---
source_path: "api/sample/java/evalUDT.md"
canonical_url: "https://doc.sensory.com/tnl/7.8/api/sample/java/evalUDT/"
---

# evalUDT.java

This example shows how to run a wake word recognizer. It uses the UDT phrase
enrolled with [enrollUDT.java](https://doc.sensory.com/tnl/7.8/api/sample/java/enrollUDT.md#enrolludtjava).

## Instructions

Enroll a custom wake word as outlined in [enrollUDT.java](https://doc.sensory.com/tnl/7.8/api/sample/java/enrollUDT.md#enrolludt-instructions).

Open a terminal window and enter the commands after the `%` prompt below
(on Windows, replace `./gradlew` with `gradlew.bat`).
 Speak when prompted.
Stop the process with `^C` when you're done.

```console
% cd ~/Sensory/TrulyNaturalSDK/7.9.0-pre.0/sample/java/enroll-udt/
% ./gradlew -q --console=plain eval
Say your enrolled phrase.
#00 "custom-phrase", score = 0.700
  [2505 ms, 3480 ms] custom-phrase

#01 "custom-phrase", score = 0.636
  [6660 ms, 7425 ms] custom-phrase

#02 "custom-phrase", score = 0.668
  [11475 ms, 12525 ms] custom-phrase

Recording:  14.50
^C
```

## Code

Available in this TrulyNatural SDK installation at
_~/Sensory/TrulyNaturalSDK/7.9.0-pre.0/sample/java/enroll-udt/src/main/java/com/sensory/speech/snsr/demo/enroll-udt/evalUDT.java_

**evalUDT.java:**

```java
/* Sensory Confidential
 * Copyright (C)2016-2026 Sensory, Inc. https://sensory.com/
 *
 * Command-line phrase spotter.
 *------------------------------------------------------------------------------
 */

import java.io.Console;
import java.io.File;
import java.io.IOException;

import com.sensory.speech.snsr.Snsr;
import com.sensory.speech.snsr.SnsrRC;
import com.sensory.speech.snsr.SnsrSession;
import com.sensory.speech.snsr.SnsrStream;

import enroll.BuildConfig;

public class evalUDT {
  public static void main(String argv[]) {
    final int TIMEOUT = 60;
    final int SAMPLE_RATE = 16000;

    // Check whether the enrolled spotter model exists
    if (!(new File(BuildConfig.ENROLLED_MODEL).exists())) {
      System.out.println("Enrollment model file " + BuildConfig.ENROLLED_MODEL);
      System.out.println("was not found. Please enroll a phrase by running:" +
          "./gradlew -q enroll");
      System.exit(1);
    }

    // Holder for the number of spots encountered so far
    final int[] spotCount = new int[1];

    // Spot from live audio
    SnsrStream audio = SnsrStream.fromAudioDevice();

    // Primary TrulyHandsfree session handle
    SnsrSession s = new SnsrSession();
    try {
      s.load(BuildConfig.ENROLLED_MODEL);
    } catch (IOException e) {
      e.printStackTrace();
      System.exit(3);
    }

    s.require(Snsr.TASK_TYPE, Snsr.PHRASESPOT)
        // .setDouble(Snsr.SV_THRESHOLD, 0.1) // test - override default
        .setStream(Snsr.SOURCE_AUDIO_PCM, audio)
        // Show the duration of processed audio,
        // and stop after TIMEOUT seconds
        .setHandler(Snsr.SAMPLES_EVENT, (ses, key) -> {
          double count = ses.getDouble(Snsr.RES_SAMPLES);
          System.out.print(String.format("\rRecording: %6.2f s",
              count / SAMPLE_RATE));
          if (count < SAMPLE_RATE * TIMEOUT)
            return SnsrRC.OK;
          return SnsrRC.TIMED_OUT;
        })
        // Phrase spot event. Show speaker verification score and alignments.
        .setHandler(Snsr.RESULT_EVENT, (ses, key) -> {
          System.out.println(String.format("\r#%02d \"%s\", score = %.3f",
              spotCount[0]++,
              ses.getString("text"),
              ses.getDouble("sv-score")));
          // Replace Snsr.WORD_LIST with Snsr.PHONE_LIST to show phonemes
          ses.forEach(Snsr.WORD_LIST, (s2, key2) -> {
            System.out.println(String.format("  [%.0f ms, %.0f ms] %s",
                s2.getDouble(Snsr.RES_BEGIN_MS),
                s2.getDouble(Snsr.RES_END_MS),
                s2.getString(Snsr.RES_TEXT)));
            return SnsrRC.OK;
          });
          System.out.println("");
          return SnsrRC.OK;
        });

    // Show an SDK license expiration warning, if needed
    final String licenseWarning = s.getString(Snsr.LICENSE_WARNING);
    if (licenseWarning != null)
      System.out.println(licenseWarning);

    System.out.println("Say your enrolled phrase.");
    try {
      s.run();
      s.release();
      audio.release();
    } catch (IOException e) {
      e.printStackTrace();
    }
    System.out.println("\nDone.");
  }
}

```

<!-- Abbreviation definitions from includes/abbreviations.md -->
*[API]: Application Programming Interface
*[SDK]: Software Development Kit
*[TNL]: TrulyNatural, Sensory's large-vocabulary speech recognition technology
*[UDT]: User-Defined Trigger: enrolled wake words and command sets