diff --git a/src/sfizz.h b/src/sfizz.h
index 933ca722..50202255 100644
--- a/src/sfizz.h
+++ b/src/sfizz.h
@@ -339,7 +339,7 @@ SFIZZ_EXPORTED_API void sfizz_set_sample_rate(sfizz_synth_t* synth, float sample
  * @par Thread-safety constraints
  * - @b RT: the function must be invoked from the Real-time thread
  */
-SFIZZ_EXPORTED_API void sfizz_send_note_on(sfizz_synth_t* synth, int delay, int note_number, char velocity);
+SFIZZ_EXPORTED_API void sfizz_send_note_on(sfizz_synth_t* synth, int delay, int note_number, int velocity);
 
 /**
  * @brief Send a high-precision on event to the synth.
@@ -378,7 +378,7 @@ SFIZZ_EXPORTED_API void sfizz_send_hd_note_on(sfizz_synth_t* synth, int delay, i
  * @par Thread-safety constraints
  * - @b RT: the function must be invoked from the Real-time thread
  */
-SFIZZ_EXPORTED_API void sfizz_send_note_off(sfizz_synth_t* synth, int delay, int note_number, char velocity);
+SFIZZ_EXPORTED_API void sfizz_send_note_off(sfizz_synth_t* synth, int delay, int note_number, int velocity);
 
 /**
  * @brief Send a high-precision note off event to the synth.
@@ -417,7 +417,7 @@ SFIZZ_EXPORTED_API void sfizz_send_hd_note_off(sfizz_synth_t* synth, int delay,
  * @par Thread-safety constraints
  * - @b RT: the function must be invoked from the Real-time thread
  */
-SFIZZ_EXPORTED_API void sfizz_send_cc(sfizz_synth_t* synth, int delay, int cc_number, char cc_value);
+SFIZZ_EXPORTED_API void sfizz_send_cc(sfizz_synth_t* synth, int delay, int cc_number, int cc_value);
 
 /**
  * @brief Send a high precision CC event to the synth.
@@ -508,7 +508,7 @@ SFIZZ_EXPORTED_API void sfizz_send_hd_pitch_wheel(sfizz_synth_t* synth, int dela
  * @par Thread-safety constraints
  * - @b RT: the function must be invoked from the Real-time thread
  */
-SFIZZ_EXPORTED_API void sfizz_send_aftertouch(sfizz_synth_t* synth, int delay, char aftertouch);
+SFIZZ_EXPORTED_API void sfizz_send_aftertouch(sfizz_synth_t* synth, int delay, int aftertouch);
 
 /**
  * @brief Send a high-precision aftertouch event.
@@ -546,7 +546,7 @@ SFIZZ_EXPORTED_API void sfizz_send_hd_aftertouch(sfizz_synth_t* synth, int delay
  * @par Thread-safety constraints
  * - @b RT: the function must be invoked from the Real-time thread
  */
-SFIZZ_EXPORTED_API void sfizz_send_poly_aftertouch(sfizz_synth_t* synth, int delay, int note_number, char aftertouch);
+SFIZZ_EXPORTED_API void sfizz_send_poly_aftertouch(sfizz_synth_t* synth, int delay, int note_number, int aftertouch);
 
 /**
  * @brief Send a high-precision polyphonic aftertouch event.
diff --git a/src/sfizz.hpp b/src/sfizz.hpp
index d17ad902..b96c9555 100644
--- a/src/sfizz.hpp
+++ b/src/sfizz.hpp
@@ -381,7 +381,7 @@ public:
      * @par Thread-safety constraints
      * - @b RT: the function must be invoked from the Real-time thread
      */
-    void noteOn(int delay, int noteNumber, uint8_t velocity) noexcept;
+    void noteOn(int delay, int noteNumber, int velocity) noexcept;
 
