add streaming chunk,test=doc

speechx/examples/ds2_ol/websocket/websocket_client.sh

@@ -32,4 +32,4 @@ export GLOG_logtostderr=1
 
 # websocket client
 websocket_client_main \
-    --wav_rspecifier=scp:$data/$aishell_wav_scp
+    --wav_rspecifier=scp:$data/$aishell_wav_scp --streaming_chunk=0.5

speechx/speechx/decoder/recognizer_main.cc

@@ -19,6 +19,7 @@
 
 DEFINE_string(wav_rspecifier, "", "test feature rspecifier");
 DEFINE_string(result_wspecifier, "", "test result wspecifier");
+DEFINE_double(streaming_chunk, 0.36, "streaming feature chunk size");
 DEFINE_int32(sample_rate, 16000, "sample rate");
 
 int main(int argc, char* argv[]) {
@@ -33,7 +34,7 @@ int main(int argc, char* argv[]) {
     kaldi::TokenWriter result_writer(FLAGS_result_wspecifier);
 
     int sample_rate = FLAGS_sample_rate;
-    float streaming_chunk = 0.1;
+    float streaming_chunk = FLAGS_streaming_chunk;
     int chunk_sample_size = streaming_chunk * sample_rate;
     LOG(INFO) << "sr: " << sample_rate;
     LOG(INFO) << "chunk size (s): " << streaming_chunk;