rms_analysis.py : Don't crash in write_audacity_label_files() when seq.json does not exist.

rms_analysis.py

         
         
                
-def locate_peak_indexes( xV, xV_srate, eventMsL, audioFn ):
+def locate_peak_indexes( xV, xV_srate, eventMsL, audioFn="" ):
 
     pkIdxL = []
     for i, (begMs, endMs) in enumerate(eventMsL):
 
             takeDir = os.path.join(pitchDir,takeFolder)
 
+            if not os.path.isfile(os.path.join(takeDir,"seq.json")):
+                continue
+
             r = rms_analysis_main( takeDir, midi_pitch, **analysisArgsD )
 
             labelFn = os.path.join(takeDir,"audacity.txt")