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yvess91911080
Participant
August 24, 2018
Answered

Pan envelop min and max values

  • August 24, 2018
  • 1 reply
  • 487 views

Hi,

would like to know what are the limit values (min and max) of stereo.panner envelop, as seen in Audition 2018, but also as it is coded in a sesx file.

Is it -1 to 1 or 0 to 1. If it is 0 to 1, how do you interpret it ?

Thnx very much.

    This topic has been closed for replies.
    Correct answer yvess91911080

    I'm not sure why you think that "usually, stereo is measured between -1 to 1."  ProTools measures it from -100 to +100, Samplitude 0 to 2, Reaper -1 to +1 and I could go on but the answer to your question is that Audition uses -1 to +1.

    But you see those are track pan values I'm talking about and you are looking at clip pan values which range from 0 to 1 so Audition has two scales, one for track pan and one for clip pan and as such I would think that the values you are looking at should now be pretty obvious.

    As to how you 'interpret' them I would suggest that you look at each of the keyframes (from memory if you hover over or click on the keyframe it will reveal it's value and you should then be able to relate those values back to each of the seven values in the sesx


    Thank you,

    In fact, KeyFrames values are scaled from 0 to 1, that concerns right speaker pan level. For left value : L = 1 - R. 0,5 is the center value (L=R=0.5).When the level is from 0 to 1, it seems that the formula is Linear power panning. When the values are scaled from -1 (or -100) to 1, the formula is Constant power panning.

    1 reply

    SteveG_AudioMasters_
    Community Expert
    Community Expert
    August 24, 2018

    It's scaled from -100 to +100, and I would expect those values to be reflected in the ses file storage. minus values are when it's panned to the left, and plus values to the right. No panning results in a value of 0. A value of 100 cuts off the other channel completely.

    As for how you actually 'interpret' that - well you can't, really, as the effects of panning depend entirely upon how you are listening to the results. It's completely different between headphones and loudspeakers.

    yvess91911080
    Participant
    August 25, 2018

    Thank you for the answer...

    Let's have a look at this XML code from my .sesx file :

            <component componentGuid="90f8234f-6219-4c77-a751-a6767b0f8ce1" componentID="Audition.StereoPanner" id="clipPan" name="StereoPanner" powered="true">
              <parameter index="0" name="Panoramique" parameterValue="-34.5323792">
                <parameterKeyframes enableSplines="false" readOnly="false">
                  <parameterKeyframe sampleOffset="191451" select="false" type="linear" value="0.2477477"/>
                  <parameterKeyframe sampleOffset="1047940" select="false" type="linear" value="0.5"/>
                  <parameterKeyframe sampleOffset="1318994" select="false" type="linear" value="0.8741007"/>
                  <parameterKeyframe sampleOffset="2017285" select="false" type="linear" value="0.0035971"/>
                  <parameterKeyframe sampleOffset="2183545" select="false" type="linear" value="0.2841727"/>
                  <parameterKeyframe sampleOffset="2815332" select="false" type="linear" value="0.5"/>
                  <parameterKeyframe sampleOffset="3158935" select="false" type="linear" value="0.6726618"/>
                </parameterKeyframes>
              </parameter>
            </component>

    As we can see, values are limited between 0 and 1. Usually, stereo is measured between -1 to 1. How shall I understand these

    values ?

            <component componentGuid="90f8234f-6219-4c77-a751-a6767b0f8ce1" componentID="Audition.StereoPanner" id="clipPan" name="StereoPanner" powered="true">
              <parameter index="0" name="Panoramique" parameterValue="-34.5323792">
                <parameterKeyframes enableSplines="false" readOnly="false">
                  <parameterKeyframe sampleOffset="191451" select="false" type="linear" value="0.2477477"/>
                  <parameterKeyframe sampleOffset="1047940" select="false" type="linear" value="0.5"/>
                  <parameterKeyframe sampleOffset="1318994" select="false" type="linear" value="0.8741007"/>
                  <parameterKeyframe sampleOffset="2017285" select="false" type="linear" value="0.0035971"/>
                  <parameterKeyframe sampleOffset="2183545" select="false" type="linear" value="0.2841727"/>
                  <parameterKeyframe sampleOffset="2815332" select="false" type="linear" value="0.5"/>
                  <parameterKeyframe sampleOffset="3158935" select="false" type="linear" value="0.6726618"/>
                </parameterKeyframes>
              </parameter>
            </component>

    SteveG_AudioMasters_
    Community Expert
    Community Expert
    August 25, 2018

    I'm not clear as to why you need to understand this - what on earth are you doing with it?

    But as far as the actual values are concerned, and how it works, almost certainly the best person to answer this is Suite Spot, as he wrote the .sesx conversion utility. Hopefully he'll be along and pick this up.