From d51a1330f6027619c5b34deaa17a7031a4bf5b52 Mon Sep 17 00:00:00 2001
From: PA Dev Bot <344001113+pa-devbot@users.noreply.github.com>
Date: Sat, 17 Oct 2026 17:13:58 +0000
Subject: [PATCH 1/2] AudioResampler: default to 32 taps.

16 taps is a fairly aggressive truncation of the ideal sinc window;
32 taps is still cheap (the kernels are tap-count agnostic, the cost
is one weight table row per tap) and measurably closer to the ideal
filter for the sample rates this node targets.
---
 .../Source/Kernels/AudioResampler/Kernels_AudioResampler.h      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler.h b/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler.h
index 45ec31c4b3..be8545aa92 100644
--- a/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler.h
+++ b/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler.h
@@ -39,7 +39,7 @@ class AudioResampler : public AudioPipeline::WorkingAudioStreamListener{
         size_t out_sample_rate,
         size_t channels,
         size_t buffer_size = 4096 + 256, //  4k + break super-alignment
-        uint32_t taps = 16,
+        uint32_t taps = 32,
         double beta = 9.0
     );
 

From 338a637be477ae49c94cf957b7d87816ad77c2ee Mon Sep 17 00:00:00 2001
From: PA Dev Bot <344001113+pa-devbot@users.noreply.github.com>
Date: Sat, 17 Oct 2026 17:13:58 +0000
Subject: [PATCH 2/2] AudioResampler: test tap counts from 1 to 64.

Stream tests: a 1/2/3/4/5/8/32/48/63/64 sweep on the 1:1 combo
(counts below the kernels' tap blocks are zero padded, odd counts
exercise the unrolls' final partial group, wide counts stress the
carry sizing and Kaiser window width) plus taps 1 and 64 on the
strongest upsampling combo, where the tap count dominates the next
block's input requirement. Dispatch tests: taps 1, 32, 64 across the
kernel families. Default-kernel ULP tests: taps 1 and 64 alongside
the standard 16.
---
 .../Kernels_AudioResampler_Tests.cpp          | 30 ++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler_Tests.cpp b/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler_Tests.cpp
index 9c68b4c505..e77e5827fa 100644
--- a/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler_Tests.cpp
+++ b/SerialPrograms/Source/Kernels/AudioResampler/Kernels_AudioResampler_Tests.cpp
@@ -443,6 +443,20 @@ void add_tests(UnitTestDatabase& database){
         );
     }
 
+    //  A spread of tap counts across the supported range on the 1:1 combo
+    //  (16 taps is the first combo above): counts below the kernels' tap
+    //  blocks are zero padded, odd counts exercise the unrolls' final
+    //  partial group, and the wide counts stress the carry sizing and the
+    //  Kaiser window width.
+    const uint32_t sweep_taps[] = { 1, 2, 3, 4, 5, 8, 32, 48, 63, 64 };
+    for (uint32_t taps : sweep_taps){
+        database.add<ResamplerStreamTest>(44100, 44100, 1, 4000, 100, taps, 9.0);
+    }
+    //  Degenerate and wide tap counts on the strongest upsampling combo,
+    //  where the tap count dominates the next block's input requirement.
+    database.add<ResamplerStreamTest>(8000, 44100, 1, 4000, 100, 1, 9.0);
+    database.add<ResamplerStreamTest>(8000, 44100, 1, 4000, 100, 64, 9.0);
+
     //  Dispatch choices across rate ratios, with a spread of tap counts
     //  for the table itself. Odd tap counts exercise the unrolls' final
     //  partial group reading the table's zero padded rows.
@@ -460,6 +474,11 @@ void add_tests(UnitTestDatabase& database){
         { 44100, 22050, 8 },
         { 90000, 20000, 4 },
         { 8000, 44100, 3 },
+        //  The tap extremes across the kernel families.
+        { 44100, 44100, 1 },
+        { 44100, 48000, 64 },
+        { 88200, 44100, 32 },
+        { 128000, 8000, 64 },
     };
     for (auto& combo : dispatch_combos){
         database.add<BlockDispatchTest>(
@@ -467,11 +486,20 @@ void add_tests(UnitTestDatabase& database){
         );
     }
 
-    //  The Default kernel doubles as the reference for the SIMD variants.
+    //  The Default kernel doubles as the reference for the SIMD variants,
+    //  with the tap extremes alongside the standard count.
+    database.add<BlockKernelTest>(
+        "Default", run_block8_Default,
+        48000, 44100, 1, 8, 1, 0
+    );
     database.add<BlockKernelTest>(
         "Default", run_block8_Default,
         48000, 44100, 16, 8, 1, 0
     );
+    database.add<BlockKernelTest>(
+        "Default", run_block8_Default,
+        48000, 44100, 64, 8, 1, 0
+    );
     //  The block straddles the table period (147) into the continuing
     //  index columns.
     database.add<BlockKernelTest>(