| カテゴリ | 重要度 | ステータス | 解決状況 | 登録日時 | 最終更新 |
|---|---|---|---|---|---|
 サウンド | 中 | 解決済み | 修正済み | 2025-07-10 22:17 | 2026-03-12 06:34 |
| テスター | hap | 担当者 | hap | ソース | |
| バージョン | 0.278 | 発生バージョン | 0.278 | 修正バージョン | 0.287 |
| 修正コミット | 967f363 | プルリク | |||
| フラグ | 再発 | ||||
| セット | |||||
| セット詳細 | |||||
| 概 要 | バッファの同期が不安定。ステートセーブロード後や早送り後に20ms置きにノイズが出る。 | ||||
| 詳 細 | Sound module abuffer ( https://github.com/mamedev/mame/blob/master/src/osd/modules/sound/sound_module.cpp ) has desync issues. If a desync happens, for example after save/loadstate, or after resuming after pressing fast forward, the sound will crackle every 20ms, and it will have trouble restabilizing. It is deliberate, see: // If there are too many buffers, remove five samples per buffer // to slowly resync to reduce latency (4 seconds to // compensate one buffer, roughly) So, it will crackle for 4 seconds per buffer, which is already annoying. But even after that, it hovers over the number of buffers limit occasionally, and you'll still get sound crackling. abuffer is used in: File modules\sound\coreaudio_sound.cpp File modules\sound\pa_sound.cpp File modules\sound\pipewire_sound.cpp File modules\sound\pulse_sound.cpp File modules\sound\sdl_sound.cpp File modules\sound\wasapi_sound.cpp File modules\sound\xaudio2_sound.cpp | ||||
| 再現手順 | Run a game with clear simple sound, such as pacman. Briefly press INS (the fast forward key) to force a desync. Listen to sound crackling. Note: to force it to resync cleanly and get rid of the sound crackling, simply pause and unpause. | ||||
| 追加情報 | |||||
| 添付ファイル |  279_pacman_glitchy.mp3 (2025-08-11 19:12) | ||||
 canonv20.png (2025-08-11 19:13) | |||||
| 279_square_toneladder_glitchy.mp3 (2025-08-11 19:13) | |||||
| 279_square_toneladder_wavwrite_ok.mp3 (2025-08-11 19:13) | |||||