diff --git a/VoiceInk/RiffWaveUtils.swift b/VoiceInk/RiffWaveUtils.swift
deleted file mode 100644
index 23d1187..0000000
--- a/VoiceInk/RiffWaveUtils.swift
+++ /dev/null
@@ -1,14 +0,0 @@
-import Foundation
-
-func decodeWaveFile(_ url: URL) throws -> [Float] {
-    let data = try Data(contentsOf: url)
-    let floats = stride(from: 44, to: data.count, by: 2).map {
-        return data[$0..<$0 + 2].withUnsafeBytes {
-            let short = Int16(littleEndian: $0.load(as: Int16.self))
-            return max(-1.0, min(Float(short) / 32767.0, 1.0))
-        }
-    }
-    return floats
-}
-
-