MOTM

ac writes:

>>FFT?<<

FFT? It's involved in part of the process, but a couple of different methods
could be used. In theory, that part could even be done by analog
electronics. But what you're hearing are nothing more than a few sinewave
oscillators.

Jeff Laity writes:

>>The triangle needs work, sounds too synthy.<<

Ha. If I had a dime for everytime somebody said something real sounded or
looked fake, I'd be very rich. Just the Seekers synth alone would have made
me a lot of money. You'll have to blame the most high for the physics of
sound, or the maker of the triangle. I have no control over that.

Les Mizzell writes:

>>Would you mind further expounding upon exactly what we're hearing?<<

I guess it could somewhat be called a resynthesizer, but instead of using
one oscillator per harmonic, or throwing massive amounts of oscillators and
multi-band noise sources at the problem as everybody else does (and usually
with varied success), I'm using only a handful of sinewave oscillators to
synthesize all the frequencies of the entire audio range. Since they're
oscillators, and relatively few of them, I can them make them do all kinds
of things really easily. My main drive to do this was to get virtually
artifact-free pitch shifting of polyphonic audio. There isn't a single
hardward effects unit on the market that can do that. If they sound good,
they only handle monophonic audio. All the others sound like crap. More
audio demos below.

Here's the same demo, but only using 27 sinewave oscillators to generate all
the sound heard:

http://home.att.net/~elhardt3/27_Sinewaves.mp3

Here's an example of the pitch shifting (while preserving time). First is
the original audio, followed by it pitched up 3 semitones, then up by 7,
then down by 5, the down by 12.

http://home.att.net/~elhardt3/PitchShiftDemo.mp3

Just for the hell of it, I added strings pitched up an octave at the 19
second mark, and a bit of sub bass at the 31 second mark.

http://home.att.net/~elhardt3/OctaveStrings_SubBass.mp3

My pitch shifter can also do selective pitch shifting where only a certain
frequency range is pitch shifted. In this case, I took speech synthesizer
which like most on the market have a limited bandwidth, in this case only to
8K Hz, and then shifted up the 4K to 8K range an octave to fill in the
missing 8K to 16K range to get a clearer more hi-fi sound with more
presence. First is the original low-fi version followed by an extra octave
of pitch shifted sound.

http://home.att.net/~elhardt3/SpeechSynthExtraOctave.mp3

-Elhardt

Hhhmmm, why all the oscillators? Couldn't you do the same thing with 8 or 9
and just a handful of multiplexed 'sine was animators'? ;-)

John L Rice

-----Original Message-----
From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of
Kenneth Elhardt
Sent: Saturday, August 16, 2008 7:05 PM
To: motm@yahoogroups.com
Subject: Re: [motm] Experiment, NOW 27 Sinewaves Synthesize Orchestra

ac writes:

>>FFT?<<

FFT? It's involved in part of the process, but a couple of different methods
could be used. In theory, that part could even be done by analog
electronics. But what you're hearing are nothing more than a few sinewave
oscillators.

Jeff Laity writes:

>>The triangle needs work, sounds too synthy.<<

Ha. If I had a dime for everytime somebody said something real sounded or
looked fake, I'd be very rich. Just the Seekers synth alone would have made
me a lot of money. You'll have to blame the most high for the physics of
sound, or the maker of the triangle. I have no control over that.

Les Mizzell writes:

>>Would you mind further expounding upon exactly what we're hearing?<<

I guess it could somewhat be called a resynthesizer, but instead of using
one oscillator per harmonic, or throwing massive amounts of oscillators and
multi-band noise sources at the problem as everybody else does (and usually
with varied success), I'm using only a handful of sinewave oscillators to
synthesize all the frequencies of the entire audio range. Since they're
oscillators, and relatively few of them, I can them make them do all kinds
of things really easily. My main drive to do this was to get virtually
artifact-free pitch shifting of polyphonic audio. There isn't a single
hardward effects unit on the market that can do that. If they sound good,
they only handle monophonic audio. All the others sound like crap. More
audio demos below.

