diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0c4b291..94967586 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -80,7 +80,7 @@ add_test(NAME 001_highsnr_virtual2_P_P
                         PATH=$PATH:${CODEC2_BUILD_DIR}/src;
                         cd ${CMAKE_CURRENT_SOURCE_DIR}/test/001_highsnr_stdio_audio;
                         ./test_virtual2.sh")
-       set_tests_properties(001_highsnr_virtual2_P_P PROPERTIES PASS_REGULAR_EXPRESSION "RECEIVED BURSTS: 5 RECEIVED FRAMES: 10 RX_ERRORS: 0")
+       set_tests_properties(001_highsnr_virtual2_P_P PROPERTIES PASS_REGULAR_EXPRESSION "RECEIVED BURSTS: 3 RECEIVED FRAMES: 6 RX_ERRORS: 0")
 
 # Multimode test with Python I/O
 add_test(NAME 001_highsnr_virtual3_P_P_MM
diff --git a/test/001_highsnr_stdio_audio/test_virtual1.sh b/test/001_highsnr_stdio_audio/test_virtual1.sh
index 00e09b84..dcb46693 100755
--- a/test/001_highsnr_stdio_audio/test_virtual1.sh
+++ b/test/001_highsnr_stdio_audio/test_virtual1.sh
@@ -20,8 +20,8 @@ MAX_RUN_TIME=2600
 # make sure all child processes are killed when we exit
 trap 'jobs -p | xargs -r kill' EXIT
 
-arecord --device="plughw:CARD=CHAT2,DEV=0" -f S16_LE -d $MAX_RUN_TIME | python3 test_rx.py --mode datac0 --frames 2 --bursts 5 --debug &
+arecord --device="plughw:CARD=CHAT2,DEV=0" -r 48000 -f S16_LE -d $MAX_RUN_TIME | python3 test_rx.py --mode datac0 --frames 2 --bursts 5 --debug &
 rx_pid=$!
 sleep 1
-python3 test_tx.py --mode datac0 --frames 2 --bursts 5 --delay 500 | aplay --device="plughw:CARD=CHAT2,DEV=1" -f S16_LE
+python3 test_tx.py --mode datac0 --frames 2 --bursts 5 --delay 500 | aplay --device="plughw:CARD=CHAT2,DEV=1" -r 48000 -f S16_LE
 wait ${rx_pid}
diff --git a/test/001_highsnr_stdio_audio/test_virtual2.sh b/test/001_highsnr_stdio_audio/test_virtual2.sh
index d3e5522b..5176040a 100755
--- a/test/001_highsnr_stdio_audio/test_virtual2.sh
+++ b/test/001_highsnr_stdio_audio/test_virtual2.sh
@@ -13,13 +13,11 @@ function check_alsa_loopback {
 
 check_alsa_loopback
 
-RX_LOG=$(mktemp)
-
 # make sure all child processes are killed when we exit
 trap 'jobs -p | xargs -r kill' EXIT
 
-python3 test_rx.py --mode datac0 --frames 2 --bursts 5 --audiodev -2 --debug --timeout 20 &
+python3 test_rx.py --mode datac0 --frames 2 --bursts 3 --audiodev -2 --debug  &
 rx_pid=$!
 sleep 1
-python3 test_tx.py --mode datac0 --frames 2 --bursts 5 --delay 250 --audiodev -2
+python3 test_tx.py --mode datac0 --frames 2 --bursts 3 --audiodev -2
 wait ${rx_pid}