{"id":24110,"date":"2023-08-23T15:30:37","date_gmt":"2023-08-23T13:30:37","guid":{"rendered":"https:\/\/demdlx704as001.ad.harman.com\/?post_type=documentor-sections&p=24110"},"modified":"2023-12-11T11:42:19","modified_gmt":"2023-12-11T10:42:19","slug":"level-monitor-2","status":"publish","type":"post","link":"https:\/\/audioworx.transfunnel.co\/old\/?p=24110","title":{"rendered":"Level Monitor"},"content":{"rendered":"

The Level Monitor is intended to measure the level of input; the audio samples are sent to the output without modification.<\/span><\/p>\n

Use case:<\/strong> This object can be deployed in Level Monitor mode whenever there is a need to measure level of signal level and in Clip Meter mode to check if the level is causing clipping. The same input is sent as output without modification.<\/em><\/span><\/p>\n

Level Monitor Properties<\/strong><\/span><\/p>\n

Below table describes about the Level Monitor audio object properties and functionality.<\/span><\/p>\n

\"\"<\/p>\n\n\n\n\n\n\n
Properties<\/strong><\/span><\/td>\nDescriptions<\/strong><\/span><\/td>\n<\/tr>\n
# of Channels<\/strong><\/span><\/td>\nIn the Signal Flow Designer (SFD), the number of control outputs is equal to the number of audio channels. Each control output writes out the channel level\/clip indication value based on the MODE selected.<\/span><\/p>\n
    \n
  • Range: 1 to 254<\/span><\/li>\n
  • Data type: Signed Short<\/span><\/li>\n
  • The default value is set to 1.<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
Display Name<\/strong><\/span><\/td>\nDisplay name of the Level Monitor audio object in signal flow design. It can be changed based on the intended usage of the object.<\/span><\/td>\n<\/tr>\n
Object Mode<\/strong><\/span><\/td>\nDuring design time, the audio object channel can be configured in one of the two operation modes.<\/span><\/p>\n
    \n
  • Level Monitor<\/strong><\/span><\/li>\n
  • Clip Meter<\/strong><\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Mode<\/strong><\/span><\/p>\n

    During design time, the audio object can be configured in one of the two operation modes.<\/span><\/p>\n

      \n
    • Level Monitor<\/strong><\/span><\/li>\n
    • Clip Meter<\/strong><\/span><\/li>\n<\/ul>\n

      \"\"<\/p>\n\n\n\n\n\n
      Mode<\/strong><\/td>\nDescription<\/strong><\/td>\n<\/tr>\n
      Level Monitor<\/strong><\/span><\/td>\n\n

      This is the default mode.<\/span><\/p>\n

      In this mode, the signal level is measured and the value is sent to the control output.<\/span><\/td>\n<\/tr>\n

      Clip Meter<\/strong><\/span><\/td>\nIn this mode, object computes the signal level and compares it with the threshold set through the tuning parameters. A flag is set \/ reset if the signal level is above \/ below the threshold and this flag is sent to the control output.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Additional Parameters<\/strong><\/span><\/p>\n

      There are no additional parameters available for Level Monitor audio object.<\/span><\/p>\n

      Tuning Parameters<\/strong><\/span><\/p>\n

      Under Level Monitor<\/strong> mode, following are the tuning parameters available for each channel.<\/span><\/p>\n\n\n\n\n\n\n
      Parameter<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\nRange<\/strong><\/span><\/td>\nDefault<\/strong><\/span><\/td>\nData Type<\/strong><\/span><\/td>\nUnit<\/strong><\/span><\/td>\n<\/tr>\n
      LEV_MODE<\/span><\/strong><\/td>\nTo select the method of computation of input signal level<\/span><\/p>\n
        \n
      • RMS: It is the RMS value of the input signal<\/span><\/li>\n
      • Linear: It is average of the input signal<\/span><\/li>\n
      • Peak: It is the peak\/max sample value <\/span><\/li>\n<\/ul>\n

        In all the above types, the computed level is always presented in dB (logarithmic scale)<\/span><\/td>\n

