diff --git a/libs/backends/portaudio/dsp_load_calculator.h b/libs/backends/portaudio/dsp_load_calculator.h
deleted file mode 100644
index 2ae9209746..0000000000
--- a/libs/backends/portaudio/dsp_load_calculator.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef DSP_LOAD_CALCULATOR_H
-#define DSP_LOAD_CALCULATOR_H
-
-#include <stdint.h>
-
-class DSPLoadCalculator {
-public:
-	DSPLoadCalculator()
-	    : m_max_time_us(0)
-	    , m_start_timestamp_us(0)
-	    , m_stop_timestamp_us(0)
-	    , m_dsp_load(0.0f)
-	{
-	}
-
-	void set_max_time_us(uint64_t max_time_us) { m_max_time_us = max_time_us; }
-
-	uint64_t get_max_time_us() { return m_max_time_us; }
-
-	void set_start_timestamp_us(uint64_t start_timestamp_us)
-	{
-		m_start_timestamp_us = start_timestamp_us;
-	}
-
-	void set_stop_timestamp_us(uint64_t stop_timestamp_us)
-	{
-		m_stop_timestamp_us = stop_timestamp_us;
-
-		if (elapsed_time_us() > m_max_time_us) {
-			m_dsp_load = 1.0f;
-		} else {
-			const float load = elapsed_time_us() / (float)m_max_time_us;
-			if (load > m_dsp_load) {
-				m_dsp_load = load;
-			} else {
-				const float alpha = 0.2f * (m_max_time_us * 1e-6f);
-				m_dsp_load = m_dsp_load + alpha * (load - m_dsp_load) + 1e-12;
-			}
-		}
-	}
-
-	uint64_t elapsed_time_us()
-	{
-		return m_stop_timestamp_us - m_start_timestamp_us;
-	}
-
-	/**
-	 * @return a decimal value between 0.0 and 1.0 representing the percentage
-	 * of time spent between start and stop in proportion to the max expected time
-	 * in microseconds(us).
-	 */
-	float get_dsp_load()
-	{
-		if (m_dsp_load > m_max_time_us) {
-			return 1.0f;
-		}
-		if (m_dsp_load < 0.0f) {
-			return 0.0f;
-		}
-		return m_dsp_load;
-	}
-
-private:
-	uint64_t m_max_time_us;
-	uint64_t m_start_timestamp_us;
-	uint64_t m_stop_timestamp_us;
-	float m_dsp_load;
-};
-
-#endif // DSP_LOAD_CALCULATOR_H