diff --git a/src/audio_core/hle/audiotoolbox_decoder.cpp b/src/audio_core/hle/audiotoolbox_decoder.cpp
index 2b122f008..83d4a41ae 100644
--- a/src/audio_core/hle/audiotoolbox_decoder.cpp
+++ b/src/audio_core/hle/audiotoolbox_decoder.cpp
@@ -85,7 +85,11 @@ std::optional<BinaryMessage> AudioToolboxDecoder::Impl::ProcessRequest(
     case DecoderCommand::EncodeDecode: {
         return Decode(request);
     }
-    case DecoderCommand::Unknown: {
+    case DecoderCommand::Shutdown:
+    case DecoderCommand::SaveState:
+    case DecoderCommand::LoadState: {
+        LOG_WARNING(Audio_DSP, "Got unimplemented binary request: {}",
+                    static_cast<u16>(request.header.cmd));
         BinaryMessage response = request;
         response.header.result = ResultStatus::Success;
         return response;
diff --git a/src/audio_core/hle/decoder.cpp b/src/audio_core/hle/decoder.cpp
index a11fc4834..872da9c16 100644
--- a/src/audio_core/hle/decoder.cpp
+++ b/src/audio_core/hle/decoder.cpp
@@ -42,7 +42,9 @@ std::optional<BinaryMessage> NullDecoder::ProcessRequest(const BinaryMessage& re
     BinaryMessage response{};
     switch (request.header.cmd) {
     case DecoderCommand::Init:
-    case DecoderCommand::Unknown:
+    case DecoderCommand::Shutdown:
+    case DecoderCommand::SaveState:
+    case DecoderCommand::LoadState:
         response = request;
         response.header.result = ResultStatus::Success;
         return response;
diff --git a/src/audio_core/hle/decoder.h b/src/audio_core/hle/decoder.h
index 69bdaba89..d3cc910e8 100644
--- a/src/audio_core/hle/decoder.h
+++ b/src/audio_core/hle/decoder.h
@@ -14,9 +14,16 @@
 namespace AudioCore::HLE {
 
 enum class DecoderCommand : u16 {
+    /// Initializes the decoder.
     Init = 0,
+    /// Decodes/encodes a data frame.
     EncodeDecode = 1,
-    Unknown = 2, // Probably UnInit
+    /// Shuts down the decoder.
+    Shutdown = 2,
+    /// Loads the saved decoder state. Used for DSP wake.
+    LoadState = 3,
+    /// Saves the decoder state. Used for DSP sleep.
+    SaveState = 4,
 };
 
 enum class DecoderCodec : u16 {
diff --git a/src/audio_core/hle/fdk_decoder.cpp b/src/audio_core/hle/fdk_decoder.cpp
index 0de539085..a29d659b7 100644
--- a/src/audio_core/hle/fdk_decoder.cpp
+++ b/src/audio_core/hle/fdk_decoder.cpp
@@ -111,7 +111,11 @@ std::optional<BinaryMessage> FDKDecoder::Impl::ProcessRequest(const BinaryMessag
     case DecoderCommand::EncodeDecode: {
         return Decode(request);
     }
-    case DecoderCommand::Unknown: {
+    case DecoderCommand::Shutdown:
+    case DecoderCommand::SaveState:
+    case DecoderCommand::LoadState: {
+        LOG_WARNING(Audio_DSP, "Got unimplemented binary request: {}",
+                    static_cast<u16>(request.header.cmd));
         BinaryMessage response = request;
         response.header.result = ResultStatus::Success;
         return response;
diff --git a/src/audio_core/hle/ffmpeg_decoder.cpp b/src/audio_core/hle/ffmpeg_decoder.cpp
index d291343ca..58dbfb3e9 100644
--- a/src/audio_core/hle/ffmpeg_decoder.cpp
+++ b/src/audio_core/hle/ffmpeg_decoder.cpp
@@ -80,7 +80,11 @@ std::optional<BinaryMessage> FFMPEGDecoder::Impl::ProcessRequest(const BinaryMes
     case DecoderCommand::EncodeDecode: {
         return Decode(request);
     }
-    case DecoderCommand::Unknown: {
+    case DecoderCommand::Shutdown:
+    case DecoderCommand::SaveState:
+    case DecoderCommand::LoadState: {
+        LOG_WARNING(Audio_DSP, "Got unimplemented binary request: {}",
+                    static_cast<u16>(request.header.cmd));
         BinaryMessage response = request;
         response.header.result = ResultStatus::Success;
         return response;
diff --git a/src/audio_core/hle/hle.cpp b/src/audio_core/hle/hle.cpp
index 78551a7f7..38632d252 100644
--- a/src/audio_core/hle/hle.cpp
+++ b/src/audio_core/hle/hle.cpp
@@ -319,6 +319,10 @@ void DspHle::Impl::PipeWrite(DspPipe pipe_number, std::span<const u8> buffer) {
             pipe_data[static_cast<u32>(pipe_number)].resize(sizeof(value));
             std::memcpy(pipe_data[static_cast<u32>(pipe_number)].data(), &value, sizeof(value));
         }
+        auto dsp = dsp_dsp.lock();
+        if (dsp) {
+            dsp->SignalInterrupt(InterruptType::Pipe, DspPipe::Binary);
+        }
         break;
     }
     default:
@@ -461,8 +465,6 @@ void DspHle::Impl::AudioTickCallback(s64 cycles_late) {
         // TODO(merry): Signal all the other interrupts as appropriate.
         if (auto service = dsp_dsp.lock()) {
             service->SignalInterrupt(InterruptType::Pipe, DspPipe::Audio);
-            // HACK(merry): Added to prevent regressions. Will remove soon.
-            service->SignalInterrupt(InterruptType::Pipe, DspPipe::Binary);
         }
     }
 
diff --git a/src/audio_core/hle/mediandk_decoder.cpp b/src/audio_core/hle/mediandk_decoder.cpp
index 4dc3154dc..7c63b3f75 100644
--- a/src/audio_core/hle/mediandk_decoder.cpp
+++ b/src/audio_core/hle/mediandk_decoder.cpp
@@ -110,7 +110,11 @@ std::optional<BinaryMessage> MediaNDKDecoder::Impl::ProcessRequest(const BinaryM
     case DecoderCommand::EncodeDecode: {
         return Decode(request);
     }
-    case DecoderCommand::Unknown: {
+    case DecoderCommand::Shutdown:
+    case DecoderCommand::SaveState:
+    case DecoderCommand::LoadState: {
+        LOG_WARNING(Audio_DSP, "Got unimplemented binary request: {}",
+                    static_cast<u16>(request.header.cmd));
         BinaryMessage response = request;
         response.header.result = ResultStatus::Success;
         return response;
diff --git a/src/audio_core/hle/wmf_decoder.cpp b/src/audio_core/hle/wmf_decoder.cpp
index dca0428fe..e49f86eb0 100644
--- a/src/audio_core/hle/wmf_decoder.cpp
+++ b/src/audio_core/hle/wmf_decoder.cpp
@@ -115,7 +115,11 @@ std::optional<BinaryMessage> WMFDecoder::Impl::ProcessRequest(const BinaryMessag
     case DecoderCommand::EncodeDecode: {
         return Decode(request);
     }
-    case DecoderCommand::Unknown: {
+    case DecoderCommand::Shutdown:
+    case DecoderCommand::SaveState:
+    case DecoderCommand::LoadState: {
+        LOG_WARNING(Audio_DSP, "Got unimplemented binary request: {}",
+                    static_cast<u16>(request.header.cmd));
         BinaryMessage response = request;
         response.header.result = ResultStatus::Success;
         return response;