     /**
      * @brief Send a high-precision note on event to the synth.
@@ -417,7 +417,7 @@ public:
      * @par Thread-safety constraints
      * - @b RT: the function must be invoked from the Real-time thread
      */
-    void noteOff(int delay, int noteNumber, uint8_t velocity) noexcept;
+    void noteOff(int delay, int noteNumber, int velocity) noexcept;
 
     /**
      * @brief Send a note off event to the synth.
@@ -453,7 +453,7 @@ public:
      * @par Thread-safety constraints
      * - @b RT: the function must be invoked from the Real-time thread
      */
-    void cc(int delay, int ccNumber, uint8_t ccValue) noexcept;
+    void cc(int delay, int ccNumber, int ccValue) noexcept;
 
     /**
      * @brief Send a high precision CC event to the synth
@@ -547,7 +547,7 @@ public:
      * @par Thread-safety constraints
      * - @b RT: the function must be invoked from the Real-time thread
      */
-    void aftertouch(int delay, uint8_t aftertouch) noexcept;
+    void aftertouch(int delay, int aftertouch) noexcept;
 
     /**
      * @brief Send a high-precision aftertouch event to the synth.
@@ -585,7 +585,7 @@ public:
      * @par Thread-safety constraints
      * - @b RT: the function must be invoked from the Real-time thread
      */
-    void polyAftertouch(int delay, int noteNumber, uint8_t aftertouch) noexcept;
+    void polyAftertouch(int delay, int noteNumber, int aftertouch) noexcept;
 
     /**
      * @brief Send a high-precision polyphonic aftertouch event to the synth.
diff --git a/src/sfizz/Synth.cpp b/src/sfizz/Synth.cpp
index 684662ca..9bdeb4a8 100644
--- a/src/sfizz/Synth.cpp
+++ b/src/sfizz/Synth.cpp
@@ -1061,7 +1061,7 @@ void Synth::renderBlock(AudioSpan<float> buffer) noexcept
     SFIZZ_CHECK(isReasonableAudio(buffer.getConstSpan(1)));
 }
 
-void Synth::noteOn(int delay, int noteNumber, uint8_t velocity) noexcept
+void Synth::noteOn(int delay, int noteNumber, int velocity) noexcept
 {
     const float normalizedVelocity = normalizeVelocity(velocity);
     hdNoteOn(delay, noteNumber, normalizedVelocity);
@@ -1077,7 +1077,7 @@ void Synth::hdNoteOn(int delay, int noteNumber, float normalizedVelocity) noexce
     impl.resources_.midiState.noteOnEvent(delay, noteNumber, normalizedVelocity);
 }
 
-void Synth::noteOff(int delay, int noteNumber, uint8_t velocity) noexcept
+void Synth::noteOff(int delay, int noteNumber, int velocity) noexcept
 {
     const float normalizedVelocity = normalizeVelocity(velocity);
     hdNoteOff(delay, noteNumber, normalizedVelocity);
@@ -1221,7 +1221,7 @@ void Synth::Impl::startDelayedSostenutoReleases(Layer* layer, int delay, SisterV
     layer->delayedSostenutoReleases_.clear();
 }
 
-void Synth::cc(int delay, int ccNumber, uint8_t ccValue) noexcept
+void Synth::cc(int delay, int ccNumber, int ccValue) noexcept
 {
     const auto normalizedCC = normalizeCC(ccValue);
     hdcc(delay, ccNumber, normalizedCC);
@@ -1345,7 +1345,7 @@ void Synth::hdPitchWheel(int delay, float normalizedPitch) noexcept
     impl.performHdcc(delay, ExtendedCCs::pitchBend, normalizedPitch, false);
 }
 
-void Synth::aftertouch(int delay, uint8_t aftertouch) noexcept
+void Synth::aftertouch(int delay, int aftertouch) noexcept
 {
     const float normalizedAftertouch = normalize7Bits(aftertouch);
     hdAftertouch(delay, normalizedAftertouch);
@@ -1369,7 +1369,7 @@ void Synth::hdAftertouch(int delay, float normAftertouch) noexcept
     impl.performHdcc(delay, ExtendedCCs::channelAftertouch, normAftertouch, false);
 }
 
