[sdiy] Audio playback chips as sample players for drums

[Jean-Pierre Desrochers]

The Wav Trigger has an adjustable track fade time and level on each ‘common’ released (note-off) tracks.

 

The WAV Trigger User Guide (page 11) tells how to set it.

https://cdn.sparkfun.com/assets/1/c/9/a/9/WT_UserGuide_20230114.pdf

 

The example shown is while using the serial communication protocol.

I left the board’s track fade settings untouched at power up.

The ‘by default’ settings are just ok for me.



 

> -----Message d'origine-----

> De : Roman Sowa <modular at go2.pl>

> Envoyé : 28 juillet 2025 08:39

> À : Jean-Pierre Desrochers <jpdesroc at oricom.ca>; 'Scott Bernardi'

> <scottbernardi55 at gmail.com>; 'SDIY List' <synth-diy at synth-diy.org>

> Objet : Re: [sdiy] Audio playback chips as sample players for drums

> 

> Does it alow for any fade-out after note-off or does it simply cuts the soudnd

> abruptly?

> 

> Roman

> 

> W dniu 2025-07-23 o 22:53, Jean-Pierre Desrochers via Synth-diy pisze:

> > Jamie Robertson’s WAV Trigger mini sampler..

> >

> > Can play up to 14 simultaneous .WAV files (16bits uncompressed stereo

> > PSM)

> >

> > Low latency (8 msec)..

> >

> > Can be played via :

> >

> >   * MIDI serial protocol (TTL levels inputs)

> >   * Specific 57.6kbps serial protocol (TTL levels inputs)

> >   * using 16 digital inputs (TTL levels inputs)

> >

> >  <https://www.robertsonics.com/s/WT_UserGuide_20230602.pdf> https://www.robertsonics.com/s/WT_UserGuide_20230602.pdf

> > < <https://www.robertsonics.com/s/WT_UserGuide_20230602.pdf> https://www.robertsonics.com/s/WT_UserGuide_20230602.pdf>

> >

> >  <https://www.robertsonics.com/wav-trigger> https://www.robertsonics.com/wav-trigger

> > < <https://www.robertsonics.com/wav-trigger> https://www.robertsonics.com/wav-trigger>

> >

> >  <https://www.youtube.com/watch?v=UUkcs_XL5x0&t=65s> https://www.youtube.com/watch?v=UUkcs_XL5x0&t=65s

> > < <https://www.youtube.com/watch?v=UUkcs_XL5x0&t=65s> https://www.youtube.com/watch?v=UUkcs_XL5x0&t=65s>

> >

> > I use this board to actually play sampled Hammond organ pedal keys in

> > my Hammond organ RT Pedal SOLO simulator box.

> >

> > All the played files are called using a PIC micro that sends 57.6kbps

> > commands to the WAV Trigger after reception of MIDI information

> > (31.25kbps).

> >

> > This board is AWESOME !!

> >

> > *De :*Synth-diy < <mailto:synth-diy-bounces at synth-diy.org> synth-diy-bounces at synth-diy.org> *De la part de*

> > Scott Bernardi via Synth-diy *Envoyé :* 23 juillet 2025 14:59 *À :*

> > SDIY List < <mailto:synth-diy at synth-diy.org> synth-diy at synth-diy.org> *Objet :* [sdiy] Audio playback

> > chips as sample players for drums

> >

> > I've seen a number of these sample/wave/mp3 players that use either

> > Flash memory or SD cards for storing the files. They look tempting to

> > create a sample player module. Has anybody played with these? Is the

> > latency acceptable enough to do drum samples?  How much latency can

> > you have before it becomes noticeable?

> >

> > Something with a minimum of 8 triggers to kick off  different samples

> > that can be played simultaneously.  I've seen some where you give the

> > files a number, and a trigger can be associated with a numbered file.

> > With a microcontroller you could have an interface to pick and

> > audition the samples you associate with the triggers.

> >

> >

> > ________________________________________________________

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