TeaSpeak
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TeaWeb
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improving the vad filter

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WolverinDEV 2019-06-20 11:52:33 +02:00
parent c5a9f266fd
commit 395eff3b8e
3 changed files with 32 additions and 4 deletions
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6
shared/js/voice/RecorderBase.ts
View File

@ -54,6 +54,12 @@ namespace audio {
get_threshold() : number;
set_threshold(value: number) : Promise<void>;
get_attack_smooth() : number;
get_release_smooth() : number;
set_attack_smooth(value: number);
set_release_smooth(value: number);
callback_level?: (value: number) => any;
}

4
shared/js/voice/RecorderProfile.ts
View File

@ -167,6 +167,10 @@ class RecorderProfile {
if(this.config.vad_type === "threshold") {
const filter = this.input.get_filter(audio.recorder.filter.Type.THRESHOLD) as audio.recorder.filter.ThresholdFilter;
await filter.set_threshold(this.config.vad_threshold.threshold);
await filter.set_margin_frames(10); /* 500ms */
filter.set_attack_smooth(.25);
filter.set_release_smooth(.9);
this.input.enable_filter(audio.recorder.filter.Type.THRESHOLD);
} else if(this.config.vad_type === "push_to_talk") {

26
web/js/voice/JavascriptRecorder.ts
View File

@ -90,6 +90,10 @@ namespace audio {
private _silence_count = 0;
private _margin_frames = 5;
private _current_level = 0;
private _smooth_release = 0;
private _smooth_attack = 0;
finalize() {
clearInterval(this._update_task);
this._update_task = 0;
@ -159,8 +163,25 @@ namespace audio {
level = 100 + ( db * 1.92 );
}
{
const last_level = this._current_level;
let smooth;
if(this._silence_count == 0)
smooth = this._smooth_release;
else
smooth = this._smooth_attack;
this._current_level = last_level * smooth + level * (1 - smooth);
}
this._update_gain_node();
if(this.callback_level)
this.callback_level(this._current_level);
}
private _update_gain_node() {
let state = false;
if(level > this._threshold) {
if(this._current_level > this._threshold) {
this._silence_count = 0;
state = true;
} else {
@ -179,9 +200,6 @@ namespace audio {
this.callback_active_change(true);
}
}
if(this.callback_level)
this.callback_level(level);
}
}