Sound

1
Sound

• DirectMusic DirectSound

2
Sound Formats

• Wav
• Midi (Musical Instrument Digital Interface)
• DLS (Downloadable Sounds)
• DirectMusic Producer Segments
• Loader for new formats

3
DirectMusic vs DirectSound

• DirectMusic more oriented to high level playing
  of arrangements and compositional effects (MIDI,
  DLS)
• DirectSound has sound recording and low level
  buffer operations (full duplex capabilities)

4
Playing Audio Files

• Initialize create instances of the loader, the
  performance, and initialize the performance
• Load a File load the file and get an interface
  to that interface (segment)
• Play the File download all kind of settings from
  the segment to the performance, and play the
  segment
• Close Down close all the stuf

5
SoundData Flow
6
SoundInput
7
SoundInternal
8
SoundOutput
9
Elements of a DirectMusic Application

• Key concepts and code objects of DirectMusic
• Loader
• Segments and Segment States
• Performance
• Messages
• Performance Channels
• Downloadable Sounds
• Instruments and Downloading
• Audio paths and Buffers
• Audio Scripts

10
SoundData Flow

• Key concepts and code objects
• Loader
• Segments and Segment States
• Performance
• Messages
• Performance Channels
• Downloadable Sounds
• Instruments and Downloading
• Audio paths and Buffers
• Audio Scripts

11
Assignments (Problems)

• 1,3, and 5 add before the includes of dmusici.h
  and dmusicc.h
• typedef unsigned long DWORD
• typedef DWORD DWORD_PTR
• Assignment 2 has compilation errors that we have
  to solve, so do not compile yet, but browse
  through the code only. Look at the MMP2003
  web-page tomorrow for an update on this!