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2009-03-25

音周りで試行錯誤の結果

| 03:28 | 音周りで試行錯誤の結果 - iPhone開発放り投げ日記 を含むブックマーク はてなブックマーク - 音周りで試行錯誤の結果 - iPhone開発放り投げ日記

BGMはAVAudioPlayer,SEOpenALを使うのが良いという結論に達する。

AudioQueueはダメだ。なんかいろいろと。

paellapaella2009/04/02 10:27もしよければBGMとSEとでそれぞれAVAudioPlayerとOpenALを使うようにした理由を教えていただけませんか?
特にSEでOpenALを使う理由が知りたいです。
私はBGM,SE共にAVAudioPlayerを使っているので・・・

marukun700marukun7002009/04/02 14:25組み方にもよるかと思いますが、自分がやったときにはSE再生の時、ちょっと引っかかるどうな動作になってしまいました。
まぁ許容範囲かと思っていたら、3.0βで動作が挙動不審になりました。ガベージコレクションのように、一定期間ごとに止まるようになってしまったのです。
これが切っ掛けでOpenALに差し替えて、問題なくなりました。
組み方によってはAVAudioPlayerでも問題が出ないのかもしれませんが、自分のスキルでは解決できなかったので……。
ご参考になれば幸いです。

paellapaella2009/04/02 16:48ありがとうございます。そうですか、SEに求められる特性(応答性、即時性)をあまり備えていないんですね。しかも・・・(NDAにつき省略)では確かに厳しいです。

とても参考になる情報です。
OpenALは見ないふりをしていたのですが、そうもいかないですね。

marukun700marukun7002009/04/02 17:02補足になりますが、Apple公式サンプルの「oalTouch」がわりとシンプルな作りで参考になると思います。ご参考になれば幸いです。
「3.0βで作ってたプログラムの動作がおかしくなった」というのは言っちゃいけないんでしょうかね(汗 どこまで話していいのか判断がつきにくいので、悩むところです……

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