Controlling Sound Using Playback Parameters

The user can change the sound in real-time by using playback (effect) parameters such as volume and filters.

Playback parameters

• Volume
• Pitch
• Pan
• Bandpass filter
• Biquad filter
• Envelope
• Panning
• DSP bus send level

The sound designer can configure the playback parameters using the authoring tool.
When the programmer plays back the sound using a Cue, it is played back using the playback parameters configured by the sound designer.

The programmer can change the playback parameters relative to those configured by the sound designer.
The programmer can set the playback parameters before or during playback.
Since the player handle can play back multiple sounds simultaneously, parameters can be changed simultaneously for all sounds, or independently for each sound.

(1) Changing the volume

/* Set the volume */
criAtomExPlayer_SetVolume(player, 0.5f);
/* Start playback (using a volume of 0.5) */
criAtomExPlayer_Start(player);

(2) Changing the volume and the pitch

/* Start playback (volume: 1.0, pitch: 0 cent) */
criAtomExPlayer_Start(player);
            :
            :
/* Set the volume */
criAtomExPlayer_SetVolume(player, 0.5f);
/* Set the pitch */
criAtomExPlayer_SetPitch(player, 100.0f);
/* Apply the changes (volume is changed to 0.5 and pitch is changed to +100 cent) */
criAtomExPlayer_UpdateAll(player);

(3) Changing the parameters of the specified playback ID

/* Start playback (volume: 1.0, pitch: 0 cent) */
id1 = criAtomExPlayer_Start(player);
id2 = criAtomExPlayer_Start(player);
            :
            :
/* Set the volume */
criAtomExPlayer_SetVolume(player, 0.5f);
/* Set the pitch */
criAtomExPlayer_SetPitch(player, 100.0f);
/* Apply the changes (volume is changed to 0.5 and pitch is changed to +100 cent only for the sound of id2) */
criAtomExPlayer_Update(player, id2);

By using "AISAC", the user can change multiple parameters as a single change.
For details, see AISAC Interactive Sound System "AISAC" .

Next:Sequence