The hearpiece is an electro-acoustic earpiece for research and development on assistive hearing devices and hearables. It includes two balanced armature drivers as well as four microphones in each side, which are built into a one-size-fits-all acrylic shell. The earpiece fits in about 90% of all ears and has a fit comparable to an individual earmould. It features custom transducer positioning at different positions inside a vent, as well as a microphone inside the ear canal, which opens up many possibilities for signal processing. The earpiece is available both in a vented as well as an occluded configuration, as well as with and without microphone pre-amplifiers included in the ear.
Specifications (click for a detailed technical documentation)
A scientific paper containing a detailed description and acoustic evaluation is available here.
A database of individual transfer functions measured with the Hearpiece is available here.
|Microphone sensitivity||-38 dB V/Pa|
|Supply voltage||3.0 - 3.6 V|
|Output sensitvity||100 - 110 dB SPL/V @1kHz depending on configuration|
|Max. output||110 dB|
Versions (Price incl. VAT)
|Direct connection||699 €|
|With microphone pre-amplifiers||999 €|
|open, ca. 1.5mm²||Black||Sub-D 9 connector, screwable|