APM Quality Assessment tool, environmental noise generator

webrtc/modules/audio_processing/test/py_quality_assessment/apm_quality_assessment.sh

 #!/bin/bash

[peah-webrtc, 2017/04/03 12:15:55]

Would it not be possible to do this as well in python instead of in bash? That
would not require users to both have bash and python installed.

[AleBzk, 2017/04/03 13:41:25]

Well, this is meant to be a sample bash script to easily run in parallel the APM
QA tool.
In bash, I can just use a for loop, the ampersand and the wait command.
Parallelizing in Python requires instead much more code and the performance may
not be exactly the same as bash background processing (read the first lines at
https://wiki.python.org/moin/GlobalInterpreterLock).

We can safely assume that everyone has bash.

 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 # Customize probing signals, noise sources and scores if needed.
 PROBING_SIGNALS=(probing_signals/*.wav)
 NOISE_SOURCES=( \
     "identity" \
     "white" \
     "environmental" \
     "echo" \
 )
 SCORES=( \
     "polqa" \
     "audio_level" \
 )
 OUTPUT_PATH=output
 
 # Generate standard APM config files.
-chmod +x apm_quality_assessment-gencfgs.py
-./apm_quality_assessment-gencfgs.py
+chmod +x apm_quality_assessment_gencfgs.py
+./apm_quality_assessment_gencfgs.py
 
 # Customize APM configurations if needed.
 APM_CONFIGS=(apm_configs/*.json)
 
 # Add output path if missing.
 if [ ! -d ${OUTPUT_PATH} ]; then
   mkdir ${OUTPUT_PATH}
 fi
 
 # Start one process for each "probing signal"-"noise source" pair.
@@ skipping 12 matching lines @@
         -n ${noise_source_name} \
         -c "${APM_CONFIGS[@]}" \
         -e "${SCORES[@]}" > $LOG_FILE 2>&1 &
   done
 done
 
 # Join.
 wait
 
 # Export results.
-chmod +x ./apm_quality_assessment-export.py
-./apm_quality_assessment-export.py -o ${OUTPUT_PATH}
+chmod +x ./apm_quality_assessment_export.py
+./apm_quality_assessment_export.py -o ${OUTPUT_PATH}
 
 # Show results in the browser.
 RESULTS_FILE="$(realpath ${OUTPUT_PATH}/results.html)"
 sensible-browser "file://${RESULTS_FILE}" > /dev/null 2>&1 &