[AT3P] Improve accuracy of PQF

2 files changed, 4 insertions, 4 deletions

diff --git a/src/atrac/atrac3plus_pqf/atrac3plus_pqf.c b/src/atrac/atrac3plus_pqf/atrac3plus_pqf.c
index 0742469..00e893a 100644
--- a/src/atrac/atrac3plus_pqf/atrac3plus_pqf.c
+++ b/src/atrac/atrac3plus_pqf/atrac3plus_pqf.c
@@ -78,7 +78,7 @@ static void init(void)
     }
 }
 
-static void vectoring(const float* const x, float* y)
+static void vectoring(const float* const x, double* y)
 {
     for (int i = 0; i < 32; i++) {
         y[i] = 0;
@@ -88,7 +88,7 @@ static void vectoring(const float* const x, float* y)
     }
 }
 
-static void matrixing(atde_dct_ctx_t ctx, const float* y, float* samples )
+static void matrixing(atde_dct_ctx_t ctx, const double* y, float* samples )
 {
     float yy[SUBBANDS_NUM];
     float res[SUBBANDS_NUM];
@@ -129,7 +129,7 @@ void at3plus_pqf_free_a_ctx(at3plus_pqf_a_ctx_t ctx)
 
 void at3plus_pqf_do_analyse(at3plus_pqf_a_ctx_t ctx, const float* in, float* out)
 {
-    float y[SUBBANDS_NUM * 2];
+    double y[SUBBANDS_NUM * 2];
 
     float* const buf = ctx->buf;
 
diff --git a/src/atrac/atrac3plus_pqf/ut/ipqf_ut.cpp b/src/atrac/atrac3plus_pqf/ut/ipqf_ut.cpp
index c7eec07..ee2d75d 100644
--- a/src/atrac/atrac3plus_pqf/ut/ipqf_ut.cpp
+++ b/src/atrac/atrac3plus_pqf/ut/ipqf_ut.cpp
@@ -260,7 +260,7 @@ TEST(pqf, Chirp_Long) {
     ff_atrac3p_ipqf(&sctx, &subbands[0], &tmp[0]);
     ff_atrac3p_ipqf(&sctx, &subbands[2048], &tmp[2048]);
 
-    const static float err = 4096.0 / (float)(1<<21);
+    const static float err = 4096.0 / (float)(1<<22);
     for (int i = 368; i < 4096; i++) {
         EXPECT_NEAR(tmp[i], x[i-368], err);
     }