-void Synth::polyAftertouch(int delay, int noteNumber, uint8_t aftertouch) noexcept
+void Synth::polyAftertouch(int delay, int noteNumber, int aftertouch) noexcept
 {
     const float normalizedAftertouch = normalize7Bits(aftertouch);
     hdPolyAftertouch(delay, noteNumber, normalizedAftertouch);
diff --git a/src/sfizz/Synth.h b/src/sfizz/Synth.h
index d44e3812..2c97effe 100644
--- a/src/sfizz/Synth.h
+++ b/src/sfizz/Synth.h
@@ -352,7 +352,7 @@ public:
      * @param noteNumber the midi note number
      * @param velocity the midi note velocity
      */
-    void noteOn(int delay, int noteNumber, uint8_t velocity) noexcept;
+    void noteOn(int delay, int noteNumber, int velocity) noexcept;
     /**
      * @brief Send a high-precision note on event to the synth
      *
@@ -370,7 +370,7 @@ public:
      * @param noteNumber the midi note number
      * @param velocity the midi note velocity
      */
-    void noteOff(int delay, int noteNumber, uint8_t velocity) noexcept;
+    void noteOff(int delay, int noteNumber, int velocity) noexcept;
     /**
      * @brief Send a high-precision note off event to the synth
      *
@@ -388,7 +388,7 @@ public:
      * @param ccNumber the cc number
      * @param ccValue the cc value
      */
-    void cc(int delay, int ccNumber, uint8_t ccValue) noexcept;
+    void cc(int delay, int ccNumber, int ccValue) noexcept;
     /**
      * @brief Send a high precision CC event to the synth
      *
@@ -446,7 +446,7 @@ public:
      *              the block in the next call to renderBlock().
      * @param aftertouch the aftertouch value
      */
-    void aftertouch(int delay, uint8_t aftertouch) noexcept;
+    void aftertouch(int delay, int aftertouch) noexcept;
     /**
      * @brief Send a high precision aftertouch event to the synth
      *
@@ -471,7 +471,7 @@ public:
      * @param noteNumber
      * @param normAftertouch
      */
-    void polyAftertouch(int delay, int noteNumber, uint8_t aftertouch) noexcept;
+    void polyAftertouch(int delay, int noteNumber, int aftertouch) noexcept;
     /**
      * @brief Send a polyphonic aftertouch event to the synth
      *
diff --git a/src/sfizz/sfizz.cpp b/src/sfizz/sfizz.cpp
index 62f9bb3a..29f9303a 100644
--- a/src/sfizz/sfizz.cpp
+++ b/src/sfizz/sfizz.cpp
@@ -160,7 +160,7 @@ void sfz::Sfizz::setVolume(float volume) noexcept
     synth->synth.setVolume(volume);
 }
 
-void sfz::Sfizz::noteOn(int delay, int noteNumber, uint8_t velocity) noexcept
+void sfz::Sfizz::noteOn(int delay, int noteNumber, int velocity) noexcept
 {
     synth->synth.noteOn(delay, noteNumber, velocity);
 }
@@ -170,7 +170,7 @@ void sfz::Sfizz::hdNoteOn(int delay, int noteNumber, float velocity) noexcept
     synth->synth.hdNoteOn(delay, noteNumber, velocity);
 }
 
-void sfz::Sfizz::noteOff(int delay, int noteNumber, uint8_t velocity) noexcept
+void sfz::Sfizz::noteOff(int delay, int noteNumber, int velocity) noexcept
 {
     synth->synth.noteOff(delay, noteNumber, velocity);
 }
@@ -180,7 +180,7 @@ void sfz::Sfizz::hdNoteOff(int delay, int noteNumber, float velocity) noexcept
     synth->synth.hdNoteOff(delay, noteNumber, velocity);
 }
 
