Re: playing music with GP

It's not really my script, I can't take credit.  I only made a minor
modification to Bill's script by applying an "envelope" (varying amplitude
wrt duration) to individual notes.

-Hans

On Thu, Jul 10, 2025 at 3:25 PM American Citizen <[email protected]>
wrote:

> Hmmm, Hans, your script works great, but there seems to be a mild
> dissonance, due to the scale of octave being used. Are you using chromatic
> scale? I am curious, because the exact tones don't match my orchestral
> memory of those tones in "Ode to Joy"
>
>
> On 7/9/25 22:51, Hans L wrote:
>
> Very interesting usage of pari.
> For fun I added a basic ADSR envelope
> https://en.wikipedia.org/wiki/Envelope_(music)#ADSR
> This gets rid of the pops between notes (without a "release"/fade-out,
> previous notes are interrupted at any point mid-sine-wave causing sharp
> transitions) and adds a little more character to the sound.
>
> And of course I recognize Ode to Joy :)
>
> -Hans
>
> On Wed, Jul 9, 2025 at 4:15 PM Bill Allombert <
> [email protected]> wrote:
>
>> Dear PARI lovers,
>>
>> I have written a GP script to play music using GP (really play music, not
>> just sending MIDI data).
>>
>> One need the "aplay" alsa utility. the instrument is the formula in the
>> playnote
>> function.
>>
>> If you use the latest GIT version, you can use the first "start" function
>> instead of the second one.
>>
>> Can you recognize the music (without reading the score) ?
>> (Sorry in advance for any error in the score)
>>
>> Cheers,
>> Bill.
>>
>