Here's the same demo, but only using 27 sinewave oscillators to generate all
the sound heard:

http://home.att.net/~elhardt3/27_Sinewaves.mp3

Here's an example of the pitch shifting (while preserving time). First is
the original audio, followed by it pitched up 3 semitones, then up by 7,
then down by 5, the down by 12.

http://home.att.net/~elhardt3/PitchShiftDemo.mp3

Just for the hell of it, I added strings pitched up an octave at the 19
second mark, and a bit of sub bass at the 31 second mark.

http://home.att.net/~elhardt3/OctaveStrings_SubBass.mp3

My pitch shifter can also do selective pitch shifting where only a certain
frequency range is pitch shifted. In this case, I took speech synthesizer
which like most on the market have a limited bandwidth, in this case only to
8K Hz, and then shifted up the 4K to 8K range an octave to fill in the
missing 8K to 16K range to get a clearer more hi-fi sound with more
presence. First is the original low-fi version followed by an extra octave
of pitch shifted sound.

http://home.att.net/~elhardt3/SpeechSynthExtraOctave.mp3

-Elhardt


------------------------------------

Yahoo! Groups Links

Hi all,

Anyone have the physical dimensions of the MOTM-990 Adapter Board handy? I
couldn't find them on the website. I have one on order but I need to know
how big it is and where it will fit before I start drilling and cutting
holes to mount my PowerOne supply to the panel I have etc. I want to get
what I can done while I'm waiting for the board.

Thanks.

John L Rice

Paul says the outside is 3.5 x 7 inches. Thanks! ;-)

-----Original Message-----
From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of John L
Rice
Sent: Sunday, August 17, 2008 10:57 PM
To: motm@yahoogroups.com
Subject: [motm] MOTM-990 Adapter Board dimensions?

Hi all,

Anyone have the physical dimensions of the MOTM-990 Adapter Board handy? I
couldn't find them on the website. I have one on order but I need to know
how big it is and where it will fit before I start drilling and cutting
holes to mount my PowerOne supply to the panel I have etc. I want to get
what I can done while I'm waiting for the board.

Thanks.

John L Rice


------------------------------------

Yahoo! Groups Links

That was me yanking your chain. ;)

John Rice,

>>Hhhmmm, why all the oscillators? Couldn't you do the same thing with 8 or

9 and just a handful of multiplexed 'sine was animators'? ;-)<<

Maybe I could reduce it to 1 oscillator. ;-) But seriously, no. I've gone
about as low as possible before things go wrong and the output isn't
acceptable.

Jeff Laity,

>>That was me yanking your chain. ;)<<

Ah, I was wondering why you picked out the most insignificant sound in the
audio sample.

Back on the subject, here is a strange transformation using my
resynthesizer. It's a snippet of a Simon & Garfunkel tune followed by an
altered melody resulting in a rather unsettling end result.

http://home.att.net/~elhardt3/MelodyChange.mp3

-Elhardt

On 2008-08-19 08:01 -0400, Kenneth Elhardt wrote:

> Jeff Laity,
> >>That was me yanking your chain. ;)<<
>
> Ah, I was wondering why you picked out the most insignificant
> sound in the audio sample.

On this system, there is definitely something wrong with the
triangle. The rest is stunning, however.

--
André Majorel <URL:http://www.teaser.fr/~amajorel/>
Do not use this account for regular correspondence.
See the URL above for contact information.

It seems I get more posts to me personally than to the list. I'm not sure
if that's intensional, but I might as well answer them on the list so I
don't get more of the same questions.

Ti_ writes:

>>That sounds kickas$$! Like some kind of creepy frequency shifted vocoded

tweakness. So, is this resynthesizer a piece of software or hardware<<

Software for now, could be digital hardware later. Not really possible to
do a resynthesizer with analog, although I did come up with a possible way
that might work on the Nord Modular (not like this one though).

Eric Brombaugh writes:

>>OK - that's cool. Sound of Silence remixed for Halloween. What did you do

to it to get that effect? Perhaps a linear frequency shift rather than a
true pitch shift? It sounds like the vocal harmonics ended up out of sync.<<

In that one, I locked the pitch of the oscillators to certain intervals so
that audio coming in at certain frequencies got pushed up or down (or
remapped, or quantized) to the closest frequencies on the output, resulting
in different notes and/or harmonics from the input audio. I could easily do
linear frequency shifting too, although that would sound different and
probably sound a bit too messed up.

-Elhardt

It seems I get more posts to me personally than to the list. I'm not sure
if that's intensional, but I might as well answer them on the list so I
don't get more of the same questions.

Ti_ writes:
>>That sounds kickas$$! Like some kind of creepy frequency shifted vocoded
tweakness. So, is this resynthesizer a piece of software or hardware<<

Software for now, could be digital hardware later. Not really possible to
do a resynthesizer with analog, although I did come up with a possible way
that might work on the Nord Modular (not like this one though).

