libretro / libretro/RetroArch

[Feature Request] Fast-forward with real-time audio (like Azahar)

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feature request
Dominant language
C
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Description

Hi,

I would like to suggest a feature that would greatly improve the fast-forward experience in RetroArch.

Currently, when using fast-forward, audio is either sped up or disabled, which can make gameplay feel less natural — especially in games where audio cues matter.

Some emulators (like Azahar for 3DS) offer an option to fast-forward gameplay while keeping audio at normal speed (real-time audio). This results in a much smoother and more comfortable experience.

It would be great to have a similar option in RetroArch, ideally as:

A toggle in Audio settings (e.g. "Real-time audio during fast-forward")
Or a core-level option when applicable

This would be especially useful for systems like GB, GBC, GBA, and others where fast-forward is frequently used.

Thanks for your amazing work on RetroArch!

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Research direction

No files, tests, or entry points are named. Start by locating RetroArch’s fast-forward handling and Audio settings, then determine whether real-time audio belongs in the frontend or requires core support. Done means a selectable option that keeps audio at normal speed during fast-forward, with appropriate coverage.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
audio-video-rtc
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
35/100

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