sndarray with numpy array in Windows

Hello,

I'm a researcher using pygame to measure sensory processing in children.  I want to use sndarray to play out a
numpy array I have created, containing a sound stimulus. But I can't seem to get any sound at all.  I'm not an
expert programmer so I would welcome any advice.

I'm using Windows 7, with python 2.7, and the array will play out fine (as float) if I use pyaudiere.  A
simplified version of my code is below - interestingly I also get no sound when I run the example which
someone has kindly posted as a comment on the sndarray doc page. I am baffled!

Many thanks
Caroline

from numpy import *
import pygame

SRATE=44100 # sample rate in Hz
DURATION=1 # duration in sec
# an array of floating-point random numbers
noise= array(random.randn(SRATE*DURATION))
pygame.mixer.pre_init(SRATE, 16, 1,4096)
pygame.init()
# make it int16, scale it for 16 bit
mysound=int16(noise.copy()*2**15)
snd=pygame.sndarray.make_sound(mysound)
snd.play()
pygame.time.wait(DURATION*1000)

Re: Re : [pygame] raycasting engine performances (numpy array)

Re: sndarray with numpy array in Windows

RE: sndarray with numpy array in Windows

Hi, Gumm,

That works a treat - many thanks indeed!!

best wishes
Caroline

From: owner-pygame-users@...
[owner-pygame-users@...] on behalf of stabbingfinger [stabbingfinger@...]
Sent: 04 May 2012 15:42
To: pygame-users@...
Subject: Re: [pygame] sndarray with numpy array in Windows

Hi, Caroline.

If you initialize the display before playing the sound it works. I know it is weird, but I've encountered
this gotcha before--maybe someone familiar with the C source could comment.

If you don't want to display a window, there is a recipe for headless
pygame<http://pygame.org/wiki/DummyVideoDriver> you can use.

Gumm

On Fri, May 4, 2012 at 2:13 AM, Witton, Caroline
<c.witton@...<mailto:c.witton@...>> wrote:
Hello,

I'm a researcher using pygame to measure sensory processing in children.  I want to use sndarray to play out a
numpy array I have created, containing a sound stimulus. But I can't seem to get any sound at all.  I'm not an
expert programmer so I would welcome any advice.

I'm using Windows 7, with python 2.7, and the array will play out fine (as float) if I use pyaudiere.  A
simplified version of my code is below - interestingly I also get no sound when I run the example which
someone has kindly posted as a comment on the sndarray doc page. I am baffled!

Many thanks
Caroline

from numpy import *
import pygame

SRATE=44100 # sample rate in Hz
DURATION=1 # duration in sec
# an array of floating-point random numbers
noise= array(random.randn(SRATE*DURATION))
pygame.mixer.pre_init(SRATE, 16, 1,4096)
pygame.init()
# make it int16, scale it for 16 bit
mysound=int16(noise.copy()*2**15)
snd=pygame.sndarray.make_sound(mysound)
snd.play()
pygame.time.wait(DURATION*1000)

Re: Resetting display

toggle_fullscreen will work only under X11.

I got this working with reloading pygame with new params. This is
working fine for me as long you are in menu of a game so you don't
care for a ingame stuff.

eg.
1. start a game  with basic setup
2. change settings in game menu and save the config.
3. reload pygame module with new setup.

working example:
http://www.pygame.org/project-Dark+Gates-1522-2710.html

No source avaliable atm, but if you are interested i can give you a
code example no problem.

Cheers

On Wed, Apr 4, 2012 at 3:31 PM, Radomir Dopieralski <pygame@...> wrote:
> On Wed, Apr 4, 2012 at 16:28, Nathan Biagini <nathan.open@...> wrote:
>> Hi,
>>
>> i'd like to know if i can, with pygame, reset the display stuffs. I
>> mean, i start with a certain resolution and i'd like to set the
>> fullscreen after a certain condition is raised, but i don't know how
>> to do that? Is that possible?
>
> Yes.
>
> http://www.pygame.org/docs/ref/display.html#pygame.display.toggle_fullscreen
> --
> Radomir Dopieralski

Re: Resetting display

On Tue, May 8, 2012 at 11:12 AM, Bartosz Debski <bartosz@...> wrote:
> toggle_fullscreen will work only under X11.

