Can you hear this?

22 06 2010

How good is your hearing? Tee hee. This one’s a damn sight more interesting than the RNID hearing test.

This link takes you to a simple hearing test. Can you hear this? I thought this is an interesting one to do with a new cochlear implant. The site has a list of tones that go from 8Hz to 22,000Hz. It’s usual for people over 25 to not be able to hear above 15kHz. What Hz can you hear up to, or can you hear all of them? I was able to hear all of them. Woo woo! I thought 19, 20 and 21 kHz sounded horrific – I could practically feel them. They all sounded similar after 8Khz as the implant is only capable of a maximum 9Khz stimulation, but I was certainly picking up the sampling.

It is known that listening to iPods at loud volumes for long periods of time can damage your hearing to a profound level and permanently. It’s nice that I don’t have to worry about that one anymore. As we age, we naturally lose our high frequency hearing gradually. This is why, sometimes, you walk in on your mother and she has the TV on full blast and asks you to speak up as she can’t hear you (or the TV). Then swears blind that she doesn’t have a hearing problem.

It can be difficult to differentiate between loudness levels with a cochlear implant. My perception of sounds are different as they are new and so seem much louder. Turning the pages of a book seems louder than a speaking voice.  A ticking clock seems as loud as chucking a book on a table. It’s hard work listening to all this over-stimulation! This test has a series of sine waves – can you hear which is louder? I was very happy to be able to get Q1 and Q3 correct.

Here’s a harder test. Can you tell the difference between two MP3 sound clips, one recorded at 320kbps and the other at 128kbps in this MP3 sound quality test? Nope, I couldn’t tell the difference either!

On the subject of music, there is a new site for research into cochlear implants and music appreciation – swing right on over to Hearing Organised Sound.

And finally, here’s something for you hearies (and interested deafies). I discovered a hearing loss simulation for a cochlear implant and a hearing aid. A bit of environmental sound, a bit of speech, a bit of music. To me, a new kid on the cochlear implant block, and very used to using hearing aids, they sound like pretty accurate simulations. What do you think?

Time to get back to the headphones and rock on!

Deaf employment research project

14 11 2008

Message from Simeon Klein – if you can assist, please email him at simeonklein87@ uk

Hi my name is Simeon Klein I am a current 3rd year student at Portsmouth University. Both my parents are deaf, you may know my Dad, Herbert Klein? He recommended this group for my research into the quality of working life and quality of communication for deaf people in employment. I’d like to discuss with the group admin if this is possible. My research consists of questionnaires which will be translated into BSL friendly English by my Dads work in the NHS, the questionnaire will be in a email sent to people.

My research is new because, it is the first to question how conditions are of deaf people in terms of their emotions and feelings, using this information a full data analysis will be conducted to view any trends or patterns developing. As this is done through my University participants details are highly confidential, and there are very strict guidelines on ethics. I hope you feel my questionnaire would not be using deaf people for scientific benefit but it is more a research into the wellbeing of deaf employees. I would be more than happy to send you a detailed analysis for the group to read and I would be more than happy to include discussion that the research brings up into my report. Finally you would be fully acknowledged in my report of your involvement.

Thank you very much for your time
Simeon Klein