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  • toodles
    replied
    Re: 32' stop frequencies



    Electronic organ manufacturers were NOT consistent in octave naming from one manufacturer to another, so confusion is inevitable between manufacturers. Rodgers used C1=8 ft lowest C pitch, below that were C0 for 16' and C00 for 32'.</P>


    Rather than keeping a list of frequencies, go from A=440 and derive all other notes from that in Excel or any other spreadsheet program you use.</P>


    The next note up is 440*2^(1/12).</P>


    The next note down is 440/(2^(1/12)).</P>


    2^(1/12) is the twelfth root of two, the difference between any two adjacent notes on the chromatic scale.</P>
    <P mce_keep="true"></P>


    Toodles.</P>

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  • MD1032
    replied
    Re: 32' stop frequencies

    Yeah my understanding is that CC is an 8' octave, CCC is a 16' octave, and CCCC is the 32'. My 16' ARS Trumpet is labeled CCC (the 8' is CC), and my 8' Moller Oboe (really old) is labeled CC, so this is pretty consistent.

    Leave a comment:


  • pipe64'
    replied
    Re: 32' stop frequencies



    wow, this is some great information. thanks to everyone!
    </p>

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  • davidecasteel
    replied
    Re: 32' stop frequencies



    I have seen notes labeled as "CC" and "CCC" and even "CCCC" (which I think is the low note of a 64' rank). I have my own method of labeling notes--I call the low note on the organ keyboard "C1" and go all the way up to "C6" as the upper note of a manual. I'm sure it does not agree with any of the other conventions, but it makes sense to me. I have developed an Excel (TM) spreadsheet with all the frequencies assigned to each of the keys (with my notation) in pitch registers from 32' through 1/2'; I also included true frequencies for the mutations 2 2/3', 1 1/3',2/3', 3 1/5', 1 3/5', and 4/5'--these are derived as multiples from the even-tempered frequencies they represent harmonics of.</P>


    Disclaimer: the frequencies I posted and that are found in my table (available on request) are based on what is generated by a Top Octave Generator chip, and are not exact figures derived from twelfth root of two calculations (but they are very close). No one would tune to greater than 4 significant figures accuracy, anyway, so they are good enough.</P>


    David</P>

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  • soubasse32
    replied
    Re: 32' stop frequencies



    There are different naming conventions, which makesthis subjecta bit confusing.</P>


    See Dolmetsch Online- look under the sections Helmholz Pitch Notation, English Octave-Naming Convention, Franco-Belgic Octave-Naming Convention, Scientific Pitch Notation/Note-Octave Notation/American Standard, and Naming the Octaves.</P>

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  • jimmywilliams
    replied
    Re: 32' stop frequencies



    Thanks for the clarification Dave. </P>


    I guess I am confused over the pitch notation. On all the electronic organs I have worked on the lowest pedal note was called C0 - the lowest octave produced by the tone generators is called octave 0. But there are no 32 foot stops on these old electronic organs, so a note called C0 would refer to the lowest pedal pitch at 16'.</P>


    But, on the webpage I included the link for, it called the 16Hz note C0.According toyour data, that isnot correct; It sounded kind of strange to me too as 16Hz is getting near the outer limits of human hearing.</P>


    I thought the 32' pitches were written like C00 - or something like that.</P>


    Are there different standards forusing these "octave numbers" - maybe on piano the octaves have different numbers than on the organ??? </P>


    Thanks for your help Dave.</P>


    - Jim</P>
    <P mce_keep="true"></P>

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  • davidecasteel
    replied
    Re: 32' stop frequencies

    [quote user="jimmywilliams"]


    C0 has a frequency of about 16Hz but to the best of my understanding a that is the lowest note of a 16' stop.</P>


    http://www.phy.mtu.edu/~suits/notefreqs.html</P>
    <P mce_keep="true"></P>


    [/quote]The lowest note of a 16' stop is 32.68828 Hz.</P>


    David</P>

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  • davidecasteel
    replied
    Re: 32' stop frequencies



    Here are the 32' frequencies beginning with the most treble pedal and going down to the bottom C:</P>



    <TABLE class="" style="WIDTH: 48pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=64 border=0 x:str>
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    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="87.290502793296085">87.2905</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="82.453825857519789">82.45383</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="77.736318407960198">77.73632</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="73.356807511737088">73.35681</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="69.290465631929052">69.29047</TD></TR>
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    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="65.376569037656907">65.37657 (C)</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="61.758893280632414">61.75889</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="58.302238805970148">58.30224</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="55.017605633802816">55.01761</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="51.910299003322258">51.9103</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="48.98119122257053">48.98119</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="46.227810650887577">46.22781</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="43.645251396648042">43.64525</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="41.226912928759894">41.22691</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="38.868159203980099">38.86816</TD></TR>
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    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="36.678403755868544">36.6784</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="34.645232815964526">34.64523</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="32.688284518828453">32.68828 (C)</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="30.879446640316207">30.87945</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="29.151119402985074">29.15112</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="27.508802816901408">27.5088</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="25.955149501661129">25.95515</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="24.490595611285265">24.4906</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="23.113905325443788">23.11391</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="21.822625698324021">21.82263</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="20.613456464379947">20.61346</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="19.434079601990049">19.43408</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="18.339201877934272">18.3392</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="17.322616407982263">17.32262</TD></TR>
    <TR style="HEIGHT: 12.75pt" height=17>
    <TD class=xl22 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: windowtext 0.5pt solid; BORDER-BOTTOM: #d4d0c8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 class="xl22" x:num="16.344142259414227">


    16.34414(lowC)</P></TD></TR></TBODY></TABLE></P>


    I was assuming that you were interested in pedal frequencies, but in rereading your question it did not so state. Are you wanting a full 61-note listing?</P>


    David</P>

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  • jimmywilliams
    replied
    Re: 32' stop frequencies



    C0 has a frequency of about 16Hz but to the best of my understanding a that is the lowest note of a 16' stop.</P>


    http://www.phy.mtu.edu/~suits/notefreqs.html</P>
    <P mce_keep="true"></P>

    Leave a comment:


  • soubasse32
    replied
    Re: 32' stop frequencies



    Wikipedia has an article about Piano key frequencieswith a nice chart; although it only goes down to Ain the 32' octave you can interpolate the lower frequencies by halving the frequency of the notes listed in the 16' octave.</P>


    Organists do use multiple 32' stops; the only thing that might sound "muddy" is the texture of the manual tone. If there are low chords in the manual there might be some muddiness to the sound. If anything, 32' tone would serve to help that situation because it will provide a proper bass whichshould anchor thetone (though ideally one would want to thin out the texture on the manuals if you have low chords).</P>


    As far as combining multiple 32' and 16' stops - it all depends. IfI need a lean texture (such as for baroque music) I tend to use fewer stops. For Romantic music I will use lots of stops.</P>

    Leave a comment:


  • pipe64'
    started a topic 32' stop frequencies

    32' stop frequencies



    i understand that the lowest note on a 32' stop has a frequency of 16hz ?</p>

    is there anyone who knows what all the rest of the notes frequency would be all the way up to the highest note on a 32' stop ?</p>

    </p>

    another question about registering the pedals in general. do organists ever register using multiple 32' stops or would that sound too muddy ?</p>

    how about combining multiple 32' and multiple 16' stops ? would that sound muddy or is that common ?</p>

    thanks
    </p>
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