seqdemo

Description

This program demonstrates the use of the AX, SEQ, SYN, and AXFX libraries. This program uses the Roland GM16 wavetable and standard MIDI files.

Note: The GM16.DLS file was converted using the DLS1WT tool. The tool is included in the GCN SDK under:

/build/tools/dls1wt/

The tool basically converts a standard DLS file into an arbitrary format implemented specifically for the AX application libraries. Full source code for the tool is provided. Please refer to the "AX Applications" document for more details on the SEQ library and DLS1WT file conversion.

The Roland wavetable is also included in the SDK:

/audioData/Roland/GM16.DLS

This demo also illustrates how to implement a custom AUX bus effect. Source code for the AuxB "delay" effect is provided.

This demo also illustrates how to use the AX performance profiler.

Coverage

• AX, MIX, SYN, SEQ, initialization, setup, shutdown.
• AXFX AUX bus effects usage.
• Custom AUX effect implementation (delay.c).
• SEQ, SYN usage.
• Profiling AX performance.

Operation Method

This program provides an onscreen menu system and status displays. Use the Control Stick to toggle between menus and press the A Button to select. Note that you may select an arbitrary MIDI file to play from the current DVD root.

Required Data Files

• //axdemo/midi/*.mid
• //axdemo/synth/gm16adpcm.pcm
• //axdemo/synth/gm16adpcm.wt
• //axdemo/synth/gm16pcm.pcm
• //axdemo/synth/gm16pcm.wt

Revision History

03/01/2006 Initial version.