Re: [pygame] Sound still glitchy in 1.8.1rc1 on Ubuntu

[Gary Bishop <gb@xxxxxxxxxx>]

1. No, diff. That sleep is just waiting for the audio to terminate.

2. Yes, fooling with the options to pygame.mixer.pre_init seems to 
always be the not very satisfactory answer. My understanding of the goal 
for 1.8.1 was to eliminate that requirement. Having users fool with 
numbers on a hit or miss basis is a sure way to drive them away.

That said, I found that forcing the rate to 44100 instead of letting it 
be at 22050 where it apparently went by default makes it sound better. 
Makes no sense that a higher sampling rate cures it but it appears to.

3. Yes, the real code pumps the event queue. That was just a boiled down 
demo case.

Thanks
gb

claxo wrote:
> I'am not an expert in pygame audio but:
>
> 1. It makes any diference if you reduce the sleep time? 
> Say, 1/30 sec by example.
>
> 2. It makes some diference if you initialize the mixer with diferent buffer
> sizes ? 
> That was pointed to me by Patrick Mullen time ago, and the advice
>  periodically resurfaces. Sometimes, especially with old hardware,
> increasing the buffer size alleviates the problem ( at the cost of more
> latency, If i remember well).
>
>  ex: 
>      # last param is buffer size 
>      pygame.mixer.init(44100, -16, True, 1024)
>
> 3. Your real code really dont pump the event queue? Maybe .get_busy()
> updates all necesary inner state, but a lot of pygame functionallity
> depends on the event queue being pumped.
>
> HTH
>
> --- claxo