Eric Brombaugh writes:
>>OK - that's cool. Sound of Silence remixed for Halloween. What did you do
to it to get that effect? Perhaps a linear frequency shift rather than a
true pitch shift? It sounds like the vocal harmonics ended up out of sync.<<

In that one, I locked the pitch of the oscillators to certain intervals so
that audio coming in at certain frequencies got pushed up or down (or
remapped, or quantized) to the closest frequencies on the output, resulting
in different notes and/or harmonics from the input audio. I could easily do
linear frequency shifting too, although that would sound different and
probably sound a bit too messed up.

-Elhardt

yup, I was just being hasty at work and didn't realize when I hit the reply button that it was just going back to the sender and not the list.

--- On Mon, 8/25/08, Adam Schabtach <lists@...> wrote:

From: Adam Schabtach <lists@...>
Subject: RE: [motm] Experiment, NOW 27 Sinewaves Synthesize Orchestra
To: "'MOTM List'" <motm@yahoogroups.com>
Date: Monday, August 25, 2008, 11:32 AM

You probably get more posts sent to you personally than to the list because this list, unlike the vast majority of mailing lists, is set up so that replies go to the person who posted the original message rather than to the list itself. Hence if someone isn't paying attention when they reply to a post, it doesn't go to the list. I've never understood why this list is set up this way, but it's been set up this way for a number of years.

The most annoying part is that sometimes it's hard to tell whether replies were meant to be personal (i.e. for me only) or for the list.

--Adam

It seems I get more posts to me personally than to the list. I'm not sure
if that's intensional, but I might as well answer them on the list so I
don't get more of the same questions.

Ti_ writes:
>>That sounds kickas$$! Like some kind of creepy frequency shifted vocoded
tweakness. So, is this resynthesizer a piece of software or hardware<<

Software for now, could be digital hardware later. Not really possible to
do a resynthesizer with analog, although I did come up with a possible way
that might work on the Nord Modular (not like this one though).

Eric Brombaugh writes:
>>OK - that's cool. Sound of Silence remixed for Halloween. What did you do
to it to get that effect? Perhaps a linear frequency shift rather than a
true pitch shift? It sounds like the vocal harmonics ended up out of sync.<<

In that one, I locked the pitch of the oscillators to certain intervals so
that audio coming in at certain frequencies got pushed up or down (or
remapped, or quantized) to the closest frequencies on the output, resulting
in different notes and/or harmonics from the input audio. I could easily do
linear frequency shifting too, although that would sound different and
probably sound a bit too messed up.

-Elhardt

I'm really pretty clueless about this end of things, but in case this
question isn't too silly...

I received my 990, and I don't have a clue as to how to connect it to
the 950. Obviously I'll need a cable of some sort, but then what do
people generally do - just lay it down horizontally or something?

I really have no idea - I thought it would be self explanatory and
perhaps come with the necessary connectors, but I guess not.

Hi,

First, make sure you mount the 990 board securely to your rack/cabinet/case.
If your case is wood and thick enough, you might be able to use wood screws
but otherwise use nuts and bolts and lock washers etc. Make sure to use 1/2"
or longer standoffs/spacers (they are little plastic or metal tubes that
look like straight macaroni), don't just bolt/screw the 990 flat against
your rack surface!

Then, probably the easiest way to connect the 990 adapter board to the 950
board is to use a MOTM 6 pin power cable. Cut one in half (or to whatever
length allows a comfortable reach) and strip a 1/4" or so of the insulation
off. Attach the stripped ends to the 990's screw terminals and then just
plug the other end into your 950.

If you can look at Muff's forum I have some pictures in this thread of a DIY
power supply I build using a MOTM-990 as the main distro board. Not the same
thing you are doing but maybe it will give you some ideas! :-)
http://www.muffwiggler.com/forum/viewtopic.php?t=2628


Best of luck!
John L Rice

> -----Original Message-----
> From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of
> Ancient Eyeball Recipe
> Sent: Saturday, April 10, 2010 8:33 AM
> To: MOTM List
> Subject: [motm] installing a 990 adapter board
>
> I'm really pretty clueless about this end of things, but in case this
> question isn't too silly...
>
> I received my 990, and I don't have a clue as to how to connect it to
> the 950. Obviously I'll need a cable of some sort, but then what do
> people generally do - just lay it down horizontally or something?
>
> I really have no idea - I thought it would be self explanatory and
> perhaps come with the necessary connectors, but I guess not.
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

>
> Then, probably the easiest way to connect the 990 adapter board to the 950
> board is to use a MOTM 6 pin power cable. Cut one in half (or to whatever
> length allows a comfortable reach) and strip a 1/4" or so of the
> insulation
> off. Attach the stripped ends to the 990's screw terminals and then just
> plug the other end into your 950.
>

Ummmm...just plug the PWR-6-30 cable into the 950, and the other end into
the 990 :)

I don't ship cables, because many people use discrete wiring in their
cabinets.

