Take the mbrola voice sample rate from the mbrola wav file.

src/synth_mbrola.cpp

 static int mbrola_control = 0;
 static int mbr_name_prefix = 0;
 
-espeak_ERROR LoadMbrolaTable(const char *mbrola_voice, const char *phtrans, int srate)
+espeak_ERROR LoadMbrolaTable(const char *mbrola_voice, const char *phtrans, int *srate)
 {//===================================================================================
 // Load a phoneme name translation table from espeak-data/mbrola
 
 	fclose(f_in);
 
 	setVolumeRatio_MBR((float)(mbrola_control & 0xff) /16.0f);
-//	srate = getFreq_MBR();
+	samplerate = *srate = getFreq_MBR();
-	samplerate = srate;
+	if(*srate == 22050)
-	if(srate == 22050)
 		SetParameter(espeakVOICETYPE,0,0);
 	else
 		SetParameter(espeakVOICETYPE,1,0);

src/synthesize.h

 
 espeak_ERROR SetVoiceByName(const char *name);
 espeak_ERROR SetVoiceByProperties(espeak_VOICE *voice_selector);
-espeak_ERROR LoadMbrolaTable(const char *mbrola_voice, const char *phtrans, int srate);
+espeak_ERROR LoadMbrolaTable(const char *mbrola_voice, const char *phtrans, int *srate);
 void SetParameter(int parameter, int value, int relative);
 int MbrolaTranslate(PHONEME_LIST *plist, int n_phonemes, int resume, FILE *f_mbrola);
 int MbrolaGenerate(PHONEME_LIST *phoneme_list, int *n_ph, int resume);

src/voices.cpp

 
 			name2[0] = 0;
 			sscanf(p,"%s %s %d",name1,name2,&srate);
-			if(LoadMbrolaTable(name1,name2,srate) != EE_OK)
+			if(LoadMbrolaTable(name1,name2,&srate) != EE_OK)
 			{
 				fprintf(stderr,"mbrola voice not found\n");
 			}