diff --git a/Core/HLE/sceAudiocodec.cpp b/Core/HLE/sceAudiocodec.cpp
index c3aac5606e..e795a272a0 100644
--- a/Core/HLE/sceAudiocodec.cpp
+++ b/Core/HLE/sceAudiocodec.cpp
@@ -20,17 +20,67 @@
 #include "sceAudiocodec.h"
 #include "Core/Reporting.h"
 
-int sceAudiocodecInit(u32 audioCodec, int codeType) {
-	ERROR_LOG_REPORT(ME, "UNIMPL sceAudiocodecInit(%08x, %x)", audioCodec, codeType);
-	return 0;
+enum {
+	PSP_CODEC_AT3PLUS = 0x00001000,
+	PSP_CODEC_AT3 = 0x00001001,
+	PSP_CODEC_MP3 = 0x00001002,
+	PSP_CODEC_AAC = 0x00001003,
+};
+
+static const char *const codecNames[4] = {
+	"AT3+", "AT3", "MP3", "AAC",
+};
+
+static const char *GetCodecName(int codec) {
+	if (codec >= PSP_CODEC_AT3PLUS && codec <= PSP_CODEC_AAC) {
+		return codecNames[codec - PSP_CODEC_AT3PLUS];
+	}	else {
+		return "(unk)";
+	}
 }
-int sceAudiocodecDecode(u32 audioCodec, int codeType) {
-	ERROR_LOG_REPORT(ME, "UNIMPL sceAudiocodecDecode(%08x, %x)", audioCodec, codeType);
+
+// Following kaien_fr's sample code https://github.com/hrydgard/ppsspp/issues/5620#issuecomment-37086024
+// Should probably store the EDRAM get/release status somewhere within here, etc.
+struct AudioCodecContext {
+	u32_le unknown[6];
+	u32_le inDataPtr;   // 6
+	u32_le inDataSize;  // 7
+	u32_le outDataPtr;  // 8
+	u32_le audioSamplesPerFrame;  // 9
+	u32_le inDataSizeAgain;  // 10  ??
+};
+
+int sceAudiocodecInit(u32 ctxPtr, int codec) {
+	ERROR_LOG_REPORT(ME, "UNIMPL sceAudiocodecInit(%08x, %i (%s))", ctxPtr, codec, GetCodecName(codec));
 	return 0;
 }
 
-int sceAudiocodecGetInfo(u32 audioCodec, int codec) {
-	ERROR_LOG_REPORT(ME, "UNIMPL sceAudiocodecGetInfo(%08x, %i)", audioCodec, codec);
+int sceAudiocodecDecode(u32 ctxPtr, int codec) {
+	ERROR_LOG_REPORT(ME, "UNIMPL sceAudiocodecDecode(%08x, %i (%s))", ctxPtr, codec, GetCodecName(codec));
+	if (!ctxPtr) {
+		return -1;
+	}
+	auto ctx = PSPPointer<AudioCodecContext>::Create(ctxPtr);
+	return 0;
+}
+
+int sceAudiocodecGetInfo(u32 ctxPtr, int codec) {
+	ERROR_LOG_REPORT(ME, "UNIMPL sceAudiocodecGetInfo(%08x, %i (%s))", ctxPtr, codec, GetCodecName(codec));
+	return 0;
+}
+
+int sceAudiocodecCheckNeedMem(u32 ctxPtr, int codec) {
+	WARN_LOG(ME, "UNIMPL sceAudiocodecCheckNeedMem(%08x, %i (%s))", ctxPtr, codec, GetCodecName(codec));
+	return 0;
+}
+
+int sceAudiocodecGetEDRAM(u32 ctxPtr, int codec) {
+	WARN_LOG(ME, "UNIMPL sceAudiocodecGetEDRAM(%08x, %i (%s))", ctxPtr, codec, GetCodecName(codec));
+	return 0;
+}
+
+int sceAudiocodecReleaseEDRAM(u32 ctxPtr, int codec) {
+	WARN_LOG(ME, "UNIMPL sceAudiocodecReleaseEDRAM(%08x, %i (%s))", ctxPtr, codec, GetCodecName(codec));
 	return 0;
 }
 
@@ -38,9 +88,9 @@ const HLEFunction sceAudiocodec[] = {
 	{0x70A703F8, WrapI_UI<sceAudiocodecDecode>, "sceAudiocodecDecode"},
 	{0x5B37EB1D, WrapI_UI<sceAudiocodecInit>, "sceAudiocodecInit"},
 	{0x8ACA11D5, WrapI_UI<sceAudiocodecGetInfo>, "sceAudiocodecGetInfo"},
-	{0x3A20A200, 0, "sceAudiocodecGetEDRAM"},
-	{0x29681260, 0, "sceAudiocodecReleaseEDRAM"},
-	{0x9D3F790C, 0, "sceAudiocodecCheckNeedMem"},
+	{0x3A20A200, WrapI_UI<sceAudiocodecGetEDRAM>, "sceAudiocodecGetEDRAM" },
+	{0x29681260, WrapI_UI<sceAudiocodecReleaseEDRAM>, "sceAudiocodecReleaseEDRAM" },
+	{0x9D3F790C, WrapI_UI<sceAudiocodecCheckNeedMem>, "sceAudiocodecCheckNeedMem" },
 	{0x59176a0f, 0, "sceAudiocodec_59176A0F"},
 };