Paul S.

ok - I'll just order a cable then. 'Luckily' the stuff that I was waiting for, that required the use of the 990 has been delayed a bit anyway.

Well, there's no way I can do the stuff you describe below. I am not
even close to being a diy type person.

> Hi,
>
> First, make sure you mount the 990 board securely to your rack/
> cabinet/case.
> If your case is wood and thick enough, you might be able to use wood
> screws
> but otherwise use nuts and bolts and lock washers etc. Make sure to
> use 1/2"
> or longer standoffs/spacers (they are little plastic or metal tubes
> that
> look like straight macaroni), don't just bolt/screw the 990 flat
> against
> your rack surface!
>
> Then, probably the easiest way to connect the 990 adapter board to
> the 950
> board is to use a MOTM 6 pin power cable. Cut one in half (or to
> whatever
> length allows a comfortable reach) and strip a 1/4" or so of the
> insulation
> off. Attach the stripped ends to the 990's screw terminals and then
> just
> plug the other end into your 950.
>
> If you can look at Muff's forum I have some pictures in this thread
> of a DIY
> power supply I build using a MOTM-990 as the main distro board. Not
> the same
> thing you are doing but maybe it will give you some ideas! :-)
> http://www.muffwiggler.com/forum/viewtopic.php?t=2628
>
>
> Best of luck!
> John L Rice
>
>
>> -----Original Message-----
>> From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of
>> Ancient Eyeball Recipe
>> Sent: Saturday, April 10, 2010 8:33 AM
>> To: MOTM List
>> Subject: [motm] installing a 990 adapter board
>>
>> I'm really pretty clueless about this end of things, but in case this
>> question isn't too silly...
>>
>> I received my 990, and I don't have a clue as to how to connect it to
>> the 950. Obviously I'll need a cable of some sort, but then what do
>> people generally do - just lay it down horizontally or something?
>>
>> I really have no idea - I thought it would be self explanatory and
>> perhaps come with the necessary connectors, but I guess not.
>>
>>
>> ------------------------------------
>>
>> Yahoo! Groups Links
>>
>>
>>

Yeah, Paul's suggestion for connecting up the two boards is definitely the
easiest! :-) But, I would definitely NOT just let the 990 set loose in your
cabinet. What kind of rack or cabinet do you have?

> -----Original Message-----
> From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of
> Ancient Eyeball Recipe
> Sent: Saturday, April 10, 2010 10:40 AM
> To: John L Rice
> Cc: 'MOTM List'
> Subject: Re: [motm] installing a 990 adapter board
>
> Well, there's no way I can do the stuff you describe below. I am not
> even close to being a diy type person.
>
> > Hi,
> >
> > First, make sure you mount the 990 board securely to your rack/
> > cabinet/case.
> > If your case is wood and thick enough, you might be able to use wood
> > screws
> > but otherwise use nuts and bolts and lock washers etc. Make sure to
> > use 1/2"
> > or longer standoffs/spacers (they are little plastic or metal tubes
> > that
> > look like straight macaroni), don't just bolt/screw the 990 flat
> > against
> > your rack surface!
> >
> > Then, probably the easiest way to connect the 990 adapter board to
> > the 950
> > board is to use a MOTM 6 pin power cable. Cut one in half (or to
> > whatever
> > length allows a comfortable reach) and strip a 1/4" or so of the
> > insulation
> > off. Attach the stripped ends to the 990's screw terminals and then
> > just
> > plug the other end into your 950.
> >
> > If you can look at Muff's forum I have some pictures in this thread
> > of a DIY
> > power supply I build using a MOTM-990 as the main distro board. Not
> > the same
> > thing you are doing but maybe it will give you some ideas! :-)
> > http://www.muffwiggler.com/forum/viewtopic.php?t=2628
> >
> >
> > Best of luck!
> > John L Rice
> >
> >
> >> -----Original Message-----
> >> From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf
> Of
> >> Ancient Eyeball Recipe
> >> Sent: Saturday, April 10, 2010 8:33 AM
> >> To: MOTM List
> >> Subject: [motm] installing a 990 adapter board
> >>
> >> I'm really pretty clueless about this end of things, but in case
> this
> >> question isn't too silly...
> >>
> >> I received my 990, and I don't have a clue as to how to connect it
> to
> >> the 950. Obviously I'll need a cable of some sort, but then what do
> >> people generally do - just lay it down horizontally or something?
> >>
> >> I really have no idea - I thought it would be self explanatory and
> >> perhaps come with the necessary connectors, but I guess not.
> >>
> >>
> >> ------------------------------------
> >>
> >> Yahoo! Groups Links
> >>
> >>
> >>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