-void sfz::Sfizz::cc(int delay, int ccNumber, uint8_t ccValue) noexcept
+void sfz::Sfizz::cc(int delay, int ccNumber, int ccValue) noexcept
 {
     synth->synth.cc(delay, ccNumber, ccValue);
 }
@@ -205,7 +205,7 @@ void sfz::Sfizz::hdPitchWheel(int delay, float pitch) noexcept
     synth->synth.hdPitchWheel(delay, pitch);
 }
 
-void sfz::Sfizz::aftertouch(int delay, uint8_t aftertouch) noexcept
+void sfz::Sfizz::aftertouch(int delay, int aftertouch) noexcept
 {
     synth->synth.aftertouch(delay, aftertouch);
 }
@@ -215,7 +215,7 @@ void sfz::Sfizz::hdAftertouch(int delay, float aftertouch) noexcept
     synth->synth.hdAftertouch(delay, aftertouch);
 }
 
-void sfz::Sfizz::polyAftertouch(int delay, int noteNumber, uint8_t aftertouch) noexcept
+void sfz::Sfizz::polyAftertouch(int delay, int noteNumber, int aftertouch) noexcept
 {
     synth->synth.polyAftertouch(delay, noteNumber, aftertouch);
 }
diff --git a/src/sfizz/sfizz_wrapper.cpp b/src/sfizz/sfizz_wrapper.cpp
index c431dd5d..76400227 100644
--- a/src/sfizz/sfizz_wrapper.cpp
+++ b/src/sfizz/sfizz_wrapper.cpp
@@ -114,7 +114,7 @@ void sfizz_set_sample_rate(sfizz_synth_t* synth, float sample_rate)
     synth->synth.setSampleRate(sample_rate);
 }
 
-void sfizz_send_note_on(sfizz_synth_t* synth, int delay, int note_number, char velocity)
+void sfizz_send_note_on(sfizz_synth_t* synth, int delay, int note_number, int velocity)
 {
     synth->synth.noteOn(delay, note_number, velocity);
 }
@@ -122,7 +122,7 @@ void sfizz_send_hd_note_on(sfizz_synth_t* synth, int delay, int note_number, flo
 {
     synth->synth.hdNoteOn(delay, note_number, velocity);
 }
-void sfizz_send_note_off(sfizz_synth_t* synth, int delay, int note_number, char velocity)
+void sfizz_send_note_off(sfizz_synth_t* synth, int delay, int note_number, int velocity)
 {
     synth->synth.noteOff(delay, note_number, velocity);
 }
@@ -130,7 +130,7 @@ void sfizz_send_hd_note_off(sfizz_synth_t* synth, int delay, int note_number, fl
 {
     synth->synth.hdNoteOff(delay, note_number, velocity);
 }
-void sfizz_send_cc(sfizz_synth_t* synth, int delay, int cc_number, char cc_value)
+void sfizz_send_cc(sfizz_synth_t* synth, int delay, int cc_number, int cc_value)
 {
     synth->synth.cc(delay, cc_number, cc_value);
 }
@@ -150,7 +150,7 @@ void sfizz_send_hd_pitch_wheel(sfizz_synth_t* synth, int delay, float pitch)
 {
     synth->synth.hdPitchWheel(delay, pitch);
 }
-void sfizz_send_aftertouch(sfizz_synth_t* synth, int delay, char aftertouch)
+void sfizz_send_aftertouch(sfizz_synth_t* synth, int delay, int aftertouch)
 {
     synth->synth.aftertouch(delay, aftertouch);
 }
@@ -158,7 +158,7 @@ void sfizz_send_hd_aftertouch(sfizz_synth_t* synth, int delay, float aftertouch)
 {
     synth->synth.hdAftertouch(delay, aftertouch);
 }
-void sfizz_send_poly_aftertouch(sfizz_synth_t* synth, int delay, int note_number, char aftertouch)
+void sfizz_send_poly_aftertouch(sfizz_synth_t* synth, int delay, int note_number, int aftertouch)
 {
     synth->synth.polyAftertouch(delay, note_number, aftertouch);
 }