We are all acutely aware of the fact that in order to stay healthy we need to exercise. We are especially aware after a long cold winter or summer vacation. While the list of benefits we gain from physical activity including longer life, improved vitality and weight-loss, many of us still don't do it.
Of the many hearing tests, speech is one of the most fundamental in the test battery. Unfortunately, it has been shown to be one of the tests that audiologists conduct without using procedures that have been shown to be valid and reliable (Martin & Pennington, 1971; Martin & Forbis, 1978; Martin & Sides, 1985; Martin & Morris, 1989; Martin et al, 1994, 1998; Wiley et al,1995). The continued use of monitored live voice (MLV) for speech stimuli presentation is prevalent , despite ample literature indicating why recorded speech should be preferred. (Carhart, 1946, 1965; Brandy, 1966; Kreul et al, 1969; Penrod, 1979; Hood & Poole, 1980; Mullennix et al, 1989; Roeser & Clark, 2008; Wilson & McArdle, 2008; Katz, 2014).
World Hearing Day was a little over a month ago. On the day, WHO released their estimates of the numbers they predict will have disabling hearing loss by 2050.
While the numbers they predicted were startling, it didn't seem as though it garnered enough of a reaction.
They estimated that 900 million people will suffer from disabling hearing loss by 2050. That is up from the current number of 466 million.
Breath in.. Breath out..
Most clinicians break out in a cold sweat when it comes to masking. “Am I doing this correctly, is it effective?”. Take a deep breath and look no further.
To understand it, we must first understand the science and reasoning behind masking in audiology. We must also cover some of the related concepts such as interaural attenuation (IA) and the occlusion effect (OE). You may already know these terms, but let’s see if we can shed a little light on how they all work together.