It's a roadready rack case. I suppose I could always just do something
crude like tape the 990 to the case....it's not like I"m going to be
inserting and removing cables from it on a daily basis....

> Yeah, Paul's suggestion for connecting up the two boards is
> definitely the
> easiest! :-) But, I would definitely NOT just let the 990 set loose
> in your
> cabinet. What kind of rack or cabinet do you have?
>
>> -----Original Message-----
>> From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf Of
>> Ancient Eyeball Recipe
>> Sent: Saturday, April 10, 2010 10:40 AM
>> To: John L Rice
>> Cc: 'MOTM List'
>> Subject: Re: [motm] installing a 990 adapter board
>>
>> Well, there's no way I can do the stuff you describe below. I am not
>> even close to being a diy type person.
>>
>>> Hi,
>>>
>>> First, make sure you mount the 990 board securely to your rack/
>>> cabinet/case.
>>> If your case is wood and thick enough, you might be able to use wood
>>> screws
>>> but otherwise use nuts and bolts and lock washers etc. Make sure to
>>> use 1/2"
>>> or longer standoffs/spacers (they are little plastic or metal tubes
>>> that
>>> look like straight macaroni), don't just bolt/screw the 990 flat
>>> against
>>> your rack surface!
>>>
>>> Then, probably the easiest way to connect the 990 adapter board to
>>> the 950
>>> board is to use a MOTM 6 pin power cable. Cut one in half (or to
>>> whatever
>>> length allows a comfortable reach) and strip a 1/4" or so of the
>>> insulation
>>> off. Attach the stripped ends to the 990's screw terminals and then
>>> just
>>> plug the other end into your 950.
>>>
>>> If you can look at Muff's forum I have some pictures in this thread
>>> of a DIY
>>> power supply I build using a MOTM-990 as the main distro board. Not
>>> the same
>>> thing you are doing but maybe it will give you some ideas! :-)
>>> http://www.muffwiggler.com/forum/viewtopic.php?t=2628
>>>
>>>
>>> Best of luck!
>>> John L Rice
>>>
>>>
>>>> -----Original Message-----
>>>> From: motm@yahoogroups.com [mailto:motm@yahoogroups.com] On Behalf
>> Of
>>>> Ancient Eyeball Recipe
>>>> Sent: Saturday, April 10, 2010 8:33 AM
>>>> To: MOTM List
>>>> Subject: [motm] installing a 990 adapter board
>>>>
>>>> I'm really pretty clueless about this end of things, but in case
>> this
>>>> question isn't too silly...
>>>>
>>>> I received my 990, and I don't have a clue as to how to connect it
>> to
>>>> the 950. Obviously I'll need a cable of some sort, but then what do
>>>> people generally do - just lay it down horizontally or something?
>>>>
>>>> I really have no idea - I thought it would be self explanatory and
>>>> perhaps come with the necessary connectors, but I guess not.
>>>>
>>>>
>>>> ------------------------------------
>>>>
>>>> Yahoo! Groups Links
>>>>
>>>>
>>>>
>>
>>
>>
>> ------------------------------------
>>
>> Yahoo! Groups Links
>>
>>
>>

> It's a roadready rack case. I suppose I could always just do something
> crude like tape the 990 to the case....it's not like I"m going to be
> inserting and removing cables from it on a daily basis....

Get some 1/2" wide, double-sided foam tape (I get mine at Hobby Lobby). Run
2 parallel strips on the solder side of the board and stick to the case.
Will hold pretty well. The bottom of the case is best, so the weight of the
attached cables is a downward force.

Paul S.

much thanks!