diff --git a/speaker_driver.lua b/speaker_driver.lua
index cd82523..bdf2938 100644
--- a/speaker_driver.lua
+++ b/speaker_driver.lua
@@ -31,8 +31,10 @@ end
 --     end
 -- end
 
-local function playSpeaker(speaker, data)
-    while not speaker.playAudio(data, 3) do
+local function playSpeaker(speaker, input)
+    local decoder = require("cc.audio.dfpwm").make_decoder()
+    local decoded = decoder(input)
+    while not speaker.playAudio(decoded, 3) do
         os.pullEvent("speaker_audio_empty")
     end
 end
@@ -41,12 +43,13 @@ local function playSound(speakers, fileName)
     local fileStream = getFileName(fileName)
     local values = io.lines(fileStream, 16 * 1024)
     for input in values do
-        print("playing audo....")
-        local decoded = decoder(input)
+        print("playing audio...")
+
         local tasks = {}
         for _, speaker in ipairs(speakers) do
             table.insert(tasks, function()
-                playSpeaker(speaker, decoded)
+                -- each speaker needs its own decoder for the same input chunk
+                playSpeaker(speaker, input)
             end)
         end