Sound skips/lags when frame rate is near 50Hz

Versatile Commodore Emulator

Brought to you by: blackystardust, gpz

#594 Sound skips/lags when frame rate is near 50Hz

Milestone: v3.6

Status: closed-fixed

Owner: dqh

Labels: None

Port:

Category: Sound

Updated: 2021-12-30

Created: 2015-01-05

Creator: Zeraphine

Private: No

Hello,

everytime i start a game, the sound is lagging or skipping after a while. Sometimes its when i am pressing the joystick button, sometimes it appears only when i am standing.

I have tested all other sound configuration files, no effect!

Discussion

Zeraphine - 2015-01-05

http://youtu.be/SKufvyGvX0A

I have created a video for you, you hear it at the beginning, the first 10 seconds, and then after!

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gpz - 2015-10-30

status: open --> open-need-info
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gpz - 2015-10-30

please test again with a recent build

it would also be nice if you could work out a way to reliably reproduce this problem

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Jeff Wode - 2015-11-14

I also have this same issue, i've had it since the very early builds of v.2.4.x up until the latest build. It seems impossible to run emulation in 50hz (using ReSid) without the sound stuttering/grating. Usually it takes about 10-30 seconds before the stuttering happens. It runs perfect in 60hz display.

I have all the latest directx components installed along with the latest driver for my soundcard. Along with this I have tried different sound settings, changing synchronization method, sample rate, sound buffer size etc.

Perhaps ReSid may be causing this issue? If I use Fast SID sound emulation is always fine in both 50/60hz.

I use a HDMI cable connected to a large HD-TV which supports 50/60hz.

I have this issue on 3 different machines.

Laptop under windows 7 (HDMI 50hz)
Desktop under windows 7 (HDMI 50hz)
Another desktop under windows vista (HDMI 50hz)

I really hope this issue gets resolved because VICE is amazing! Having smooth scrolling at 50hz and good sound is the ultimate c64 experience for me :-)

Last edit: Jeff Wode 2015-11-14

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Zeraphine - 2016-05-20

ReSID is not the problem! It must be different.

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gpz - 2018-05-18

summary: Sound skips/lags --> Sound skips/lags when frame rate is near 50Hz

status: open-need-info --> open

Version: v2.4.x --> v3.x

Port: Windows -->

Category: x64 --> Sound
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gpz - 2018-05-18

this is a known bug in the sound sync - it doesnt work well when the framerate is less than the nominal framerate of the C64 - ie 50.125Hz (PAL)

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gpz - 2021-10-25

assigned_to: dqh
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gpz - 2021-10-25

@dqh this can be closed, right?

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dqh - 2021-10-26

status: open --> closed-fixed
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