Fix Game Blaster, PS/1 Audio & Tandy audio issues at low host sample …

…rates

Without this fix, these audio devices would fail in debug mode with an
assertion error if the host sample rate is between 16001 and 16059 Hz
(inclusive), and there is no sound if the host rate is 16000 Hz or
lower.

Most importantly, limiting the "highest accurate frequency" parameter
(`max_rate_hz` in the code) to at least 8000 Hz makes no sense at 16 kHz
or lower host rates.

src/hardware/gameblaster.cpp

@@ -124,7 +124,7 @@ void GameBlaster::Open(const int port_choice, const std::string &card_choice,
 
 	// Set up the resampler to convert from the render rate to the mixer's
 	// frame rate
-	const auto max_rate_hz = std::max(sample_rate_hz * 0.9 / 2, 8000.0);
+	const auto max_rate_hz = sample_rate_hz * 0.9 / 2;
 	for (auto& r : resamplers) {
 		r.reset(reSIDfp::TwoPassSincResampler::create(render_rate_hz,
 		                                              sample_rate_hz,

src/hardware/ps1audio.cpp

@@ -451,7 +451,7 @@ Ps1Synth::Ps1Synth(const std::string& filter_choice)
 
 	// Setup the resampler
 	const auto channel_rate_hz = channel->GetSampleRate();
-	const auto max_rate_hz = std::max(channel_rate_hz * 0.9 / 2, 8000.0);
+	const auto max_rate_hz = channel_rate_hz * 0.9 / 2;
 	resampler.reset(reSIDfp::TwoPassSincResampler::create(render_rate_hz,
 	                                                      channel_rate_hz,
 	                                                      max_rate_hz));

src/hardware/tandy_sound.cpp

@@ -509,7 +509,7 @@ TandyPSG::TandyPSG(const ConfigProfile config_profile, const bool is_dac_enabled
 	// Set up the resampler
 	const auto sample_rate_hz = channel->GetSampleRate();
 
-	const auto max_rate_hz = std::max(sample_rate_hz * 0.9 / 2, 8000.0);
+	const auto max_rate_hz = sample_rate_hz * 0.9 / 2;
 
 	resampler.reset(reSIDfp::TwoPassSincResampler::create(render_rate_hz,
 	                                                      sample_rate_hz,