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SparkFun WAV Trigger

Regular price $0.00 $51.80 Sale

Key Features

  • Supports both SDSC (up to 2GB) and SDHC (up to 32GB) type microSD cards
  • Polyphonic! Play and mix up to 14 stereo tracks independently and simultaneously
  • Trigger-to-sound delay: 8 msecs typ, 12 msecs max
  • Real-time playback rate control and MIDI Pitch Bend
  • Multiple random trigger ranges

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.

MIDI allows you to use the WAV Trigger as a polyphonic sampling synthesizer to play your own sounds from any MIDI keyboard controller. 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.

Item Specific
True line-level stereo output: 2.1V RMS ground centered, 100dB SNR
On-board mono audio amplifier and speaker connector: 2W into 4 Ohms, 1.25W into 8 Ohms
Volumes adjustable from +10dB to -70dB in 0.5dB increments
Firmware volume fades (attacks & decays) and cross-fades
A dedicated “Play” status digital output pin
3.3V and 5.0V output pins