thanks....sounds interesting
-----Original message-----
From: gavin curtis
gavincurtis@...Date: Fri, 25 Sep 2009 00:26:18 -0600
To:
yamahacs80@yahoogroups.comSubject: Re: [yamahacs80] Any interest for digital auto-tuning and
digital memory preset feature add-on?
Tuning function is with the optional pushbutton on the rear patch
panel (audio outputs and pedal jacks). This allows tuning at any
time, but audio outputs are muted during the process.
If you choose no switch (no visible modifications), then the system
tunes at each power-up cycle.
This is prototype project for my CS-80, but it could be made into kit
form for others. It could be available early next year if all goes
well.
--- On Thu, 9/24/09, rj krohn wrote:
From: rj krohn
Subject: Re: [yamahacs80] Any interest for digital auto-tuning and
digital memory preset feature add-on?
To: yamahacs80@yahoogroups.com
Date: Thursday, September 24, 2009, 3:53 PM
thanks for this info! hmm. interesting. i might be into the tuning
board, but i'd probably not want to be at the "first wave" of folks to
implement. how would the tuning function be
controlled, from the front panel?
--- On Thu, 9/24/09, gavincurtis wrote:
From: gavincurtis
Subject: [yamahacs80] Any interest for digital auto-tuning and digital
memory preset feature add-on?
To: yamahacs80@yahoogro ups.com
Date: Thursday, September 24, 2009, 2:29 AM
Been experimenting with a prototype digital tuning add-on for the
CS-80. A small micro-controller board calibrates all critical
oscillators to a referencecrystal via serial data controlled trim-pots
on demand. Never have to open the unit up again for tuning.
Also working with a memory preset system which has been a challenging
design concept so far. Like the auto-tuner, is a relatively compact
circuit board that fits into the case of the CS-80. A low profile
remote user panel fits to the underside of the micro-slider memory
cover via a 4 conductor ribbon cable. The add-on is only visible when
the cover door is open.
You program the keyboard as you normally would by adjusting the
micro-sliders to obtain the desired sound. Then select any one of 999
available memory locations and instantly store that setting into
digital memory. You can also copy any store sound settings in your
library to a row of 5 "radio preset" buttons for instant performance
presets. A 2nd identical digital storage interface is directly below
and is for the 2nd set of micro sliders.... so nearly 2000
presetscould be stored.
The memory preset system has it's own internal bank of digitally
controlled trimmers that exactly mimic the control panel sliders.
Imagine if each micro-slider had a twin internal motor driven slider
controlled by a computer
The memory preset system records the slider positions you set with
your fingers and stores their positions into any one of the 999 spaces
in the FLASH memory. Simply call up any of the (up to 999) memory
locations, the internal pots instantly move to the desired positions.
Technical to install, but would be very clean. It could also be
removed at a future date and keyboard returned 100% to its original
state if desired.
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