diff --git a/wdsp/TXA.cpp b/wdsp/TXA.cpp
index c1f160ef7..8897f043c 100644
--- a/wdsp/TXA.cpp
+++ b/wdsp/TXA.cpp
@@ -1040,9 +1040,8 @@ void TXA::SetBPSFreqs (TXA& txa, double _f_low, double _f_high)
     {
         a->f_low = _f_low;
         a->f_high = _f_high;
-        delete[] (a->mults);
         impulse = FIR::fir_bandpass(a->size + 1, _f_low, _f_high, a->samplerate, a->wintype, 1, 1.0 / (float)(2 * a->size));
-        a->mults = FIR::fftcv_mults (2 * a->size, impulse);
+        FIR::fftcv_mults (a->mults, 2 * a->size, impulse);
         delete[] (impulse);
     }
 
@@ -1052,9 +1051,8 @@ void TXA::SetBPSFreqs (TXA& txa, double _f_low, double _f_high)
     {
         a->f_low = _f_low;
         a->f_high = _f_high;
-        delete[] (a->mults);
         impulse = FIR::fir_bandpass(a->size + 1, _f_low, _f_high, a->samplerate, a->wintype, 1, 1.0 / (float)(2 * a->size));
-        a->mults = FIR::fftcv_mults (2 * a->size, impulse);
+        FIR::fftcv_mults (a->mults, 2 * a->size, impulse);
         delete[] (impulse);
     }
 
@@ -1064,9 +1062,8 @@ void TXA::SetBPSFreqs (TXA& txa, double _f_low, double _f_high)
     {
         a->f_low = _f_low;
         a->f_high = _f_high;
-        delete[] (a->mults);
         impulse = FIR::fir_bandpass(a->size + 1, _f_low, _f_high, a->samplerate, a->wintype, 1, 1.0 / (float)(2 * a->size));
-        a->mults = FIR::fftcv_mults (2 * a->size, impulse);
+        FIR::fftcv_mults (a->mults, 2 * a->size, impulse);
         delete[] (impulse);
     }
 }
@@ -1080,9 +1077,8 @@ void TXA::SetBPSWindow (TXA& txa, int _wintype)
     if (a->wintype != _wintype)
     {
         a->wintype = _wintype;
-        delete[] (a->mults);
         impulse = FIR::fir_bandpass(a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (float)(2 * a->size));
-        a->mults = FIR::fftcv_mults (2 * a->size, impulse);
+        FIR::fftcv_mults (a->mults, 2 * a->size, impulse);
         delete[] (impulse);
     }
 
@@ -1091,9 +1087,8 @@ void TXA::SetBPSWindow (TXA& txa, int _wintype)
     if (a->wintype != _wintype)
     {
         a->wintype = _wintype;
-        delete[] (a->mults);
         impulse = FIR::fir_bandpass(a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (float)(2 * a->size));
-        a->mults = FIR::fftcv_mults (2 * a->size, impulse);
+        FIR::fftcv_mults (a->mults, 2 * a->size, impulse);
         delete[] impulse;
     }
 
@@ -1102,9 +1097,8 @@ void TXA::SetBPSWindow (TXA& txa, int _wintype)
     if (a->wintype != _wintype)
     {
         a->wintype = _wintype;
-        delete[] (a->mults);
         impulse = FIR::fir_bandpass (a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (float)(2 * a->size));
-        a->mults = FIR::fftcv_mults (2 * a->size, impulse);
+        FIR::fftcv_mults (a->mults, 2 * a->size, impulse);
         delete[] impulse;
     }
 }
diff --git a/wdsp/bps.cpp b/wdsp/bps.cpp
index af99c0e19..03d9ee0f7 100644
--- a/wdsp/bps.cpp
+++ b/wdsp/bps.cpp
@@ -46,7 +46,7 @@ void BPS::calc()
     infilt.resize(2 * size * 2);
     product.resize(2 * size * 2);
     impulse = FIR::fir_bandpass(size + 1, f_low, f_high, samplerate, wintype, 1, 1.0 / (float)(2 * size));
-    mults = FIR::fftcv_mults(2 * size, impulse);
+    FIR::fftcv_mults(mults, 2 * size, impulse);
     CFor = fftwf_plan_dft_1d(2 * size, (fftwf_complex *) infilt.data(), (fftwf_complex *) product.data(), FFTW_FORWARD, FFTW_PATIENT);
     CRev = fftwf_plan_dft_1d(2 * size, (fftwf_complex *) product.data(), (fftwf_complex *) out, FFTW_BACKWARD, FFTW_PATIENT);
     delete[]impulse;
@@ -56,7 +56,6 @@ void BPS::decalc()
 {
     fftwf_destroy_plan(CRev);
     fftwf_destroy_plan(CFor);
-    delete[] mults;
 }
 
