update language via property to avoid model reload

app.py

@@ -6,7 +6,6 @@ from zerovox.tts.synthesize import ZeroVoxTTS
 from zerovox.g2p.g2p import DEFAULT_G2P_MODEL_NAME_DE, DEFAULT_G2P_MODEL_NAME_EN
 
 SAMPLE_RATE=24000 # FIXME
-TTS_MODEL_NAME='tts_en_de_zerovox_alpha1'
 
 if "text" not in st.session_state:
     st.session_state.text = "Welcome to the world of speech synthesis!"
@@ -34,8 +33,12 @@ def do_synth():
     if 'synth' in st.session_state:
         synth = st.session_state.synth
 
-        if synth.language != lang or synth.meldec_model != st.session_state['meldec']:
+        if synth.meldec_model != st.session_state['meldec']:
             synth = None # trigger reload
+        else:
+            if synth.language != lang:
+                status.update(label=f"loading the lexicon for {lang} ...", state="running")
+                synth.language = lang
 
     if not synth:
 
@@ -43,7 +46,7 @@ def do_synth():
 
         g2p_model = DEFAULT_G2P_MODEL_NAME_DE if lang=='de' else DEFAULT_G2P_MODEL_NAME_EN
 
-        st.session_state.modelcfg, st.session_state.synth = ZeroVoxTTS.load_model(TTS_MODEL_NAME,
+        st.session_state.modelcfg, st.session_state.synth = ZeroVoxTTS.load_model(ZeroVoxTTS.get_default_model(),
                                                                                   g2p=g2p_model,
                                                                                   lang=lang,
                                                                                   meldec_model=st.session_state['meldec'],

requirements.txt

@@ -1 +1 @@
-zerovox>=0.0.14
+zerovox>=0.0.15