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SDL_OpenAudioDevice - SDL Wiki
https://wiki.libsdl.org/SDL_OpenAudioDevice#:~:text=Good%20values%20seem%20to%20range%20between%20512%20and,and%20cannot%20fill%20the%20audio%20buffer%20in%20time.
Windows 10 SDL high latency · Issue #4315 · …
https://github.com/LMMS/lmms/issues/4315
Using SDL on windows 10 I get high latency (~65ms on the built-in sound card, a horrendous ~130ms on an external Focusrite Scarlett). With 1.1.3 and the libportaudio.dll substitution trick and ASIO I get no audible latency at all (on either sound card, with ASIO4ALL for the built-in, and Focusrite ASIO driver for the Scarlett).
Playing a Square Wave with SDL: Handmade Penguin …
https://davidgow.net/handmadepenguin/ch8.html
SDL doesn't have a maximum amount of audio data we can queue, though as it increases latency, we do want to limit it ourselves. So how much data do we want to write ahead? We need to always have at least the (SDL) buffer size amount ready, and we want to have some maximum amount we write ahead.
Improving Audio Synchronisation: Handmade Penguin …
https://davidgow.net/handmadepenguin/ch19.html
We can work out how much latency we have using the SDL_GetQueuedAudioSize () function, which returns the number of bytes of queued audio. Divide it by the sample rate, sample size and number of channels, and you can get the current latency.
Windows 10 SDL latency issues - LMMS • Forums
https://lmms.io/forum/viewtopic.php?t=27236
When I try any of the 1.2.0 versions (especially the test builds with audio recording) I only have SDL as an option. No matter what I try, I get high latency (~65ms on the built-in sound card, a horrendous ~130ms on an external Focusrite Scarlett). …
Audio Examples - Simple DirectMedia Layer
https://www.libsdl.org/release/SDL-1.2.15/docs/html/guideaudioexamples.html
Opening the audio device. SDL_AudioSpec wanted; extern void fill_audio(void *udata, Uint8 *stream, int len); /* Set the audio format */ wanted.freq = 22050; wanted ...
SDL :: View topic - SDL audio, DirectSound, and Win 7
https://forums.libsdl.org/viewtopic.php?p=21153
Hello, SDL developers and users. I'd like to use SDL to do low-level sound output with precise timing. I'll be filling the sound buffer by hand, and when my program says "go", I'd like it to start playing with very low latency--this is my main requirement. I'm on Windows, and up till now I've been using DirectSound.
SDL2::audio - SDL Audio Functions - metacpan.org
https://metacpan.org/pod/SDL2::audio
audio_buf will be filled with a pointer to an allocated buffer containing the audio data, and audio_len is filled with the length of that audio buffer in bytes. This function returns NULL if the .WAV file cannot be opened, uses an unknown data format, or is corrupt; call SDL_GetError( ) for more information.
Audio low latency with Python - Stack Overflow
https://stackoverflow.com/questions/20503978/audio-low-latency-with-python
Audio with SDL is a nice overview, although it seems a bit out of date. The first thing to consider is what audio driver you're using. For example, on many linux systems, ALSA can't do low-latency sound, which means that anything you write that ultimately talks to ALSA can't do it either.
SDL_QueueAudio - SDL Wiki - Simple DirectMedia Layer
https://wiki.libsdl.org/SDL_QueueAudio
SDL offers two ways to feed audio to the device: you can either supply a callback that SDL triggers with some frequency to obtain more audio (pull method), or you can supply no callback, and then SDL will expect you to supply data at regular intervals (push method) with this function.
SDL_OpenAudioDevice - SDL Wiki
https://wiki.libsdl.org/SDL_OpenAudioDevice
Smaller values reduce latency, but can lead to underflow if the application is doing heavy processing and cannot fill the audio buffer in time. Note that the number of sample frames is directly related to time by the following formula: ms = (sampleframes*1000)/freq
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