I didn't know you could run pygame outside of X11.

[...]

--

-- 
Radomir Dopieralski

help with clock

I wrote a small clock program that I might use if it turns out well, but
I am having a small issue where the top of the arcs that grow over time
shifts when I would like it to stay still. Does anyone know how to
achieve this?

Re: Resetting display

Well, i haven't tried to be honest but will toggle_fullscreen work
under Windows ?

On Tue, May 8, 2012 at 10:32 AM, Radomir Dopieralski
<pygame@...> wrote:
> On Tue, May 8, 2012 at 11:12 AM, Bartosz Debski <bartosz@...> wrote:
>> toggle_fullscreen will work only under X11.
>
> I didn't know you could run pygame outside of X11.
>
> [...]
>
> --
> Radomir Dopieralski

Re: Resetting display

No. Only X11, e.g. GNU/Linux (and I think Mac OS X is another example).

If you really want to use toggle_fullscreen when the program is run on X11 without also sacrificing
platform-independence, you could do something like:

fullscreen = not fullscreen
if not pygame.display.toggle_fullscreen():
    if fullscreen:
        window = pygame.display.set_mode(size, FULLSCREEN)
    else:
        window = pygame.display.set_mode(size)

That's of course assuming that the most recent comment in the docs (from 12/30/2010) is right about what
pygame.display.toggle_fullscreen returns.

--- On Wed, 5/9/12, Bartosz Debski <bartosz@...> wrote:

> From: Bartosz Debski <bartosz@...>
> Subject: Re: [pygame] Resetting display
> To: pygame-users@...
> Date: Wednesday, May 9, 2012, 11:31 AM
> Well, i haven't tried to be honest
> but will toggle_fullscreen work
> under Windows ?
> 
> On Tue, May 8, 2012 at 10:32 AM, Radomir Dopieralski
> <pygame@...>
> wrote:
> > On Tue, May 8, 2012 at 11:12 AM, Bartosz Debski <bartosz@...>
> wrote:
> >> toggle_fullscreen will work only under X11.
> >
> > I didn't know you could run pygame outside of X11.
> >
> > [...]
> >
> > --
> > Radomir Dopieralski
> 

Re: Resetting display

Thanks Julian - handy for popping in my PyWeek game 

On 9 May 2012 13:29, Julian Marchant <onpon4@...> wrote:
> No. Only X11, e.g. GNU/Linux (and I think Mac OS X is another example).
>
> If you really want to use toggle_fullscreen when the program is run on X11 without also sacrificing
platform-independence, you could do something like:
>
> fullscreen = not fullscreen
> if not pygame.display.toggle_fullscreen():
>    if fullscreen:
>        window = pygame.display.set_mode(size, FULLSCREEN)
>    else:
>        window = pygame.display.set_mode(size)
>
> That's of course assuming that the most recent comment in the docs (from 12/30/2010) is right about what
pygame.display.toggle_fullscreen returns.
>
> --- On Wed, 5/9/12, Bartosz Debski <bartosz@...> wrote:
>
>> From: Bartosz Debski <bartosz@...>
>> Subject: Re: [pygame] Resetting display
>> To: pygame-users@...
>> Date: Wednesday, May 9, 2012, 11:31 AM
>> Well, i haven't tried to be honest
>> but will toggle_fullscreen work
>> under Windows ?
>>
>> On Tue, May 8, 2012 at 10:32 AM, Radomir Dopieralski
>> <pygame@...>
>> wrote:
>> > On Tue, May 8, 2012 at 11:12 AM, Bartosz Debski <bartosz@...>
>> wrote:
>> >> toggle_fullscreen will work only under X11.
>> >
>> > I didn't know you could run pygame outside of X11.
>> >
>> > [...]
>> >
>> > --
>> > Radomir Dopieralski
>>

--

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