TTS未設置Pitch和SpeechRate的值

Question

Android TTS：如果字符串長度大於4000，爲什麼不爲Pitch，SpeechRate設置值？

Thanx in advanced，

Answer 1

這不僅僅是音調和比率被拒絕。如果文本長度大於4000個字符，TTS請求將被完全拒絕。

看到MAX_SPEECH_ITEM_CHAR_LENGTH在這個摘自Android source：

public abstract class TextToSpeechService extends Service { 

    private static final boolean DBG = false; 
    private static final String TAG = "TextToSpeechService"; 

    private static final int MAX_SPEECH_ITEM_CHAR_LENGTH = 4000;