Curated by RSF Research Staff
Astronomy accessible for people with hearing loss
In the USA alone there are approximately 11 million people with serious hearing problems. It is estimated to be 360 million around the globe. Astronomers at the University of California, Riverside, Gillian Wilson and Mario De Leo-Winkler (now director of the National System of Researchers SNI of Mexico), have teamed with teachers at the California School for the Deaf, Riverside (CSDR) to design an astronomy workshop for students with hearing loss. Their astronomy outreaching activities, which include astrophotography competitions, traveling astronomy exhibitions, workshops and more, have already touched 40,000 people. And now, with this initiative, feedback was collected from over 80 students who participated in this particular and special workshop.
As the authors of the research article The Vibrating Universe: Astronomy for the Deaf have pointed out, the topic chosen for the workshop was astronomy because the field is very appealing to “act as a portal of K-12 engagement in science” given the richness of images and interdisciplinary nature of the subject. On the other hand, vibrations – the sense of touch - were chosen as a translating language.
As mentioned in the article, the utilized sounds related to the Universe where classified in three different categories, the records of which have been made publicly available by several space agencies and researchers:
Deaf individuals have a more developed sense of touch than hearing people due to their brain 'rewiring' in a process called neuroplasticity
- natural sounds within the standard human hearing range (20 Hz–20 kHz), recorded directly from the source, without the need to manipulate or interpret them. For example, the sound of a rocket launch, provided by The National Aeronautical and Space Agency (NASA) and the European Space Agency (ESA)
- enhanced sounds: energy produced within the electromagnetic spectrum other than the standard human hearing range, requiring manipulation to bring it within this range. For example: low-frequency radio emissions from the Sun, high-frequency ultraviolet emissions from stars
- sonified data: data converted into sounds through parameters specified by the user (a process known as sonification). For example: temperature variations in the cosmic microwave background (remnants of the Big Bang). Researchers such as Paul Francis (Australian National University), John G. Cramer (University of Washington), Robert Alexander (University of Michigan), and Travis Metcalfe5(Space Science Institute) produced sonifications based on asteroseismology, the cosmic microwave background, solar storms, and supernovae.
Computer-rendered animations and videos are also publicly available from the same sources.
CSDR has a multisensory sound lab that converts sound into other mediums such as vibrations and light that can be experienced by deaf individuals. The lab consists of eight interlocking floor panels on top of foam blocks that vibrate when sound is transmitted through them, with loudspeakers directly pointing at the interlocking floor panels to amplify the transmitted vibrations produced by sound. Students either sit or stand on the floorboards to feel such vibrations.
The crucial part of the initiative relied on accounting for the most adequate sounds. Criteria for selection were:
- very high-frequency sounds that produce few or no vibrations were discarded
- sounds which are either too highly pitched for students using a cochlear implant (CI), or which require excessive power to produce vibrations, were discarded
- vibrations should be clearly distinguishable from one another; cosmic phenomena with low frequencies and sufficiently distinguishable patterns
The final sample of 19 sounds was then developed into a full audio–visual presentation which was also translated by American Sign Language.
The material and experience has been made public by the team, in order to help educators worldwide engage the deaf community in STEM activities. STEM is a curriculum based on the idea of integrating four specific disciplines — science, technology, engineering and mathematics — into a cohesive interdisciplinary and applied learning platform based on real-world applications: https://www.livescience.com/43296-what-is-stem-education.html
By: Ines Urdaneta, Research scientist at Resonance Science Foundation