LocalAudioStats

本地音频统计数据。

Dart

@JsonSerializable(explicitToJson: true, includeIfNull: false)
class LocalAudioStats {
  const LocalAudioStats(
      {this.numChannels,
      this.sentSampleRate,
      this.sentBitrate,
      this.internalCodec,
      this.txPacketLossRate,
      this.audioDeviceDelay,
      this.audioPlayoutDelay,
      this.earMonitorDelay,
      this.aecEstimatedDelay});
  @JsonKey(name: 'numChannels')
  final int? numChannels;
  @JsonKey(name: 'sentSampleRate')
  final int? sentSampleRate;
  @JsonKey(name: 'sentBitrate')
  final int? sentBitrate;
  @JsonKey(name: 'internalCodec')
  final int? internalCodec;
  @JsonKey(name: 'txPacketLossRate')
  final int? txPacketLossRate;
  @JsonKey(name: 'audioDeviceDelay')
  final int? audioDeviceDelay;
  @JsonKey(name: 'audioPlayoutDelay')
  final int? audioPlayoutDelay;
  @JsonKey(name: 'earMonitorDelay')
  final int? earMonitorDelay;
  @JsonKey(name: 'aecEstimatedDelay')
  final int? aecEstimatedDelay;
  factory LocalAudioStats.fromJson(Map<String, dynamic> json) =>
      _$LocalAudioStatsFromJson(json);
  Map<String, dynamic> toJson() => _$LocalAudioStatsToJson(this);
}

numChannels

声道数。

sentSampleRate

发送本地音频的采样率，单位为 Hz。

sentBitrate

发送本地音频的码率平均值，单位为 Kbps。

txPacketLossRate

弱网对抗前本端到声网边缘服务器的丢包率 (%)。

internalCodec

内部的 payload 类型。

audioDeviceDelay

播放或录制音频时，音频设备模块的延迟 (ms)。

earMonitorDelay

耳返延迟 (ms)，即声音从麦克风输入到耳机输出的延迟。

aecEstimatedDelay

回声消除延迟 (ms)，即回声消除 (Acoustic Echo Cancellation, AEC) 模块测算出音频在本地播放前与被本地采集后的信号延迟。