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Evolution of Soundfield for Classrooms
Dave Ellison – Ellison Northwest & Listen Technologies
• National Diffusion Network – founded 1974
• National Diffusion Network – founded 1974
• First Federal program to identify new education
concepts
• 1978 – MARRS Project initiated under NDN
• 1978 – MARRS Project initiated under NDN
• Identified that approximately 30% in grades 3-6 have
hearing loss – failing a 15 dB hearing screening
• 1978 – MARRS Project initiated under NDN
• Identified that approximately 30% in grades 3-6 have
hearing loss – failing a 15 dB hearing screening
• Study of students with mild or minimal hearing loss to
evaluate soundfield as a means to keep them in the
“mainstream” instead of Special Education programs
• 1978 – MARRS Project initiated under NDN
• Identified that approximately 30% in grades 3-6 have
hearing loss – failing a 15 dB hearing screening
• Study of students with mild or minimal hearing loss to
evaluate soundfield as a means to keep them in the
“mainstream” instead of Special Education programs
• Divided into groups with and without amplification
MARRS Project Findings:
MARRS Project Findings:
• Test scores improved 10% - 30% over unamplified
rooms!
MARRS Project Findings:
• Test scores improved 10% - 30% over unamplified
rooms!
• Significant cost savings over special programs
MARRS Project Findings:
• Test scores improved 10% - 30% over unamplified
rooms!
• Significant cost savings over special programs
• Eliminates the stigma for students for Special Ed
1982 – next MARRS study
1982 – next MARRS study
• Found improved scores in spelling tests among 131
children 2nd and 3rd grade with and without hearing
loss
1982 – next MARRS study
• Found improved scores in spelling tests among 131
children 2nd and 3rd grade with and without hearing
loss
• First time a “negative” was identified – students with
a minimal hearing loss were viewed by the teacher
as impulsive, overactive and having a weak attention
span
1983 – the “Tape Recorder Study” in kindergarten
1983 – the “Tape Recorder Study” in kindergarten
• HiFi recorder placed on teachers desk playing word
lists
1983 – the “Tape Recorder Study” in kindergarten
• HiFi recorder placed on teachers desk playing word
lists
• 25 words played – recorder at 12 feet from students
1983 – the “Tape Recorder Study” in kindergarten
• HiFi recorder placed on teachers desk playing word
lists
• 25 words played – recorder at 12 feet from students
• Normal hearing kids: 91% accuracy in testing
1983 – the “Tape Recorder Study” in kindergarten
• HiFi recorder placed on teachers desk playing word
lists
• 25 words played – recorder at 12 feet from students
• Normal hearing kids: 91% accuracy in testing
• Hearing loss kids: 81% accuracy in testing
Recorder moved to CENTER of room….
Recorder moved to CENTER of room…
• Normal hearing kids increased to 98%
Recorder moved to CENTER of room…
• Normal hearing kids increased to 98%
• Hearing loss kids increased to 96%!!
Recorder moved to CENTER of room…
• Normal hearing kids increased to 98%
• Hearing loss kids increased to 96%!!
• When amplified, both groups tested at 98%
1986 – 40 classrooms in Midwest studied for
Soundfield
1986 – 40 classrooms in Midwest studied for Soundfield
• Across the board grades improved but…
1986 – 40 classrooms in Midwest studied for Soundfield
• Across the board grades improved but…
• This time teachers and administrators were examined
1986 – 40 classrooms in Midwest studied for Soundfield
• Across the board grades improved but…
• This time teachers and administrators were examined
• 85-90% of teachers found the system beneficial
1986 – 40 classrooms in Midwest studied for Soundfield
• Across the board grades improved but…
• This time teachers and administrators were examined
• 85-90% of teachers found the system beneficial
• 90% of administrators found the system beneficial
1986 – 40 classrooms in Midwest studied for Soundfield
• Across the board grades improved but…
• This time teachers and administrators were examined
• 85-90% of teachers found the system beneficial
• 90% of administrators found the system beneficial
• Why? Fewer teacher absences due to fatigue and laryngitis
1986 – 40 classrooms in Midwest studied for Soundfield
• Across the board grades improved but…
• This time teachers and administrators were examined
• 85-90% of teachers found the system beneficial
• 90% of administrators found the system beneficial
• Why? Fewer teacher absences due to fatigue and laryngitis
• Overall improved student test scores
1990 – 60 additional classrooms with soundfield studied
1990 – 60 additional classrooms with soundfield studied
• 40% reduction in students sent to LD programs
1990 – 60 additional classrooms with soundfield studied
• 40% reduction in students sent to LD programs
• More detailed hearing screening found 43% of students had some level of
hearing loss on any given day
1990 – 60 additional classrooms with soundfield studied
• 40% reduction in students sent to LD programs
• More detailed hearing screening found 43% of students had some level of
hearing loss on any given day
• 75% of primary-level LD students had a measurable hearing loss
