## 535 Reputation

11 years, 251 days

## Social Networks and Content at Maplesoft.com

Seldom to ask question after retired math hobby Just waiting for beauty who born in 1994 And waited for her email to mavio@protonmail.com What is the difference in ownership among different universe?

## @acer I record my speaking 5 second...

I record my speaking 5 seconds in window 7 soundrecorder.exe

is it negative float numbers can be removed?

or Only care positive number?

i find piano is using sin wave and frequency

but speaking wave is not piano

do I need to convert speaking wave into 1 d array of frequency?
if so, how to convert the 2* 300000 array into frequency?

if I use the converted frequency save to wave , will the result sound play my voice speaking? Or only music?

If I use a pop music wave file , it will be 2* n array file? Do I need to convert to frequency ? Same as human speaking above? How to do?

## @acer  i had recorded a sound wave...

i had recorded a sound wave 5 seconds, over 2 * 300000 size matrix

when i use forloop to run,

it is very slow.

how to fasten the speed of processing wave file?

## @acer it is like wave.how about A a...

it is like wave.

how about A and then B notes just like type piano A and then B?

is it easy to type C,D,E,F,G,A,B,C consecutively?

how to do?

## @acer  both methods not work &nbs...

both methods not work

with(ExcelTools):
with(plots):
saveplot := proc(v_p, v_filename, v_w:="800", v_h:="600")
plotsetup("png",plotoutput=v_filename,plotoptions=cat("quality=100,noborder,width=",v_w,"height=",v_h));
print(plots[display](v_p));
plotsetup(default);
fclose(v_filename);
end:

ma := []:
me := []:
p := dualaxisplot(listplot(ma, color = red), listplot(me, color = blue), style = line, gridlines = false);
saveplot(p,"C:\\Users\\secret\\Documents\\myfile1.png");
end proc;

sell := proc(ss,windowlength)
ma := []:
me := []:
p := dualaxisplot(listplot(ma, color = red), listplot(me, color = blue), style = line, gridlines = false);
saveplot(p,"C:\\Users\\secret\\Documents\\myfile2.png");
end proc;

<html>
<script>
</script>
<img src="file:\\\C:\\Users\\secret\\Documents\\myfile1.png" ></img>
<p>Sell</p>
<img src="file:\\\C:\\Users\\secret\\Documents\\myfile2.png" ></img>
</html>
-----------------------------------------------------------
with(ExcelTools):
with(plots):
saveplot := proc(v_p, v_filename, v_w:="800", v_h:="600")
plotsetup("png",plotoutput=v_filename,plotoptions=cat("quality=100,noborder,width=",v_w,"height=",v_h));
print(plots[display](v_p));
fclose(v_filename);
plotsetup(default);
end:

ma := []:
me := []:
p := dualaxisplot(listplot(ma, color = red), listplot(me, color = blue), style = line, gridlines = false);
return p;
end proc;

sell := proc(ss,windowlength)
ma := []:
me := []:
p := dualaxisplot(listplot(ma, color = red), listplot(me, color = blue), style = line, gridlines = false);
return p;
end proc;

with(ExcelTools):
with(plots):
g1 := []:
g2 := []:
for i from 20 by -5 to 1 do
g2 := [op(g2), sell(i,100)]:
od:
animate(dualaxisplot,[g1[t]],t=1..3);

hello := seq(g1[t], t = 1 .. 100);
display([hello],insequence=true);

## @mmcdara if I record a wave sound d...

if I record a wave sound data or a song, then

i just Input half of data to predict or random generate the later half data and compare them whether the same

i know where is the turning point in wave sound data.

but I need to generate random data to go to the direction i want. But still has unknown about which thing create the next turning point.

hope to continuously generate brain wave in future that computer can think and become human in future

## @Mariusz Iwaniuk  but the proof is...

but the proof is not using the definition to proof

https://en.m.wikipedia.org/wiki/Transcendental_function

## @vv  i do not know F(x) then assu...

i do not know F(x)

then assume it is exp(x) and assign weight on each terms of exp(x)

look like machine learning

but the residue terms of exp(x) may be different.

it may lack of laws of weight and do not know which type of x value that can work with weight

## @vv  diff(f,x)=F(x) | x=1 = 0 &nb...

diff(f,x)=F(x) | x=1 = 0

F(x) | x=2 = 0

...four equations system

assume F(x) = w dot product exp(x)

i use first four terms of exp(x)

w=[a1,a2,a3,a4]

but I am wrong because the residue of each equation are different

Can not solve or minimise in this case.

## @vv  for example assume b/a, c/d...

for example

assume

b/a, c/d

sort it

should be [a, b, c, d] or [c, d, a, b]

how to check

whether have case that [a, c, b, d]

or [a, c, d, b]

if these case exist then It must not a correct sequence

how to check this case?

## @vv if I use a series of values whi...

if I use a series of values which fluctuate around a value then I assume that is a ratio of an unknown sequence

i sort this ratio series and use sequence library to guess generating function

is it possible to find a consistent sequence or generating function from any subset of sequence?

how many data required to ensure that series is a consecutive ratio that can be guess?

if accuracy is not enough, then will it affect the convert to fraction ?

because I sort the all denominator and numerator into one series.

## @Carl Love  is there examples abou...

is there examples about apply rules such as beta reduction to a algebra function? Or define rules etc basic material?

i can not search lambda calculus example in help file.

which books have these examples or basic example that can be used by edit Haskell code to maple code?

can not access

## @nm my user name and administrator ...

my user name and administrator has read access , unencrypted still can not access

i tried and opened with notepad

## @tomleslie  my keys has repea...

my keys has repeated value

how to do?

and I want value of table only one value , not a list

## @tomleslie very thank youi will red...

Thank you very much

i will redefine the problem

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