# LocalAudioStats (/zh-CN/api-reference/rtc/flutter/class-localaudiostats)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

<a id="class_localaudiostats__prototype"></a>

```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);
}
```

<a id="class_localaudiostats__parameters"></a>

## 属性 [#属性]

<ParameterList>
<a id="numchannels"></a>
<Parameter name="numChannels">

声道数。

</Parameter>
<a id="sentsamplerate"></a>
<Parameter name="sentSampleRate">

发送本地音频的采样率，单位为 Hz。

</Parameter>
<a id="sentbitrate"></a>
<Parameter name="sentBitrate">

发送本地音频的码率平均值，单位为 Kbps。

</Parameter>
<a id="txpacketlossrate"></a>
<Parameter name="txPacketLossRate">

弱网对抗前本端到声网边缘服务器的丢包率 (%)。

</Parameter>
<a id="internalcodec"></a>
<Parameter name="internalCodec">

内部的 payload 类型。

</Parameter>
<a id="audiodevicedelay"></a>
<Parameter name="audioDeviceDelay">

播放或录制音频时，音频设备模块的延迟 (ms)。

</Parameter>
<a id="earmonitordelay"></a>
<Parameter name="earMonitorDelay">

耳返延迟 (ms)，即声音从麦克风输入到耳机输出的延迟。

</Parameter>
<a id="aecestimateddelay"></a>
<Parameter name="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。

</Parameter>
</ParameterList>