 BPS::BPS(
diff --git a/wdsp/bps.hpp b/wdsp/bps.hpp
index 8133bef58..8a46e5fb3 100644
--- a/wdsp/bps.hpp
+++ b/wdsp/bps.hpp
@@ -56,7 +56,7 @@ public:
     double f_high;
     std::vector<float> infilt;
     std::vector<float> product;
-    float* mults;
+    std::vector<float> mults;
     double samplerate;
     int wintype;
     double gain;
diff --git a/wdsp/emph.cpp b/wdsp/emph.cpp
index 552ac1539..e8f99db14 100644
--- a/wdsp/emph.cpp
+++ b/wdsp/emph.cpp
@@ -43,7 +43,8 @@ void EMPH::calc()
 {
     infilt = new float[2 * size * 2];
     product = new float[2 * size * 2];
-    mults = FCurve::fc_mults(
+    FCurve::fc_mults(
+        mults,
         size,
         f_low,
         f_high,
@@ -63,7 +64,6 @@ void EMPH::decalc()
 {
     fftwf_destroy_plan(CRev);
     fftwf_destroy_plan(CFor);
-    delete[] mults;
     delete[] product;
     delete[] infilt;
 }
diff --git a/wdsp/emph.hpp b/wdsp/emph.hpp
index 21b9f8fc1..8aa535ca6 100644
--- a/wdsp/emph.hpp
+++ b/wdsp/emph.hpp
@@ -34,6 +34,8 @@ warren@wpratt.com
 #ifndef _emph_h
 #define _emph_h
 
+#include <vector>
+
 #include "fftw3.h"
 #include "export.h"
 
@@ -52,7 +54,7 @@ public:
     double f_high;
     float* infilt;
     float* product;
-    float* mults;
+    std::vector<float> mults;
     double rate;
     fftwf_plan CFor;
     fftwf_plan CRev;
diff --git a/wdsp/eq.cpp b/wdsp/eq.cpp
index b2d61bc15..7d7132128 100644
--- a/wdsp/eq.cpp
+++ b/wdsp/eq.cpp
@@ -46,10 +46,10 @@ void EQ::eq_mults (std::vector<float>& mults, int size, int nfreqs, float* F, fl
 {
     std::vector<float> impulse;
     EQP::eq_impulse (impulse, size + 1, nfreqs, F, G, samplerate, scale, ctfmode, wintype);
-    float* _mults = FIR::fftcv_mults(2 * size, impulse.data());
+    std::vector<float> _mults;
+    FIR::fftcv_mults(_mults, 2 * size, impulse.data());
     mults.resize(2 * size * 2);
-    std::copy(_mults, _mults + 2*size*2, mults.begin());
-    delete[] _mults;
+    std::copy(_mults.begin(), _mults.end(), mults.begin());
 }
 
 void EQ::calc()
diff --git a/wdsp/fcurve.cpp b/wdsp/fcurve.cpp
index e0e9781c7..9e0c74bb6 100644
--- a/wdsp/fcurve.cpp
+++ b/wdsp/fcurve.cpp
@@ -149,12 +149,11 @@ void FCurve::fc_impulse (std::vector<float>& impulse, int nc, float f0, float f1
 }
 
