Test: match Linux and macOS requested latency to Windows.

src/audio/MacAudioDevice.mm

@@ -46,7 +46,7 @@ thread_local int MacAudioDevice::CurrentCoreAudioId_ = 0;
 constexpr static double kOneNanosecond = 1.0e9;
 
 // The I/O interval time in seconds.
-constexpr static double AUDIO_SAMPLE_BLOCK_SEC = 0.010;
+constexpr static double AUDIO_SAMPLE_BLOCK_SEC = 0.020;
 
 static OSStatus GetIOBufferFrameSizeRange(AudioObjectID inDeviceID,
                                           UInt32* outMinimum,

src/audio/PulseAudioDevice.cpp

@@ -39,7 +39,7 @@ using namespace std::chrono_literals;
 
 // Target latency. This controls e.g. how long it takes for
 // TX audio to reach the radio.
-#define PULSE_TARGET_LATENCY_US 10000
+#define PULSE_TARGET_LATENCY_US 20000
 
 thread_local std::chrono::high_resolution_clock::time_point PulseAudioDevice::StartTime_;
 thread_local bool PulseAudioDevice::MustStopWork_ = false;