ボイスチャット/カラオケアプリにおける音声配信(VoIP)技術について

// Sets the preset reverberation effect to pop music.
    mRtcEngine.setLocalVoiceReverbPreset(AUDIO_REVERB_POPULAR);
    
    // Turns off reverberation.
    mRtcEngine.setLocalVoiceReverbPreset(AUDIO_REVERB_OFF);
    
    

// Sets the pitch. The value ranges between 0.5 and 2.0. The lower the value, the lower the pitch. The default value is 1.0, which is the original pitch.
    double pitch = 0.5;
    rtcEngine.setLocalVoicePitch(pitch);
    
    // Sets the local voice equalization.
    // The first parameter sets the band frequency. The value ranges between 0 and 9. Each value represents the center frequency of the band: 31, 62, 125, 250, 500, 1k, 2k, 4k, 8k, and 16k Hz
    // The second parameter sets the gain of each band. The value ranges between -15 and 15 dB. The default value is 0.
    rtcEngine.setLocalVoiceEqualization(0, -15);
    rtcEngine.setLocalVoiceEqualization(1, 3);
    rtcEngine.setLocalVoiceEqualization(2, -9);
    rtcEngine.setLocalVoiceEqualization(3, -8);
    rtcEngine.setLocalVoiceEqualization(4, -6);
    rtcEngine.setLocalVoiceEqualization(5, -4);
    rtcEngine.setLocalVoiceEqualization(6, -3);
    rtcEngine.setLocalVoiceEqualization(7, -2);
    rtcEngine.setLocalVoiceEqualization(8, -1);
    rtcEngine.setLocalVoiceEqualization(9, 1);
    
    // The level of the dry signal in dB. The value ranges between -20 and 10.
    rtcEngine.setLocalVoiceReverb(Constants.AUDIO_REVERB_DRY_LEVEL, 10);
    
    // The level of the early reflection signal (wet signal) in dB. The value ranges between -20 and 10.
    rtcEngine.setLocalVoiceReverb(Constants.AUDIO_REVERB_WET_LEVEL, 7);
    
    // The room size of the reverberation. A larger room size means a stronger reverberation. The value ranges between 0 and 100.
    rtcEngine.setLocalVoiceReverb(Constants.AUDIO_REVERB_ROOM_SIZE, 6);
    
    // The length of the initial delay of the wet signal (ms). The value ranges between 0 and 200.
    rtcEngine.setLocalVoiceReverb(Constants.AUDIO_REVERB_WET_DELAY, 124);
    
    // The reverberation strength. The value ranges between 0 and 100. The higher the value, the stronger the reverberation.
    rtcEngine.setLocalVoiceReverb(Constants.AUDIO_REVERB_STRENGTH, 78);
    
    

var stream = AgoraRTC.createStream({
      streamID: uid,
      audio:true,
      video:false,
      screen:false
    });