. Someone, however, learned that you can use [http://audacity.sourceforge.net/ Audacity] to convert these files to WAVs. However, if you do not have this program like many Scratchers, you can try converting the MP3 file to a WAV online.

After a fix was put upon this, another glitch occurred in which imported MP3 files are renamed "instance####".<ref>https://scratch.mit.edu/discuss/topic/78222/</ref> This was fixed on January 20, 2015.<ref>https://scratch.mit.edu/discuss/topic/82972/</ref>

==Synchronizing Sounds and Actions==
There is a slight delay the first time the Scratch player plays a sound. This delay will not be evident while working on the project, only when the page is reloaded entirely. The effect of this is that if one message triggers two scripts, one playing a sound and one animation, the animation script will start running before the sound starts. A very short pause using a [[Eng:Wait () Secs (block)|Wait Block]] before the animating script will prevent this.

==Sound Quality Issue==
Upon the Scratch 2.0 update also came an issue many Scratchers experience when using the sound block to play music. To conserve space on the Scratch servers and prevent any copyright issues, the process of uploading requires that the sound be compressed to a worse quality format.

==See Also==
*[[Eng:Music Projects|Music Projects]]
*[[Eng:Sound Editor|Sound Editor]]
*[[Eng:Sound File Format|Sound File Format]]

==References==
<references/>

[[Category:Scratch Program]]