Wave Shield for Arduino Kit v1.1, RoHS
COM-12656 - EasyVR Shield 2.0 - Voice Recognition Shield, RoHS
DEV-10628 - MP3 Player Shield, OSHW In Fritzing Library, SparkFun
The shield provides the standard MIDI port circuits, incl. 5-pin DIN connectors, pto-isolated MIDI input, LEDs on D6 and D7, pushbuttons on D2, D3 and D4, and rotary potentiometers on A0 and A1. DEV-12898
The Spectrum Shield enables your Arduino with the capability of splitting a stereo audio input into 7-bands per channel. You can then read the amplitude of each channel using the ADC on your Arduino allowing you to control everything from LEDs to motors, pumps to relays, or even fire, all with sound. DEV-13116
Analog Test Shield for Arduino Development, AD/DA. Integrates DAC circuit and amplifier circuit.