Description: The WAV Trigger is a unique high-fidelity polyphonic audio player with surprising capabilities. Supporting up to 2048 uncompressed 16-bit, 44.1kHz wav files – the same quality as an audio CD – the WAV Trigger can play and mix up to 14 stereo tracks simultaneously and independently, with very low latency. Tracks can be controlled via 16 programmable trigger inputs, or by using a native serial control protocol or even MIDI.
Trigger inputs can be connected directly to switches and buttons, or to digital outputs from sensors or another microcontroller. Alternate functions can be specified using a free cross-platform GUI application, and allow triggers to play sequential or random tracks, pause and resume groups of tracks and even control volume. An Arduino library allows for complex serial control like real-time mixing, starting multiple tracks in sample-sync and smooth cross-fading between tracks.
On-board sample rate conversion allows for smoothly changing playback speed/pitch from 0.5x to 2x. in real-time.
MIDI allows you to use the WAV Trigger as a polyphonic sampling synthesizer to play your own sounds from any MIDI keyboard controller. MIDI Channels and Note numbers are mapped to track numbers, and MIDI Controllers adjust volume as well as attack and release times. MIDI Program Change is supported to switch between up to 16 banks of 128 sounds. The WAV Trigger audio engine even implements, pitch bending, voice stealing (oldest playing voices are used for new MIDI Notes when all 14 voices are being used), note attack (fade-in), note release (fade-out) and latency averages 8 ms.
The WAV Trigger supports both SDSC (up to 2GB) and SDHC (up to 32GB) type microSD cards.
Check the link in the documents below to keep up with the latest Firmware updates!
Note: This product is a collaboration with Robertsonics. A portion of each sales goes back to them for product support and continued development.
Based on 7 ratings:
3 of 3 found this helpful:
I’ve been looking for a music synthesizer for several of my projects and found the existing MIDI synth chips less than pleasant to listen to; lots of noise and poor sound quality. The WAV Trigger is simply amazing for me. To be able to select among 2k sounds, at CD quality, and play up to 12 at once for less than $50 is simply amazing. The software to test and change the trigger options is great. You can even operate the board without a microprocessor by connecting to the 16 channels of trigger input. The only additional feature I’d ask for is to be able to dynamically change the balance (the relative Right/Left amplitude). I think this board will keep me busy for the next 6 months of research and development.
1 of 1 found this helpful:
Polyphonic and ease of use. This fill the needs of my microdrum project perfectly. Thanks for your hard work.
We only used it in the most simple fashion but basically plug and play. Thank you.
easy to start any sounds project … it’s helpful to my project and I waiting now for FTDI to get in deep of wonderful sparkfun products
I built exhibits at a Museum… when you have to fade audio in and out… layer audio… control the volume… all via a pretty easy serial protocol. great product Sparkfun!
The Wav Trigger is working perfectly.
I’m working to make electronic drums.
The Wav Trigger’s strong points, as advertised, is that it can play polyphonic sounds, playing .wav files (which is really better than MP3, as there is no delay due to the MP3 format).
I think it could be useful to develop an Arduino shield version of the Wav Trigger, as it could avoid using a computer to change the sounds of the pins. I planned to use simple press buttons + a LCD to change the tracks, but I m not sure I can do it with the WAV Trigger.
Anway, it’s a good product.
Two WAV Triggers are operated just to trigger pre-recorded WAV files by signals from a Raspberry Pi running Python GPIO code. This limited the number of sounds. However, thanks to excellent support on a forum from Robertsonics, a third WAV Trigger is operated by two wires from an Arduino which decodes six bits and an interrupt bit from Python running on a second Raspberry Pi. This provides five polyphonic octaves (and with more bits could do more) of custom sounds recorded from Mathematica code than can run on a Raspberry Pi. And yes, latency is low even through the layers of code.