Facilities

Most of the following facilities are used for teaching and research in both Acoustic Technology and Hearing Systems research groups.


1) The Audio-Visual-Immersion-Lab (AVIL) is a virtual environment for hearing research.  So far the system consists of 64 loudspeakers arranged in a full sphere, 4 subwoofers, and a head-mounted display. The setup is housed in a purpose-built anechoic chamber. The system enables a realistic reproduction of the acoustics of real rooms, and the playback of spatial audio recordings. The AVIL is used to investigate aspects of spatial hearing systematically, and allows head movements and the usage of hearing aids or cochlear implants during the measurements.
Photo : Joachim Rode.

2) A psycoacoustics lab and a communication lab with six acoustically shielded listening booths in total used for audiometry, psychoacoustic and speech intelligibility experiments where sound is typically presented over headphones and for cochlear implant experiments. Photo: Joachim Rode 

3) One electrophysiologylab for measurement of electroencephalography (EEG) and otoacoustic emissions. Photo: Joachim Rode.

4) An audiological clinic with equipment for audiometry, ear analysis, otoscopic inspection, and hearing aid measurements. Photo: Joachim Rode


5) A listening room according to the IEC 268-13 standard for e.g. loudspeaker comparison in order to simulate an everyday living room listening environment. Photo: Eva Helena Andersen.

Anechoic room (Photo: Eva Helena Andersen)
6) Two anechoic rooms: a large and a small one. These rooms are, e.g., used for recording of speech and music stimuli which are later used in psychoacoustic tests. Photo: Eva Helena Andersen.

The spherical microphone array consists of 52 individual microphones (Photo: Nicolas Le Goff)7) The spherical microphone array consists of 52 individual microphones. Each microphone measures the acoustic environment at a slightly different position. From these measurements, it is possible to recreate the sound field that was at the position of the sphere. Photo: Nicolas Le Goff.

8) Head and Torso Simulator (HATS) is a mannequin with built-in ear and mouth simulators that provides a realistic reproduction of the acoustic properties of an average adult human head and torso. The mannequin simulates the changes that occur to sound waves as they pass a human head and torso such as the diffraction and reflection around each ear. Photo: Nicolas Le Goff.

A 64-channel EEG recording system and a soundproof and electronically shielded listening booth (Photo: Joachim Rode)
9) A 64-channel EEG recording system and a soundproof and electronically shielded listening booth. This system is used for objective measures such as auditory evoked potentials. Photo: Joachim Rode.

10) An otoacoustic emission (OAE) recording system. This system is flexible and allows us to investigate OAE recording techniques with advanced stimuli. Photo: Alexandre Chabot-Leclerc

11) The Artificial ear model simulates what happens in the human ear.It consists of couplers that have been designed for measurements in the audiometric and related fields.They enable electroacoustic measurements on either insert earphones or headphones to be carried out under well-defined acoustic conditions, which are of great importance for the comparability of different designs and the reproducibility of measurements. Photo: Nicolas Le Goff.

A master hearing-aid platform (Photo: DTU Elektro)

12) A master hearing-aid platform. This is a fully flexible system by which we can systematically test effects of state-of-the-art hearing-aid signal processing, as well as develop innovative compensation strategies.