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iOSサウンドTIPS
アプリサウンドの作成から再生まで
2014.05.31

田宮 宙比己

Tamiya Tokihiko
自己紹介
• 田宮 宙比己(たみや ときひこ)
• 7つのiOSアプリ
( ・✧・)/
@cocominap
作成編
• 8bitサウンド! cfxr
• 楽器音を活用! GarageBand
• 音をリッチに! Audacity
コーディング編
• ObjectAL
• 気軽にリバーブ・ピッチ変更
実践編
• アプリに導入
作成編
なぜ作るのか
• 素材集を探すのは時間がかかる
• イメージ通りの音を作れる
• 音を作るのは楽しい!
無料ソフト3本
cfxr
• 8bitサウンド生成ソフト
• 1クリックでSE完成
Audacity
• 波形編集ソフト
• 複数の波形を重ねる、ピッチを変え
る
• 簡易な編集向き
• エコーやリバーブの質は悪い
GarageBand
• 音階のついた効果音(ME)
• もちろんBGM作成にも
• 多彩なループ音
• リバーブ・エコー付けにも
1.入り口に入る
2.アタック音
3.正解・不正解
4.ボスの声
demo
コーディング編
Core Audioを構成する
フレームワーク/サービス
[iOS] iOS Core Audio 入門 # 1 概要編 | Developers.IO
http://dev.classmethod.jp/smartphone/iphone/introduction-to-coreaudio-1/
OpenAL
• 音の加工が容易
• 立体音響・リバーブ・ピッチ変更・
etc
C言語
Objective-Cっぽく

書きたい!
ObjectAL
ObjectAL
• OpenALのラッパー
• Objective-Cの文法でコーディング
• 簡単
ObjectAL
ObjectAL for iPhone and Mac
http://kstenerud.github.io/ObjectAL-for-iPhone/
http://kstenerud.github.io/ObjectAL-for-iPhone/documentation/index.html
ObjectAL: ObjectAL for iPhone
http://kstenerud.github.io/ObjectAL-for-iPhone/documentation/index.html
ObjectAL: ObjectAL for iPhone
ObjectAL
• #include ObjectAL.h"
!
!
再生
• [[OALSimpleAudio
sharedInstance]
playEffect:@ voice.wa
v ];
再生(ループ)
• [[OALSimpleAudi
o sharedInstance]
playEffect: voice.
wav loop:YES];
ピッチ/パン
• [[OALSimpleAudio
sharedInstance]
playEffect:@"voice.wa
v" volume:1.0 pitch:
0.45 pan:0 loop:NO];
リバーブ
listener & source
http://commons.wikimedia.org/wiki/File:Coord_planes_color.svg#mediaviewer/
%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB:Coord_planes_color.svg
listen
er
source
listener
• [OALSimpleAudio
sharedInstance].c
ontext.listener.re
verbOn = YES;
• [OALSimpleAudio
sharedInstance].contex
t.listener.globalReverb
Level = 10;
• [OALSimpleAudio
sharedInstance].context.li
stener.reverbRoomType
=
ALC_ASA_REVERB_ROO
M_TYPE_SmallRoom;
source
• ALSource
*source =
[[ALSource alloc]
init];
• source.reverbSendLe
vel = 1.0;
• [source queueBuffer:
[[OALSimpleAudio
sharedInstance]
preloadEffect:@"kazoerukun.
aif" reduceToMono:YES]];
• [source play];
リアルタイムに
パンの値変更
• source.pan =
_panSlider.value;
実践編
demo
ありがとうございました

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iOSサウンドTIPS〜作成から再生まで