      		\n

      0 – RMS<\/span><\/p>\n

      1 – LINEAR<\/span><\/p>\n

      2 – PEAK<\/span><\/td>\n

      		0<\/span><\/td>\nFloat<\/span><\/td>\nNA<\/span><\/td>\n<\/tr>\n
      DB_LEAK_PER_SEC<\/span><\/strong><\/td>\nAmount of dB drop per second in Peak Level mode.<\/span><\/td>\n1 to 60<\/span><\/td>\n30<\/span><\/td>\nFloat<\/span><\/td>\ndB<\/span><\/td>\n<\/tr>\n
      PEAK_HOLD_TIME<\/span><\/strong><\/td>\nAmount of time peak is held.<\/span><\/span><\/td>\n0 to 1<\/span><\/td>\n0.05<\/span><\/td>\nFloat<\/span><\/td>\nsecond<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Under Clip Meter<\/strong> mode, following is the tuning parameter available for each channel.<\/span><\/p>\n\n\n\n\n
      Parameter<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\nRange<\/strong><\/span><\/td>\nDefault<\/strong><\/span><\/td>\nData Type<\/strong><\/span><\/td>\nUnit<\/strong><\/span><\/td>\n<\/tr>\n
      Threshold<\/span><\/strong><\/td>\nThreshold value for the channel to treat a signal as being clipped. <\/span><\/td>\n-20 to 20<\/span><\/td>\n-0.25<\/span><\/td>\nFloat<\/span><\/td>\ndB<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      State Parameters<\/strong><\/span><\/p>\n

      Under Level Monitor<\/strong> mode, following is the state parameter available for each channel.<\/span><\/p>\n\n\n\n\n
      Parameter<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\nRange<\/strong><\/span><\/td>\nDefault<\/strong><\/span><\/td>\nData Type<\/strong><\/span><\/td>\nUnit<\/strong><\/span><\/td>\n<\/tr>\n
      LEVEL_VALUE<\/span><\/strong><\/td>\nMeasured signal level for the channel<\/span><\/td>\n-128 to 20<\/span><\/td>\n0<\/span><\/td>\nFloat<\/span><\/td>\ndB<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Under <\/span>Clip Meter<\/strong>\u00a0mode, following is the state parameter available for each channel.<\/span><\/p>\n\n\n\n\n
      Parameter<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\nRange<\/strong><\/span><\/td>\nDefault<\/strong><\/span><\/td>\nData Type<\/strong><\/span><\/td>\nUnit<\/strong><\/span><\/td>\n<\/tr>\n
      Clip Indicator<\/span><\/strong><\/td>\nClip Indicator for the channel based on the tuned threshold parameter <\/span><\/td>\n0 or 1<\/span><\/td>\n0<\/span><\/td>\nUnsigned Long<\/span><\/td>\nNone<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Control Parameters<\/strong><\/p>\n

      Under Level Monitor<\/strong> mode, following is the control output available for each channel.<\/span><\/p>\n\n\n\n\n
      Parameter<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\nRange<\/strong><\/span><\/td>\nData Type<\/strong><\/span><\/td>\nUnit<\/strong><\/span><\/td>\n<\/tr>\n
      Signal Level<\/span><\/strong><\/td>\n Measured signal level for the channel<\/span><\/td>\n-128 to 20<\/span><\/td>\nFloat<\/span><\/td>\ndB<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Under Clip Meter<\/strong>\u00a0mode, following is the control output available for each channel.<\/span><\/p>\n\n\n\n\n
      Parameter<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\nRange<\/strong><\/span><\/td>\nData Type<\/strong><\/span><\/td>\nUnit<\/strong><\/span><\/td>\n<\/tr>\n
      Clip Indicator<\/span><\/strong><\/td>\nClip Indicator per channel based on the tuned threshold parameter <\/span><\/td>\n0 or 1<\/span><\/td>\nFloat<\/span><\/td>\nNone<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

       <\/p>\n","protected":false},"excerpt":{"rendered":"

      The Level Monitor is intended to measure the level of input; the audio samples are sent to the output without modification. Use case: This object can be deployed in Level Monitor mode whenever there is a need to measure level of signal level and in Clip Meter mode to check if the level is causing 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