1990 – 60 additional classrooms with soundfield studied
• 40% reduction in students sent to LD programs
• More detailed hearing screening found 43% of students had some level of
hearing loss on any given day
• 75% of primary-level LD students had a measurable hearing loss
• Children with developmental disabilities in primary school made
significantly fewer errors in word identification in soundfield
1990 – 60 additional classrooms with soundfield studied
• 40% reduction in students sent to LD programs
• More detailed hearing screening found 43% of students had some level of
hearing loss on any given day
• 75% of primary-level LD students had a measurable hearing loss
• Children with developmental disabilities in primary school made
significantly fewer errors in word identification in soundfield
• Overall, children were observed to be more relaxed and responded more
quickly in the amplified classroom environment
1993 – children in 12 classrooms were identified with ongoing hearing loss
and chronic ear problems
1993 – children in 12 classrooms were identified with ongoing hearing loss
and chronic ear problems
• Teachers, unaware of the target students, completed Screening Instrument
for Targeting Educational Risk in Secondary Student (SIFTER) forms for 6
rooms amplified and 6 rooms not amplified
1993 – children in 12 classrooms were identified with ongoing hearing loss
and chronic ear problems
• Teachers, unaware of the target students, completed Screening Instrument
for Targeting Educational Risk in Secondary Student (SIFTER) forms for 6
rooms amplified and 6 rooms not amplified
• SIFTER screening identified 30% of students with a hearing loss based
solely on the SIFTER forms – further confirming results
1994 – ESL students studied in amplified vs non-amplified
1994 – ESL students studied in amplified vs non-amplified
• ESL students experienced significant difficulty in non-amplified classrooms
in understanding spoken English
1994 – ESL students studied in amplified vs non-amplified
• ESL students experienced significant difficulty in non-amplified classrooms
in understanding spoken English
• Significant improvement in understanding spoken English when the
students were placed in an amplified classroom
1994 – ESL students studied in amplified vs non-amplified
• ESL students experienced significant difficulty in non-amplified classrooms
in understanding spoken English
• Significant improvement in understanding spoken English when the
students were placed in an amplified classroom
• MARRS project ended in 1995 when funding was cut off to NDN
2001 – No Child Left Behind Act – soundfield goes mainstream – picks up
where MARRS left off
2001 – No Child Left Behind Act – soundfield goes mainstream – picks up
where MARRS left off
• Mass deployment of inexpensive but somewhat limited products flooded
schools to realize the benefits of soundfield
2001 – No Child Left Behind Act – soundfield goes mainstream – picks up
where MARRS left off
• Mass deployment of inexpensive but somewhat limited products flooded
schools to realize the benefits of soundfield
• To learn more about Listenpoint please visit my booth today
System Structure
Assistive Listening Systems For the Hearing Impaired
Americans With Disabilities Act Title III
ADA Title III – Eliminates physical barriers to accessibility
ADA Title III – Eliminates physical barriers to accessibility
• Includes wheelchair ramps, handicapped parking stalls, door widths,
counter heights – all barriers to accessibility
ADA Title III – Eliminates physical barriers to accessibility
• Includes wheelchair ramps, handicapped parking stalls, door widths,
counter heights – all barriers to accessibility
• Also addresses those with a hearing disability
ADA Title III – Eliminates physical barriers to accessibility
• Includes wheelchair ramps, handicapped parking stalls, door widths,
counter heights – all barriers to accessibility
• Also addresses those with a hearing disability
• Those requiring ramps etc. - 1.5% of the general population
ADA Title III – Eliminates physical barriers to accessibility
• Includes wheelchair ramps, handicapped parking stalls, door widths,
counter heights – all barriers to accessibility
• Also addresses those with a hearing disability
• Those requiring ramps etc. - 1.5% of the general population
• Those requiring hearing assistance….
ADA Title III – Eliminates physical barriers to accessibility
• Includes wheelchair ramps, handicapped parking stalls, door widths,
counter heights – all barriers to accessibility
• Also addresses those with a hearing disability
• Those requiring ramps etc. - 1.5% of the general population
• Those requiring hearing assistance….
• SEVENTEEN percent of the general population
Effective September 2010 ALS is required….
Effective September 2010 ALS is required….
• In all rooms where an amplified system is integral to the function of the
room, such as an amplified classroom soundfield
Effective September 2010 ALS is required….
• In all rooms where an amplified system is integral to the function of the
room, such as an amplified classroom soundfield
• This will be part of the National Electrical Code this year
Questions
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