Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2013

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Programming Fail

  • To: mathgroup at smc.vnet.net
  • Subject: [mg132029] Re: Programming Fail
  • From: Dean Rosenthal <deanrosenthal at gmail.com>
  • Date: Tue, 19 Nov 2013 02:57:55 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Delivered-to: l-mathgroup@wolfram.com
  • Delivered-to: mathgroup-outx@smc.vnet.net
  • Delivered-to: mathgroup-newsendx@smc.vnet.net
  • References: <20131117232215.A9F846A15@smc.vnet.net> <Pine.GSO.4.64.1311171800480.21281@cory>

Looks like inserting ToExpression does the work:

Sound[Thread[SoundNote[IntegerDigits[ToExpression[a]]]]]


Where "a" is the output of the first routine.  Thanks for your input, Alex,
I wouldn't have used ToExpression without your suggestion.


Thanks,

Dean


On Sun, Nov 17, 2013 at 10:05 PM, Dean Rosenthal <deanrosenthal at gmail.com>wrote:

> Thanks.  Yes, that is correct, pitchMap uses integers. Here is where I am,
> I am invoking "IntegerDigits" to create the sound object:
>
> Sound[Thread[SoundNote[IntegerDigits[13235]]]]
>
>
> Where the values are, those need to come from this:
>
>
> StringJoin[
>
>   NestList[
>    StringReplace[#, {"0" -> "2", "2" -> "12", "1" -> "23", "3" -> "45",
>       "4" -> "56"}] &, "0", 4]];
>
>
> I can add the pitch mapping, they instrument, length of time later.  But
> I'm not sure how to make the output from:
>
>
> StringJoin[
>
>   NestList[
>    StringReplace[#, {"0" -> "2", "2" -> "12", "1" -> "23", "3" -> "45",
>        "4" -> "56"}] &, "0", 4]];
>
>
> land HERE:
>
>
> Sound[Thread[SoundNote[IntegerDigits[HERE]]]]
>
>
> Thanks,
>
> Dean
>
>
> PS. Also, if I use these particular values 0->2, etc. - note that the
> sound object won't respond to "0", i.e. won't map correctly (I've bumped
> each value up by one, so the starting point is "1" in my .nb)
>
>
> On Sun, Nov 17, 2013 at 9:36 PM, Alex Krasnov <
> akrasnov at cory.eecs.berkeley.edu> wrote:
>
>> The main issue is that A uses strings but pitchMap uses integers. Here
>> are three possible solutions:
>>
>> In:     A = NestList[StringReplace[#, {"0" -> "2", "2" -> "12", "1" ->
>> "23", "3" -> "45", "4" -> "56"}] &, "0", 7];
>> In:     pitchMap = {"0" -> "B4", "1" -> "C4", "2" -> "D4", "3" -> "E4",
>> "4" -> "F4", "5" -> "G4", "6" -> "A4"};
>> In:     Sound[Thread[SoundNote[Flatten[Characters[A]] /. pitchMap]]]
>>
>> In:     A = NestList[StringReplace[#, {"0" -> "2", "2" -> "12", "1" ->
>> "23", "3" -> "45", "4" -> "56"}] &, "0", 7];
>> In:     pitchMap = {0 -> "B4", 1 -> "C4", 2 -> "D4", 3 -> "E4", 4 ->
>> "F4", 5 -> "G4", 6 -> "A4"};
>> In:     Sound[Thread[SoundNote[ToExpression[Flatten[Characters[A]]] /.
>> pitchMap]]]
>>
>> In:     A = NestList[Flatten[Replace[#, {0 -> 2, 2 -> {1, 2}, 1 -> {2,
>> 3}, 3 -> {4, 5}, 4 -> {5, 6}}, 1]] &, {0}, 7];
>> In:     pitchMap = {0 -> "B4", 1 -> "C4", 2 -> "D4", 3 -> "E4", 4 ->
>> "F4", 5 -> "G4", 6 -> "A4"};
>> In:     Sound[Thread[SoundNote[Flatten[A] /. pitchMap]]]
>>
>> Unfortunately, Mathematica displays 0 and "0" in the same way. You can
>> use FullForm in order to avoid confusion.
>>
>> Alex
>>
>>
>>
>> On Sun, 17 Nov 2013, Dean Rosenthal wrote:
>>
>>  Hi:
>>>
>>> My question is going to take all of you about a split second to answer.
>>> Sadly, programming is something I seem to be congenitally incapable of
>>> teaching myself and doing well.  I usually just cut and paste specifics
>>> into prewritten algorithms.
>>>
>>> If you do this
>>>
>>> pitchMap = {1 -> {"C4", "D4"}, 2 -> "D4", 3 -> "E4", 4 -> "F4", 5 ->
>>> "G4"};
>>>
>>> Sound[Thread[SoundNote[Flatten[IntegerPartitions[5]] /. pitchMap]]]
>>>
>>>
>>> You get a music player and can play the result.
>>>
>>>
>>> If you do this:
>>>
>>>
>>> A = NestList[
>>>  StringReplace[#, {"0" -> "2", "2" -> "12", "1" -> "23", "3" -> "45",
>>>     "4" -> "56"}] &, "0", 7]
>>>
>>> pitchMap = {0 -> "B4", 1 -> "C4", 2 -> "D4", 3 -> "E4", 4 -> "F4", 5 ->
>>> "G4",
>>>   6 -> "A4"};
>>>
>>> Sound[Thread[SoundNote[Flatten[A]] /. pitchMap]]]
>>>
>>>
>>> You get nothing, just output.  See what I did there?  I substituted,
>>> because that's what you do if you don't know how to program!  On the face
>>> of things, I can't see why it wouldn't work, but I've wasted at least an
>>> hour going through documentation and Googling and trying different
>>> approaches.  I'm not a programmer and I can't seem to teach myself how to
>>> do this, ideas?
>>>
>>>
>>> Thanks,
>>>
>>>
>>> Dean
>>>
>>>
>>>
>
>
> --
> Dean Rosenthal
> www.deanrosenthal.org
>
>
>
>


-- 
Dean Rosenthal
www.deanrosenthal.org




  • Prev by Date: Re: Programming Fail
  • Next by Date: Re: Animate cannot be combined?
  • Previous by thread: Re: Programming Fail
  • Next by thread: Re: Programming Fail