33.6. Choosing an Audio Format Which audio format or system you choose depends on your communication goals, the scale of your site, and your budget. Table 33-1 provides suggestions for some common scenarios. Consider them only as starting points for researching the solution that best meets your needs. Table 33-1. Suggested audio formatsAudio needs | Suggested formats |
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Short voice greetings | QuickTime (via regular HTTP server), MP3, AAC | Narration (news broadcasts, interviews, and other voice-only content) | Streaming solutions such as RealAudio, Windows Media, or QuickTime for large audiences; RealAudio or QuickTime via HTTP server for limited traffic and few simultaneous listeners | Background music (ambient sound loops) | MIDI, WAV | Short interactive sound effects (such as button rollover and transition sounds) | Flash | Music samples for a limited audience | MP3, AAC, RealMedia, or QuickTime via HTTP server | Music samples for a large-scale site with heavy traffic | Complete streaming solution, such as Real Helix or Windows Streaming Media | Radio-style music broadcasting | Real Helix, streaming MP3s (via a streaming server such as SHOUTcast), Windows Media System | Distribution and sale of CD-quality audio | MP3, AAC | Live broadcasting | Real Helix, QuickTime, Windows Media System | Musical e-greeting card | Flash, MIDI or WAV background sound | Specialized audio applications (such as virtual CD players, mixers, etc.) | Flash, QuickTime |
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