Method and apparatus for analyzing and visualizing the performance of frequency lowering hearing aids
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04R-025/00
H04R-029/00
A61B-005/0484
A61B-005/12
A61B-005/00
출원번호
US-0456252
(2014-08-11)
등록번호
US-9807519
(2017-10-31)
발명자
/ 주소
Brungart, Douglas S.
출원인 / 주소
The United States of America as Represented by the Secretary of Defense
대리인 / 주소
Tso, Diane P.
인용정보
피인용 횟수 :
0인용 특허 :
9
초록▼
A method of analyzing performance of frequency lowering hearing aids. The method includes generating a sequentially of noise signals and transmitting acoustical sounds from a sound output device in response to the sequence of noise signals. A sound input device records the acoustical sounds and save
A method of analyzing performance of frequency lowering hearing aids. The method includes generating a sequentially of noise signals and transmitting acoustical sounds from a sound output device in response to the sequence of noise signals. A sound input device records the acoustical sounds and saves as a first device data. The sound input device with a frequency lowering hearing aid records the acoustical sounds and save as a second device data. The second device data is compared to the first device data and, in response to the comparison, at least one function of the frequency lowering hearing aid is optionally adjusted.
대표청구항▼
1. A method of analyzing performance of a frequency lowering hearing aid, the method comprising: generating a sequence of successive noise signals, wherein the sequence of successive noise signals comprises a plurality of one-third octave band noise signals, and wherein the sequence of successive no
1. A method of analyzing performance of a frequency lowering hearing aid, the method comprising: generating a sequence of successive noise signals, wherein the sequence of successive noise signals comprises a plurality of one-third octave band noise signals, and wherein the sequence of successive noise signals covers a range of frequencies;transmitting acoustical sounds from a sound output device in response to the sequence of noise signals;recording the acoustical sounds with a sound input device and saving as a first device data;recording the acoustical sounds with the sound input device and a frequency lowering hearing aid and saving as a second device data; andcomparing the second device data to the first device data using an arrow-based visualization method comprising generating a single graphical display of changes in center frequencies and output levels of the transmitted noise signal of the first device data and the second device data comprising plotting values of the center frequencies and the output levels of the transmitted noise signal of the first device data, and extending an arrow from the plotted values of the center frequencies and the output levels of the transmitted noise signal of the first device data to values of the center frequencies and the output levels of the transmitted noise signal of the corresponding second device data. 2. The method of claim 1, further comprising modulating the plurality of one-third octave band noise signals with an envelope having random variations within a speech perception frequencies. 3. The method of claim 2 wherein said random variations within speech perception frequencies range from about 4 Hz to about 16 Hz. 4. The method of claim 1, further comprising: calibrating at least one of the sound output device, the sound input device, and the frequency lowering hearing aid. 5. The method of claim 1, wherein the center frequency for each of the first and second device data is identified by: windowing each of the first and second device data;transforming each of the windowed first and second device data to respective first and second frequency data;smoothing the first and second frequency data; andfinding a maximum within the smoothed first and second frequency data. 6. The method of claim 5, wherein the windowing includes applying a Hanning window. 7. The method of claim 5, wherein the smoothing of the frequency domain includes convolving a rectangular window. 8. The method of claim 1, further comprising: verifying a validity of each of said identified center frequency of the first and second device data. 9. The method of claim 8, wherein said verifying of the validity of each of said identified center frequencies comprises estimating the envelope of the recorded acoustical sounds of the first device data by squaring the waveform of said recorded acoustical sounds of the first device data and applying a low-pass filter having a frequency of 32 Hz;estimating the envelope of the recorded acoustical sounds of the second device data by squaring the waveform of said recorded acoustical sounds of the second device data and applying a low-pass filter having a frequency of 32 Hz; anddetermining coherence between the envelope of the recorded acoustical sounds of the first device data and the envelope of the recorded acoustical sounds of the second device data. 10. The method of claim 9, the method further comprising removing the recorded acoustical sounds of the first and second device data when the coherence between the envelope of the recorded acoustical sounds of the first device data and the envelope of the recorded acoustical sounds of the second device data is less than about 0.5. 11. The method of claim 1, wherein a change in a color, a thickness, or both, of the arrows may be used to graphically visualize changes in the first device data, the second device data, or both. 12. The method of claim 1 wherein successive noise signal bands within each frequency octave of the sequence of successive noise signals are parametrically varied in amplitude. 13. The method of claim 12 wherein the parametric variation in amplitude is achieved by offsetting the sequence of successive noise signals with increasing sound pressure levels (SPLs). 14. The method of claim 13 wherein said increasing SPLs comprises a first SPL, a second SPL, a third SPL and a fourth SPL, wherein said first SPL is 50 dB, the second SPL is 60 dB, the third SPL is 70 dB and the fourth SPL is 80 dB. 15. The method of claim 1 wherein each said successive noise signal of the sequence is one twelfth octave higher in frequency than the immediately prior noise signal of the sequence. 16. The method of claim 1 wherein each successive noise signal of the sequence is one twelfth octave higher in frequency than the immediately prior noise signal of the sequence, and the output level is set to 50 dB for a first 1/12th octave of each ⅓rd octave band, 60 dB for a second 1/12th octave of each ⅓rd octave band, 70 dB for a third 1/12th octave of each ⅓rd octave band, and 80 dB for a fourth 1/12th octave of each ⅓rd octave band. 17. The method of claim 1 wherein the range of frequencies is from about 500 Hz to about 9514 Hz.
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이 특허에 인용된 특허 (9)
Hurtig, Richard Ray; Turner, Christopher William, Apparatus and methods for proportional audio compression and frequency shifting.
Neher, Tobias; Behrens, Thomas, Frequency transposition applications for improving spatial hearing abilities of subjects with high-frequency hearing losses.
Allegro,Silvia; Timms,Olegs; Hersbach,Adam; McDermott,Hugh; Dijkstra,Evert, Method for frequency transposition and use of the method in a hearing device and a communication device.
Soli Sigfrid D. (Sierra Madre CA) Jayaraman Sriram (Los Angeles CA) Gao Shawn (Cerritos CA) Sullivan Jean (Murrieta CA), Method of signal processing for maintaining directional hearing with hearing aids.
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