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Psychtoolbox-3 - PsychPortAudio(‘CreateBuffer’)
http://psychtoolbox.org/docs/PsychPortAudio-CreateBuffer
bufferhandle = PsychPortAudio(‘CreateBuffer’ [, pahandle], bufferdata); Create a new dynamic audio data playback buffer for a PortAudio audio device and fill it with initial data. Return a ‘bufferhandle’ to the new buffer. ‘pahandle’ is the optional handle …
Psychtoolbox-3 - PsychPortAudio(‘FillBuffer’)
http://psychtoolbox.org/docs/PsychPortAudio-FillBuffer
PsychPortAudio(‘CreateBuffer’, …). Its content must satisfy the same constraints as in case of passing a matrix. The content will be copied from the given buffer to the standard audio buffer, so it is safe to delete that source buffer if you want. ‘streamingrefill’ optional: If set to 1, ask the driver to refill the buffer
Psychtoolbox-3 - PsychPortAudio(‘RefillBuffer’)
http://psychtoolbox.org/docs/PsychPortAudio-RefillBuffer
PsychPortAudio(‘RefillBuffer’, pahandle [, bufferhandle=0], bufferdata [, startIndex=0]); Refill part of an audio data playback buffer of a PortAudio audio device. ‘pahandle’ is the handle of the device whose buffer is to be filled. ‘bufferhandle’ is the handle of the buffer: Use a …
Psychtoolbox-3 - PsychPortAudio(‘GetAudioData’)
http://psychtoolbox.org/docs/PsychPortAudio-GetAudioData
a sound buffer of at least 2 seconds for some security headroom. If you know that the recording time of each recording has an upper bound then you can allocate an internal buffer of sufficient size and fetch the buffer all at once at the end of a recording. ‘cstarttime’ this is an estimate of the system time (in seconds) when the very
PsychPortAudio('Fillbuffer') for continous stream paradigm ...
https://psychtoolbox.discourse.group/t/psychportaudio-fillbuffer-for-continous-stream-paradigm-please-help/3376
PsychtoolboxVersion - 3.0.16 Ubuntu 20.04 LTS , MATLAB 2020a & Ubuntu 18.04, MATLAB 2019a XPS with intel i7-3537u, intel GPU Hello Community, I can’t figure out how to append to the buffer while in playback. From what I understood from the Documentation it should be as easy as pahandle = PsychPortAudio('Open', 0, 1, 4, 44100, 1); x = []; % a sound of several …
Psychtoolbox-3 - PsychPortAudio
http://psychtoolbox.org/docs/PsychPortAudio
PsychPortAudio is a special sound driver for PTB-3. It is a replacement for all other sound drivers and PTB’s old SND() function. PsychPortAudio provides the following features: Allows instant start of sound playback with a very low onset latency
Psychtoolbox-3/BasicSoundScheduleDemo.m at master ...
https://github.com/Psychtoolbox-3/Psychtoolbox-3/blob/master/Psychtoolbox/PsychDemos/BasicSoundScheduleDemo.m
PsychPortAudio (' Start ', pahandle, 2, GetSecs + 2, 1); % Streaming refill with content of buffer(2). Append the content to the % currently playing sound stream: PsychPortAudio (' FillBuffer ', pahandle, buffer (2), 1); % Streaming refill with content of buffer(4): PsychPortAudio (' FillBuffer ', pahandle, buffer (4), 1); % Wait for end of ...
DelayedSoundFeedbackDemo MATLAB internal error ...
https://psychtoolbox.discourse.group/t/delayedsoundfeedbackdemo-matlab-internal-error/3373
PsychPortAudio-WARNING: Underrun of audio playback buffer detected during streaming refill at approximate play position 2.362132 secs [3.219955 msecs behind]. Sound will be skipped, timing may be wrong and audible glitches may occur!
Introduction to PsychToolbox in MATLAB
http://www.jonaskaplan.com/files/psych599/Week6.pptx
Step 3: Fill the audio buffer. PsychPortAudio('FillBuffer', pahandle, bufferdata); This is analogous to drawing on the back buffer with the Screen command. We fill the buffer now, but it will not be heard until we play it.
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