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Fixed bug in volume envelope (in fluid_voice_update_param(), case GEN_VOLENVDECAY):

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the minimum value was converted to linear amplitude instead of a normalized value
of the cB (1-cB/1000). Because of that, the decay section went on for too long.
This commit is contained in:
Peter Hanappe 2004-02-25 22:57:18 +00:00
parent 45ab6c3cf5
commit 154074326f
2 changed files with 6 additions and 5 deletions
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1
fluidsynth/src/fluid_cmd.c
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@ -328,7 +328,6 @@ fluid_source(fluid_cmd_handler_t* handler, char* filename)
if (file < 0) {
return file;
}
fluid_shell_init(&shell, NULL, handler, file, fluid_get_stdout());
return fluid_shell_run(&shell);
}

10
fluidsynth/src/fluid_voice.c
View file

@ -960,7 +960,7 @@ fluid_voice_calculate_runtime_synthesis_parameters(fluid_voice_t* voice)
* example, the pitch depends on GEN_COARSETUNE, GEN_FINETUNE and
* GEN_PITCH. voice->pitch. Unnecessary recalculation is avoided
* by removing all but one generator from the list of voice
* parameters. Same with GEN_XXX and GEN_XXXCOARSE: the
* parameters. Same with GEN_XXX and GEN_XXXCOARSE: the
* initialisation list contains only GEN_XXX.
*/
@ -1338,7 +1338,8 @@ fluid_voice_update_param(fluid_voice_t* voice, int gen)
case GEN_VOLENVDELAY: /* SF2.01 section 8.1.3 # 33 */
x = _GEN(voice, GEN_VOLENVDELAY);
fluid_clip(x, -12000.0f, 5000.0f);
voice->volenv_data[FLUID_VOICE_ENVDELAY].count = NUM_BUFFERS_DELAY(x);
count = NUM_BUFFERS_DELAY(x);
voice->volenv_data[FLUID_VOICE_ENVDELAY].count = count;
voice->volenv_data[FLUID_VOICE_ENVDELAY].coeff = 0.0f;
voice->volenv_data[FLUID_VOICE_ENVDELAY].incr = 0.0f;
voice->volenv_data[FLUID_VOICE_ENVDELAY].min = -1.0f;
@ -1369,12 +1370,13 @@ fluid_voice_update_param(fluid_voice_t* voice, int gen)
case GEN_VOLENVDECAY: /* SF2.01 section 8.1.3 # 36 */
case GEN_VOLENVSUSTAIN: /* SF2.01 section 8.1.3 # 37 */
case GEN_KEYTOVOLENVDECAY: /* SF2.01 section 8.1.3 # 40 */
y = 1.0f - 0.001f * _GEN(voice, GEN_VOLENVSUSTAIN);
fluid_clip(y, 0.0f, 1.0f);
count = calculate_hold_decay_buffers(voice, GEN_VOLENVDECAY, GEN_KEYTOVOLENVDECAY, 1); /* 1 for decay */
voice->volenv_data[FLUID_VOICE_ENVDECAY].count = count;
voice->volenv_data[FLUID_VOICE_ENVDECAY].coeff = 1.0f;
voice->volenv_data[FLUID_VOICE_ENVDECAY].incr = count ? -1.0f / count : 0.0f;
/* fluid_cb2amp checks the range */
voice->volenv_data[FLUID_VOICE_ENVDECAY].min = fluid_cb2amp(_GEN(voice, GEN_VOLENVSUSTAIN));
voice->volenv_data[FLUID_VOICE_ENVDECAY].min = y;
voice->volenv_data[FLUID_VOICE_ENVDECAY].max = 2.0f;
break;