diff --git a/vall_e.cpp/vall_e.cpp b/vall_e.cpp/vall_e.cpp
index 96007d2..90ee430 100644
--- a/vall_e.cpp/vall_e.cpp
+++ b/vall_e.cpp/vall_e.cpp
@@ -260,7 +260,7 @@ const int INFERENCE_MODE_NAR = 4;
 const int MODALITY_AR_NAR = 0;
 const int MODALITY_NAR_LEN = 0;
 
-const int MAX_DURATION = 75 * 12;
+const int MAX_DURATION = 75; // * 12;
 
 // sums embeddings over a 2D "tensor"
 std::vector<std::vector<float>> sum_embeddings( const std::vector<std::vector<llama_token>>& input, int n_embd, int rvq_l, float** embds, int mode = EMBEDDING_MODE_PROM ) {
@@ -417,7 +417,8 @@ std::vector<llama_token> generate( llama_context* ctx, llama_model* model, llama
 			if ( verbose ) {
 				// print token for debugging
 				char buf[256];
-				llama_token_to_piece( model, t, buf, sizeof(buf), 0, true );
+				int n = llama_token_to_piece( model, t, buf, sizeof(buf), 0, true );
+				if ( n < 256 ) buf[n] = '\0';
 				printf("%s\n", buf );
 			}
 
@@ -459,9 +460,9 @@ int main(int argc, char ** argv) {
 	input_t input{};
 	embeddings_t embeddings_map{};
 
-	input.phonemes = {1,85,4,128,26,4,186,4,89,33,25,4,48,4,134,25,52,86,4,34,97,27,11,2};
+	input.phonemes = {1,85,4,128,26,4,186,4,89,33,25,4,48,4,134,25,52,86,4,34,97,27,11,2}; // <bos>hˈɛloː ʋˈɔrlt</eos>
 
-	std::string vall_e_model_path = "./data/vall_e-q8_0.gguf";
+	std::string vall_e_model_path = "./data/vall_e-F16.gguf";
 	std::string encodec_model_path = "./data/encodec.bin";
 	std::string input_prompt_path = "./data/prom.wav";
 	std::string output_response_path = "./data/resp.wav";
@@ -496,6 +497,7 @@ int main(int argc, char ** argv) {
 	llama_context_params ctx_params = llama_context_default_params();
 	ctx_params.n_ctx = 22500;
 	ctx_params.n_batch = 22500;
+	ctx_params.n_ubatch = 22500;
 	ctx_params.no_perf = false;
 	ctx_params.attention_type = LLAMA_ATTENTION_TYPE_CAUSAL; 
 
@@ -548,7 +550,7 @@ int main(int argc, char ** argv) {
 			}
 		}
 		// cap for now
-		if ( len > MAX_DURATION ) len = MAX_DURATION;
+		if ( len <= 0 || len > MAX_DURATION ) len = MAX_DURATION;
 
 		// fill with mask tokens
 		input.resp.resize(1);