EstimateSpeakerThreshold

Calculates the threshold that is necessary to distinguish between a specified speaker and an unknown speaker.

NOTE:

You only need to run this action if the audio you want to process contains unknown speakers.

Before running this action:

For more information about training speaker identification, refer to the Media Server Administration Guide.

Type: synchronous

Parameter Description Required
bias The bias to use when calculating the threshold, as a number from 0 to 1. The default value is 0.3 and this is suitable in most cases. Using a higher value increases the calculated threshold, which can result in fewer false positives. Using a lower value decreases the threshold, which can result in fewer missed results (better recall). No
database The name of the database that contains the speaker. Yes
identifier The identifier of the speaker to calculate the threshold for. Yes

Example

/action=EstimateSpeakerThreshold&database=news&identifier=newsreader

Response

This action is asynchronous, so Media Server always returns success accompanied by a token. You can use this token with the QueueInfo action to retrieve the status of the action:

 <autnresponse>
  <action>QUEUEINFO</action>
  <response>SUCCESS</response>
  <responsedata>
    <actions>
      <action>
        <status>Finished</status>
        <queued_time>2018-May-22 05:55:26</queued_time>
        <time_in_queue>2</time_in_queue>
        <process_start_time>2018-May-22 05:55:28</process_start_time>
        <time_processing>433</time_processing>
        <process_end_time>2018-May-22 06:02:41</process_end_time>
        <speaker>
          <bias>0.3</bias>
          <database>news</database>
          <identifier>newsreader</identifier>
          <numFiles>7</numFiles>
          <numFilesDone>7</numFilesDone>
          <precision>98.6</precision>
          <recall>100.0</recall>
          <score>99.3</score>
          <status>Finished</status>
          <threshold>34</threshold>
        </speaker>
        <token>...</token>
      </action>
    </actions>
  </responsedata>
</autnresponse>

The threshold element contains the calculated threshold.

See Also


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