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audio_renderer: Fix biquad filter

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Originally the biquad filter was disabled due to issues with crackling before.
This commit is contained in:
David Marcec
2020-09-20 13:34:46 +10:00
parent 8a85a562ed
commit 997d1e2ad9
1 changed files with 6 additions and 7 deletions
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13
src/audio_core/command_generator.cpp
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@@ -270,11 +270,9 @@ void CommandGenerator::GenerateBiquadFilterCommandForVoice(ServerVoiceInfo& voic
}
// Generate biquad filter
// GenerateBiquadFilterCommand(mix_buffer_count, biquad_filter,
// dsp_state.biquad_filter_state,
// mix_buffer_count + channel, mix_buffer_count +
// channel, worker_params.sample_count,
// voice_info.GetInParams().node_id);
GenerateBiquadFilterCommand(mix_buffer_count, biquad_filter, dsp_state.biquad_filter_state,
mix_buffer_count + channel, mix_buffer_count + channel,
worker_params.sample_count, voice_info.GetInParams().node_id);
}
}
@@ -302,8 +300,9 @@ void AudioCore::CommandGenerator::GenerateBiquadFilterCommand(
for (int i = 0; i < sample_count; ++i) {
const auto sample = static_cast<s64>(input[i]);
const auto f = (sample * n0 + s0 + 0x4000) >> 15;
const auto y = std::clamp(f, int32_min, int32_max);
const auto f = (sample * n0 + s0 + 0x2000) >> 14;
const auto y = static_cast<s64>(std::clamp(f, int32_min, int32_max));
s0 = sample * n1 + y * d0 + s1;
s1 = sample * n2 + y * d1;
output[i] = static_cast<s32>(y);