diff --git a/types/pseudo-audio-param/index.d.ts b/types/pseudo-audio-param/index.d.ts
new file mode 100644
index 0000000000..beaf205b7d
--- /dev/null
+++ b/types/pseudo-audio-param/index.d.ts
@@ -0,0 +1,47 @@
+// Type definitions for pseudo-audio-param 1.3
+// Project: https://github.com/mohayonao/pseudo-audio-param/
+// Definitions by: Drew Petersen <https://github.com/kirbysayshi>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare module "pseudo-audio-param" {
+    export = PseudoAudioParam;
+}
+
+interface PseudoAudioParamEvent {
+    type: string;
+    time: number;
+}
+
+/** Simulate scheduled AudioParam values */
+declare class PseudoAudioParam {
+    events: PseudoAudioParamEvent[];
+
+    constructor(defaultValue: number);
+
+    /**
+     * Return scheduled value at time
+     */
+    getValueAtTime(time: number): number;
+
+    /**
+     * Apply scheduled methods to the provided audioParam. If reset is `true`,
+     * cancel all events of AudioParam before applying
+     */
+    applyTo(audioParam: AudioParam, reset: boolean): PseudoAudioParam;
+
+    setValueAtTime(value: number, time: number): PseudoAudioParam;
+    linearRampToValueAtTime(value: number, time: number): PseudoAudioParam;
+    exponentialRampToValueAtTime(value: number, time: number): PseudoAudioParam;
+    setTargetAtTime(
+        value: number,
+        time: number,
+        timeConstant: number
+    ): PseudoAudioParam;
+    setValueCurveAtTime(
+        values: number[],
+        time: number,
+        duration: number
+    ): PseudoAudioParam;
+    cancelScheduledValues(time: number): PseudoAudioParam;
+    cancelAndHoldAtTime(time: number): PseudoAudioParam;
+}
diff --git a/types/pseudo-audio-param/pseudo-audio-param-tests.ts b/types/pseudo-audio-param/pseudo-audio-param-tests.ts
new file mode 100644
index 0000000000..0c0bfe7b90
--- /dev/null
+++ b/types/pseudo-audio-param/pseudo-audio-param-tests.ts
@@ -0,0 +1,9 @@
+import PseudoAudioParam = require('pseudo-audio-param');
+const p = new PseudoAudioParam(1);
+const v: number = p.getValueAtTime(0.1);
+
+const ctx = new AudioContext();
+const gain = new GainNode(ctx);
+p.applyTo(gain.gain, false);
+
+p.setValueAtTime(0, 1);
diff --git a/types/pseudo-audio-param/tsconfig.json b/types/pseudo-audio-param/tsconfig.json
new file mode 100644
index 0000000000..58c4d8e868
--- /dev/null
+++ b/types/pseudo-audio-param/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6", "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "pseudo-audio-param-tests.ts"
+    ]
+}
diff --git a/types/pseudo-audio-param/tslint.json b/types/pseudo-audio-param/tslint.json
new file mode 100644
index 0000000000..c9579fee14
--- /dev/null
+++ b/types/pseudo-audio-param/tslint.json
@@ -0,0 +1,7 @@
+{
+  "extends": "dtslint/dt.json",
+  "rules": {
+    "no-single-declare-module": false,
+    "no-declare-current-package": false
+  }
+}