Add comments in OpenAiAudioSpeechModel

* Add comments in OpenAiAudioSpeechModel like OpenAiChatModel

* Remove duplicated word in OpenAiAudioSpeechOptions AudioResponseFormat comment

models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioSpeechModel.java

@@ -41,23 +41,37 @@
  * OpenAI audio speech client implementation for backed by {@link OpenAiAudioApi}.
  *
  * @author Ahmed Yousri
+ * @author Hyunjoon Choi
  * @see OpenAiAudioApi
  * @since 1.0.0-M1
  */
 public class OpenAiAudioSpeechModel implements SpeechModel, StreamingSpeechModel {
 
 	private final Logger logger = LoggerFactory.getLogger(getClass());
 
+	/**
+	 * The default options used for the audio completion requests.
+	 */
 	private final OpenAiAudioSpeechOptions defaultOptions;
 
+	/**
+	 * The speed of the default voice synthesis.
+	 * @see OpenAiAudioSpeechOptions
+	 */
 	private static final Float SPEED = 1.0f;
 
+	/**
+	 * The retry template used to retry the OpenAI Audio API calls.
+	 */
 	public final RetryTemplate retryTemplate = RetryTemplate.builder()
 		.maxAttempts(10)
 		.retryOn(OpenAiApiException.class)
 		.exponentialBackoff(Duration.ofMillis(2000), 5, Duration.ofMillis(3 * 60000))
 		.build();
 
+	/**
+	 * Low-level access to the OpenAI Audio API.
+	 */
 	private final OpenAiAudioApi audioApi;
 
 	/**

models/spring-ai-openai/src/main/java/org/springframework/ai/openai/OpenAiAudioSpeechOptions.java

@@ -26,6 +26,7 @@
  * Options for OpenAI text to audio - speech synthesis.
  *
  * @author Ahmed Yousri
+ * @author Hyunjoon Choi
  * @since 1.0.0-M1
  */
 @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -53,7 +54,7 @@ public class OpenAiAudioSpeechOptions implements ModelOptions {
 
 	/**
 	 * The format of the audio output. Supported formats are mp3, opus, aac, and flac.
-	 * Defaults to mp3. Defaults to mp3
+	 * Defaults to mp3.
 	 */
 	@JsonProperty("response_format")
 	private AudioResponseFormat responseFormat;