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1. 发明专利

SE467764B Method for sound presentation for compensating for a deterioration in frequency selectivity in people with hearing difficulties 未知
公开(公告)号：SE467764B
公开(公告)日：1992-09-07
申请号：SE9101758
申请日：1991-06-10
申请人： HELLGREN JOHAN , STIG ARLINGER , LUNNER THOMAS
发明人： HELLGREN JOHAN , ARLINGER STIG , LUNNER THOMAS
IPC分类号： H04R25/00
摘要： The invention concerns a method for sound presentation for compensating for a deterioration in frequency selectivity in people with hearing difficulties. Frequency selectivity, that is the ability to distinguish sound at different frequencies, is impaired in people with hearing difficulties so that the ability to understand speech in noisy environments is impaired in comparison to people with normal hearing. The invention solves this problem by the sound signal being divided into a number of frequency bands, where certain frequency bands are presented to one ear and certain frequency bands to the other ear. The invention is utilized principally in hearing aid applications.

2. 发明专利

SE9101758L 未知
公开(公告)号：SE9101758L
公开(公告)日：1992-09-07
申请号：SE9101758
申请日：1991-06-10
申请人： HELLGREN JOHAN , STIG ARLINGER , LUNNER THOMAS
发明人： HELLGREN JOHAN , ARLINGER STIG , LUNNER THOMAS
IPC分类号： H04R25/00

3. 发明专利

SE9101758D0 未知
公开(公告)号：SE9101758D0
公开(公告)日：1991-06-10
申请号：SE9101758
申请日：1991-06-10
申请人： HELLGREN JOHAN , STIG ARLINGER , LUNNER THOMAS
发明人： HELLGREN JOHAN , ARLINGER STIG , LUNNER THOMAS
IPC分类号： H04R25/00

4. 发明专利

CA2098711C METHOD TO REDUCE THE POWER CONSUMATION OF A DIGITAL FILTER BANK BY REDUCING THE NUMBER OF MULTIPLICATIONS 未知
公开(公告)号：CA2098711C
公开(公告)日：2000-11-14
申请号：CA2098711
申请日：1991-12-13
申请人： LUNNER THOMAS , HELLGREN JOHAN
发明人： LUNNER THOMAS , HELLGREN JOHAN
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： digital filter bank for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly proposed a filter bank far use in battery-operated applications. The digital filter bank includes a zero-filled digital basic filter ¢H1 (z)! having a complementary output, and downstream, parallel part-filter banks ¢H D1; H D2!. In the present context, a zero-filled filter pertains to a filter which maybe based on an LP-filter which is expanded with a number of zero-value filter coefficients between each coefficient in the original filter. The part-filter bank¢H D1! connected to the normal output of the basic filter ¢H1 (z)! is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the, filter-bank bands is found on each output signal from said one part-filter bank ¢H D1!. The other part-filter bank ¢H D2! connected to the complementary output of the basic filter ¢H1 (z)! is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from he second part-filter bank ¢HD2!.

5. 发明专利

DE69123365D1 未知
公开(公告)号：DE69123365D1
公开(公告)日：1997-01-09
申请号：DE69123365
申请日：1991-12-13
申请人： LUNNER THOMAS , HELLGREN JOHAN
发明人： LUNNER THOMAS , HELLGREN JOHAN
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： PCT No. PCT/SE91/00860 Sec. 371 Date Mar. 17, 1994 Sec. 102(e) Date Mar. 17, 1994 PCT Filed Dec. 13, 1991 PCT Pub. No. WO92/11696 PCT Pub. Date Jul. 9, 1992.A digital filter bank analyzer for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly provided a filter bank analyzer for use in battery-operated applications. The digital filter bank analyzer includes a zero-filled expanded digital basic filter [H1(z)] having a complementary output, and downstream, parallel part-filter banks [HD1,HD2]. In the present context, a zero-filled filter pertains to a filter which may be used on an LP-filter that which is expanded with a number of zero-filter coefficients between each coefficient in the original filter. The part-filter bank [HD1] connected to the normal output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the filter-bank bands is found on each output signal from said one part-filter bank [HD1]. The other part-filter bank [HD2] connected to the complementary output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from the second part-filter bank [HD2].

6. 发明专利

AT145772T 未知
公开(公告)号：AT145772T
公开(公告)日：1996-12-15
申请号：AT92901314
申请日：1991-12-13
申请人： LUNNER THOMAS , HELLGREN JOHAN
发明人： LUNNER THOMAS , HELLGREN JOHAN
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： PCT No. PCT/SE91/00860 Sec. 371 Date Mar. 17, 1994 Sec. 102(e) Date Mar. 17, 1994 PCT Filed Dec. 13, 1991 PCT Pub. No. WO92/11696 PCT Pub. Date Jul. 9, 1992.A digital filter bank analyzer for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly provided a filter bank analyzer for use in battery-operated applications. The digital filter bank analyzer includes a zero-filled expanded digital basic filter [H1(z)] having a complementary output, and downstream, parallel part-filter banks [HD1,HD2]. In the present context, a zero-filled filter pertains to a filter which may be used on an LP-filter that which is expanded with a number of zero-filter coefficients between each coefficient in the original filter. The part-filter bank [HD1] connected to the normal output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the filter-bank bands is found on each output signal from said one part-filter bank [HD1]. The other part-filter bank [HD2] connected to the complementary output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from the second part-filter bank [HD2].

