Optionally deserialize AudioParams in SoundSpecifier (#8065)

Content.Shared/Sound/SoundSpecifier.cs

@@ -1,4 +1,6 @@
 using Content.Shared.Audio;
+using JetBrains.Annotations;
+using Robust.Shared.Audio;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
@@ -9,6 +11,9 @@ namespace Content.Shared.Sound
     [ImplicitDataDefinitionForInheritors]
     public abstract class SoundSpecifier
     {
+        [DataField("params")]
+        public AudioParams Params = AudioParams.Default;
+
         public abstract string GetSound();
     }
 
@@ -19,6 +24,7 @@ namespace Content.Shared.Sound
         [DataField(Node, customTypeSerializer: typeof(ResourcePathSerializer), required: true)]
         public ResourcePath? Path { get; }
 
+        [UsedImplicitly]
         public SoundPathSpecifier()
         {
         }
@@ -46,6 +52,7 @@ namespace Content.Shared.Sound
         [DataField(Node, customTypeSerializer: typeof(PrototypeIdSerializer<SoundCollectionPrototype>), required: true)]
         public string? Collection { get; }
 
+        [UsedImplicitly]
         public SoundCollectionSpecifier()
         {
         }