[sdiy] Panning with LM13700

Tom Bugs admin at bugbrand.co.uk
Sun Jan 1 21:14:25 CET 2017

Not LM13700 based, but the details within the THAT app note here may be 
some use:: http://www.thatcorp.com/datashts/dn120.pdf (VCAs in pan pot apps)

On 01/01/2017 19:55, Tom Wiltshire wrote:
> Yeah, I've seen that Thomas Henry one. The same idea appears in the SSM2045 datasheet. But this design is -6dB centre, constant level, not constant power. I was looking for something that does a smooth pan of a mono input. The -6dB pan sounds like it starts in your left ear, then shoots off somewhere in front of you, and then zooms back into your right ear. I find it quite distracting, and it seems to narrow the stereo field for me.
> On 1 Jan 2017, at 17:26, Matthias Herrmann <matthias.herrmann at fonik.de> wrote:
>> i recently used a simplified version of this one:
>> http://electro-music.com/forum/viewtopic.php?t=54633
>> i have seen something similiar before (tom gamble, IIRC).
>> cheers,
>> matthias
>>> -----Ursprüngliche Nachricht-----
>>> Von: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] Im Auftrag von Tom
>>> Wiltshire
>>> Gesendet: Sonntag, 1. Januar 2017 18:07
>>> An: Synth-diy at synth-diy.org
>>> Betreff: [sdiy] Panning with LM13700
>>> Hi All,
>>> Happy New Year to everyone! Here's hoping you all have a great year with
>>> many (completed) synth projects.
>>> I've got  quick question - what's the best way to do equal power panning (-
>>> 3dB in the centre) with the LM13700? I'm assuming that such a thing has
>>> been done already, so it's seems silly to reinvent the wheel, but I can't
>>> find anything that isn't a simple linear crossfade (which is ok for
>>> crossfading, but not so good for panning).
>>> Any tips/pointers appreciated.
>>> Thanks,
>>> Tom
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