Version 1.0.3.3
I just recompiled and changed the version number according to the policy of the Colossal Order.

Release version 1.0.3.2

Simply, without checking whether it works or not, Colossal Order will display misleading information to the player, such as "This mod may not work because it is old", so as a countermeasure , I just recompiled and uploaded.

Version 1.0.3.1

There is no change in the source code.
It just recompiled as a measure against trouble where GetAudioClip method can not be found.
However, I changed the version number to upload.
Please look at the situation with this.

Version 1.0.3

FIX: It seems that sound is not played even when pushing the test play button on the option screen in the natural disaster DLC.

Version 1.0.2

This update is the adjustment to the extra sound effect (such as horn, yelp etc.).

Changed: Randomization of extra sound effect grant deterrence time for the same vehicle.
Changed: the evaluation method of Play probability of extra sound effects.

As a result of these changes, play probability of extra sound effect will be reduced.

Version 1.0.1

Add one sound effect and add the option of whether or not the use of sound effects other than the siren.

ADD: Toden Arakawa Line departure at the chime (as a sound effect at the time of arrival)
　Filename: Tram Arrive.wav
ADD: Add option "Use wav-file if it exists" at "TEMPORARY FUNCTION" section.
　This option will switch to change the sound effects except the siren.

If you dont want use Toden Arakawa Line arrival chime, please select "Tram Arrive" from dropdown in TEMPORARY FUNCTION and uncheck "Use wav-file if it exists" option.
Or, uncheck "Do not deploy the sound effects that are held as MOD internal resource" at CSLSirenChanger OPTION section, and delete "Tram Arrive.wav" manually.

Version 1.0

Because I was able to realize that I wanted to do, now and then to officially release version.

EXTRA SOUND EFFECTS SUPPORTED.
This is, for example, such as the horn of the car horn or train, is a sound effect that is played from time to time in addition to the normal sound effect.

Sound source is built into the MOD is as follows.
Each of the two types of yelp sound to the emergency vehicle.
Horn is one type of train.
Horn are two types of small cars.
Large vehicle horn is one type.

The naming convention of the WAV file of the case to be prepared on your own:
For example, If you want to add additional horn to the small car, please put the following names.

Small Car Sound.ex.*.wav

Part of the asterisk, can be any string.

For example, the built-in sound source is named "Small Car Sound.ex.horn1.wav", part of "horn1" You can freely naming yourself.

Sound source must be uncompressed wav file like any other.

Setting is enabled or disabled switching and volume of this feature is available in the options screen.
Probability to be played can also be set in the same screen.

Version 0.0.5.0

This update is improved performance is the main.

Changed: Improvement of load performance of the sound effects.
Changed: Sound effect selection drop-down is sorted.
Added: "Do not deploy the sound effects that are held as MOD internal resource as a file." option added.
Changed: Volume settings are saved asynchronously.

Other, organize the redundant code.

Version 0.0.4.0

ADD: Sound effect variation supported
This is the MOD a police siren that had been used in only the Tokyo Metropolitan Police Department until the 1990s has been added as a variation.
Of course, will play a siren at the same time are currently used.

The file name of the variations of the sound effects, just append a number in front of the extension, such as ".1." To the original file name.
Number is up to a maximum of 5.
For example, the file name of this time added a police car of the second sound effect is "Police Car Siren.1.wav".

If you want to add a running sound of tram or train, and to put the files to the above reference, multiple sound effects are played on the game at the same time.

From this version, {police, ambulance, firetruck} .wav file name is abolished. These are, "{Police Car Siren, Ambulance Siren, Fire Truck} .wav" has been changed to.

Version 0.0.3.0

Happy first anniversary!

I heard that maintenance of has been abandoned "Ambient Sounds Tuner".

So, because the patched in this MOD the sound effects, and to be able to also change the sound of the other sound effects.

Sound effects that can be patched is small.

For more information, TO START THE GAME, I want you to look at the options screen.

Ex) (Windows)If you want to change the sound effect of the signal of the arrival of the tram:

Step-1. Prepare a sound file (non-compressed-WAV) that you want to change yourself.
　　Please as a "Tram Arraival.wav" the name. Do not forget the distinction of spaces and upper-case and lower-case characters.
Step-2. Please place the file to the following.
　　%AppData%\..\Local\Colossal Order\Cities_Skylines\Addons\Mods\CSLSirenChanger

File name is not decided in this MOD. It is based on the sound effects table in the game system.
What kind of name is needed? , it can be found in the the options screen during the game.

It is not this more of implementation. Because there is no bother to change the MOD name "CSLSoundEffectChanger".

However, fix if there is a bug (maybe some)

This is useful for a someone?