从XNA迁移至MonoGame后2D游戏3D音频失效求助

将2D游戏从XNA 4.0移植到MonoGame 3.7.1（DesktopGL平台，基于.NET Framework 4.8）后，出现3D音频空间定位失效问题：XNA版本中可正常体现声音的空间位置，但MonoGame版本里所有声音均似乎来自中心位置。

相关代码在两个版本中完全一致：

public void setSound(SoundEffectInstance sound, object owner, AudioListener listener, AudioEmitter emitter, double startTime, bool looping = false, float volumeModifier = 1)
{
    currentSound = sound;
    soundOwner = owner;
    startTimeOfCurrentSound = startTime;
    initialVolume = MathHelper.Clamp(AudioSettings.SFX_VOLUME * volumeModifier, 0, 1);
    targetVolume = initialVolume;
    transitionStartVolume = initialVolume;
    currentSound.Volume = targetVolume;
    currentSound.IsLooped = looping;
    
    if (listener != null && emitter != null)
    {
        if (Vector3.Distance(listener.Position, emitter.Position) > MIN_DISTANCE_SCREEN_UNITS)
        {
            currentSound.Apply3D(listener, emitter);
            //Console.WriteLine("over threshold! listener = " + listener.Position + ", emitter = " + emitter.Position + ", distance = " + Vector3.Distance(listener.Position, emitter.Position));
        }
        else
        {
            Vector3 savedPosition = emitter.Position;
            emitter.Position = new Vector3(listener.Position.X, listener.Position.Y, ConvertUnits.ToDisplayUnits(5));
            currentSound.Apply3D(listener, emitter);
            //Console.WriteLine("under threshold! listener = " + listener.Position + ", emitter = " + emitter.Position + ", distance = " + Vector3.Distance(listener.Position, emitter.Position));
            emitter.Position = savedPosition;
        }
    }
    currentSound.Play();
}

验证信息 #

• 代码中的if分支逻辑正常，仅在符合条件时进入else分支（最小距离阈值内扁平化声音）
• 通过调试器和控制台输出验证了传入的listener、emitter位置及距离数值均符合预期，示例输出如下：

SFX to be played: audio/sfx/environment/sfx_enemy_alert
over threshold! listener = {X:19 Y:182,8 Z:0}, emitter = {X:115,5864 Y:147,08 Z:0}, distance = 102,9799
SFX to be played: audio/sfx/wpn/sfx_gun_shot_001
under threshold! listener = {X:19 Y:148,08 Z:0}, emitter = {X:19 Y:148,08 Z:80}, distance = 80
SFX to be played: audio/sfx/characters/generic/sfx_bullethit
over threshold! listener = {X:19 Y:160,3001 Z:0}, emitter = {X:115,5864 Y:147,08 Z:0}, distance = 97,48696
SFX to be played: audio/sfx/wpn/sfx_gun_shot_002
over threshold! listener = {X:19 Y:195,0798 Z:0}, emitter = {X:104,25 Y:140 Z:0}, distance = 101,4956

已尝试的解决措施 #

• 设置SoundEffect.DistanceScale为100，同时测试了0.00001到100000之间的多个值，均无改善
• 确认音效文件为单声道（1通道48kHz的.ogg格式），符合MonoGame对3D音频的要求（XNA无此限制）
• 网传距离超过100单位可能存在缩放问题，尝试缩小所有位置数值，无变化

恳请各位提供解决思路或方案，感谢！

内容的提问来源于stack exchange，提问作者MrJ