7. 发明专利

DE69123365T2 未知
公开(公告)号：DE69123365T2
公开(公告)日：1997-03-27
申请号：DE69123365
申请日：1991-12-13
申请人： LUNNER THOMAS , HELLGREN JOHAN
发明人： LUNNER THOMAS , HELLGREN JOHAN
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： PCT No. PCT/SE91/00860 Sec. 371 Date Mar. 17, 1994 Sec. 102(e) Date Mar. 17, 1994 PCT Filed Dec. 13, 1991 PCT Pub. No. WO92/11696 PCT Pub. Date Jul. 9, 1992.A digital filter bank analyzer for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly provided a filter bank analyzer for use in battery-operated applications. The digital filter bank analyzer includes a zero-filled expanded digital basic filter [H1(z)] having a complementary output, and downstream, parallel part-filter banks [HD1,HD2]. In the present context, a zero-filled filter pertains to a filter which may be used on an LP-filter that which is expanded with a number of zero-filter coefficients between each coefficient in the original filter. The part-filter bank [HD1] connected to the normal output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the filter-bank bands is found on each output signal from said one part-filter bank [HD1]. The other part-filter bank [HD2] connected to the complementary output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from the second part-filter bank [HD2].

8. 发明专利

ES2094899T3 未知
公开(公告)号：ES2094899T3
公开(公告)日：1997-02-01
申请号：ES92901314
申请日：1991-12-13
申请人： LUNNER THOMAS , HELLGREN JOHAN
发明人： LUNNER THOMAS , HELLGREN JOHAN
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： PCT No. PCT/SE91/00860 Sec. 371 Date Mar. 17, 1994 Sec. 102(e) Date Mar. 17, 1994 PCT Filed Dec. 13, 1991 PCT Pub. No. WO92/11696 PCT Pub. Date Jul. 9, 1992.A digital filter bank analyzer for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly provided a filter bank analyzer for use in battery-operated applications. The digital filter bank analyzer includes a zero-filled expanded digital basic filter [H1(z)] having a complementary output, and downstream, parallel part-filter banks [HD1,HD2]. In the present context, a zero-filled filter pertains to a filter which may be used on an LP-filter that which is expanded with a number of zero-filter coefficients between each coefficient in the original filter. The part-filter bank [HD1] connected to the normal output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the filter-bank bands is found on each output signal from said one part-filter bank [HD1]. The other part-filter bank [HD2] connected to the complementary output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from the second part-filter bank [HD2].

9. 发明专利

SE467680B 未知
公开(公告)号：SE467680B
公开(公告)日：1992-08-24
申请号：SE9004055
申请日：1990-12-19
申请人： HELLGREN JOHAN , LUNNER THOMAS
发明人： HELLGREN JOHAN , LUNNER THOMAS
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： PCT No. PCT/SE91/00860 Sec. 371 Date Mar. 17, 1994 Sec. 102(e) Date Mar. 17, 1994 PCT Filed Dec. 13, 1991 PCT Pub. No. WO92/11696 PCT Pub. Date Jul. 9, 1992.A digital filter bank analyzer for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly provided a filter bank analyzer for use in battery-operated applications. The digital filter bank analyzer includes a zero-filled expanded digital basic filter [H1(z)] having a complementary output, and downstream, parallel part-filter banks [HD1,HD2]. In the present context, a zero-filled filter pertains to a filter which may be used on an LP-filter that which is expanded with a number of zero-filter coefficients between each coefficient in the original filter. The part-filter bank [HD1] connected to the normal output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the filter-bank bands is found on each output signal from said one part-filter bank [HD1]. The other part-filter bank [HD2] connected to the complementary output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from the second part-filter bank [HD2].

10. 发明专利

SE9004055L 未知
公开(公告)号：SE9004055L
公开(公告)日：1992-06-20
申请号：SE9004055
申请日：1990-12-19
申请人： HELLGREN JOHAN , LUNNER THOMAS
发明人： HELLGREN JOHAN , LUNNER THOMAS
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
摘要： PCT No. PCT/SE91/00860 Sec. 371 Date Mar. 17, 1994 Sec. 102(e) Date Mar. 17, 1994 PCT Filed Dec. 13, 1991 PCT Pub. No. WO92/11696 PCT Pub. Date Jul. 9, 1992.A digital filter bank analyzer for reducing power consumption by decreasing the number of multiplications carried out therein. There is particularly provided a filter bank analyzer for use in battery-operated applications. The digital filter bank analyzer includes a zero-filled expanded digital basic filter [H1(z)] having a complementary output, and downstream, parallel part-filter banks [HD1,HD2]. In the present context, a zero-filled filter pertains to a filter which may be used on an LP-filter that which is expanded with a number of zero-filter coefficients between each coefficient in the original filter. The part-filter bank [HD1] connected to the normal output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the basic filter, so that only one of the filter-bank bands is found on each output signal from said one part-filter bank [HD1]. The other part-filter bank [HD2] connected to the complementary output of the basic filter [H1(z)] is intended to filter-out those filter-bank bands which are pass bands to the complementary output of the basic filter, so that only one filter-bank band is found on each output signal from the second part-filter bank [HD2].

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