 // generate mask for Overlap-Save Filter
-float* FCurve::fc_mults (int size, float f0, float f1, float g0, float g1, int curve, float samplerate, float scale, int ctfmode, int wintype)
+float* FCurve::fc_mults (std::vector<float>& mults, int size, float f0, float f1, float g0, float g1, int curve, float samplerate, float scale, int ctfmode, int wintype)
 {
     std::vector<float> impulse(2 * (size + 1));
     fc_impulse (impulse, size + 1, f0, f1, g0, g1, curve, samplerate, scale, ctfmode, wintype);
-    float* mults = FIR::fftcv_mults(2 * size, impulse.data());
-    return mults;
+    FIR::fftcv_mults(mults, 2 * size, impulse.data());
 }
 
 } // namespace WDSP
diff --git a/wdsp/fcurve.hpp b/wdsp/fcurve.hpp
index 4b137408a..4b33b1eb9 100644
--- a/wdsp/fcurve.hpp
+++ b/wdsp/fcurve.hpp
@@ -38,7 +38,7 @@ class WDSP_API FCurve
 {
 public:
     static void fc_impulse (std::vector<float>& impulse, int nc, float f0, float f1, float g0, float g1, int curve, float samplerate, float scale, int ctfmode, int wintype);
-    static float* fc_mults (int size, float f0, float f1, float g0, float g1, int curve, float samplerate, float scale, int ctfmode, int wintype);
+    static float* fc_mults (std::vector<float>& mults, int size, float f0, float f1, float g0, float g1, int curve, float samplerate, float scale, int ctfmode, int wintype);
 };
 
 } // namespace WDSP
diff --git a/wdsp/fir.cpp b/wdsp/fir.cpp
index b2da83530..aba6ddaae 100644
--- a/wdsp/fir.cpp
+++ b/wdsp/fir.cpp
@@ -35,14 +35,14 @@ warren@pratt.one
 
 namespace WDSP {
 
-float* FIR::fftcv_mults (int NM, float* c_impulse)
+void FIR::fftcv_mults (std::vector<float>& mults, int NM, float* c_impulse)
 {
-    auto mults        = new float[NM * 2];
+    mults.resize(NM * 2);
     std::vector<float> cfft_impulse(NM * 2);
     fftwf_plan ptmp = fftwf_plan_dft_1d(
         NM,
         (fftwf_complex *) cfft_impulse.data(),
-        (fftwf_complex *) mults,
+        (fftwf_complex *) mults.data(),
         FFTW_FORWARD,
         FFTW_PATIENT
     );
@@ -51,7 +51,6 @@ float* FIR::fftcv_mults (int NM, float* c_impulse)
     std::copy(c_impulse, c_impulse + (NM / 2 + 1) * 2, &(cfft_impulse[NM - 2]));
     fftwf_execute (ptmp);
     fftwf_destroy_plan (ptmp);
-    return mults;
 }
 
 float* FIR::get_fsamp_window(int N, int wintype)
diff --git a/wdsp/fir.hpp b/wdsp/fir.hpp
index a57d19630..2cf4a5f4f 100644
--- a/wdsp/fir.hpp
+++ b/wdsp/fir.hpp
@@ -36,7 +36,7 @@ namespace WDSP {
 class WDSP_API FIR
 {
 public:
-    static float* fftcv_mults (int NM, float* c_impulse);
+    static void fftcv_mults (std::vector<float>& mults, int NM, float* c_impulse);
     static void fir_fsamp_odd (std::vector<float>& c_impulse, int N, const float* A, int rtype, double scale, int wintype);
     static void fir_fsamp (std::vector<float>& c_impulse, int N, const float* A, int rtype, double scale, int wintype);
     static float* fir_bandpass (int N, double f_low, double f_high, double samplerate, int wintype, int rtype, double scale);