DK176911B1 - Digitalt høreapparat med justerbar taktsfrekvens - Google Patents
Digitalt høreapparat med justerbar taktsfrekvens Download PDFInfo
- Publication number
- DK176911B1 DK176911B1 DKPA200001266A DKPA200001266A DK176911B1 DK 176911 B1 DK176911 B1 DK 176911B1 DK PA200001266 A DKPA200001266 A DK PA200001266A DK PA200001266 A DKPA200001266 A DK PA200001266A DK 176911 B1 DK176911 B1 DK 176911B1
- Authority
- DK
- Denmark
- Prior art keywords
- digital
- hearing aid
- frequency
- input signal
- signal
- Prior art date
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/03—Aspects of the reduction of energy consumption in hearing devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Otolaryngology (AREA)
- Neurosurgery (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Analogue/Digital Conversion (AREA)
- Amplifiers (AREA)
- Power Sources (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Description
-1- DK 176911 B1
Opfindelsen angår et høreapparat med mindst én spændingskilde, en indgangstransducer til optagelse af et akustisk indgangssignal, en udgangstransducer og en signalbehandlingsenhed.
Et digitalt høreapparat har i almindelighed mindst én spændingskilde, eksempelvis et 5 batteri eller en akkumulator, en signalindgang til optagelse af et akustisk indgangssignal og en signalbehandlingsenhed. Før den digitale behandling af et analogt indgangssignal aftastes dette først og A/D-omformes. Aftastningshyppigheden vælges her sædvanligvis efter den højeste frekvens (fe. 10 kHz) for det indgangssignal, som skal fortolkes. Taktfrekvensen for de digitale komponenter, som fx. A/D-omformere, D/A-omformere, io signalbehandlingsprocessorer osv., fastlægges ligeså ved fremstillingen af høreapparatet.
Disse forbliver fra nu af uændrede ved høreapparatets drift.
Strømbesparende tricks ved Embedded Controllers er kendte fra RALLY Michael S., Stromspar-Tricks bei Embeeded Controllem, DESIGN & ELEKTRONIK DSPs und MICROCONTROLLER; oktober 98. Der gives brugeren af denne controller mulighed for is at nedsætte processorkernens taktfrekvens, når der ikke foreligger nogle behandlingsopgaver, eller udnyttelsen er lille.
Fra BIERL Lutz, Sparsamer geht’s kaum, Elektronik 26/1995, siderne 67-71, kendes der et målesystem med en mikrocomputer, ved hvilket alle komponenter ikke konstant er i drift, men kun delvist indkobles efter behov. Systemet vækkes med bestemte 20 tidsintervaller for at gennemføre målinger og beregninger og befinder sig ellers i en mode med reduceret strømforbrug.
En digital chip, som taktstyres med formindsket taktfrekvens i en standby-tilstand, er kendt fra COLANDREA Francesco und Andere, KFZ-Chip mit allem drauf, Elektronik 23/1997, siderne 60-62, 64, 66-68, 81, 82.
25 Det er den foreliggende opfindelses opgave at sænke et digitalt høreapparats ener gibehov.
Denne opgave løses ved et digitalt høreapparat med mindst én spændingskilde, en indgangstransducer til optagelse af et akustisk indgangssignal, en udgangstransducer, en signalbehandlingsenhed og en signalanalyse- og fortolkningsenhed til analyse og so fortolkning af indgangssignalet ved, at aftastningshyppigheden for indgangssignalet og/eller mindst én digital komponents taktfrekvens kan styres automatisk med signalanalyse- og fortolkningsenheden.
Ved de kendte digitale høreapparater, som drives med henholdsvis fastlagt systemtakt og fastlagt aftastningshyppighed, er energibehovet til aftastningen af det akustiske 35 indgangssignal og de digitale komponenters drift næsten konstant. Ofte har indgangssignalets totale båndbredde imidlertid ikke interesse, og den maksimalt mulige processorka- -2- DK 176911 B1 pacitet udtømmes kun til dels. Energibehovet til høreapparatets drift forbliver imidlertid uberørt deraf.
Nedsættelsen ifølge opfindelsen af aftastningshyppigheden for indgangssignalet og/eller taktfrekvensen for en digital komponent, fx. en mikroprocessor eller en digital 5 signalprocessor, medfører en næsten proportional formindskelse af de tilsvarende komponenters effektforbrug. Høreapparatets driftstid kan med et indsat batteri eller en indsat akkumulator forøges i tilsvarende grad. Spændingskildens lagerkapacitet er meget begrænset især ved høreapparater på grund af den tilstræbe miniaturisering. En nedsættelse af energibehovet virker således særligt fordelagtigt ved disse apparater. io Ifølge en udførelsesform for opfindelsen kan aftastningshyppigheden for det akustiske indgangssignal og/eller mindst én digital komponents taktfrekvens styres automatisk med en signalanalyse- og fortolkningsenhed. Hvis det eksempelvis opdages, at indgangssignalet kun har en begrænset båndbredde, tilpasses aftastningshyppigheden automatisk på tilsvarende måde.
is Et høreapparat med flere mikrofoner til parallel optagelse af flere mikrofonsignaler, ved hvilket ikke alle mikrofonsignaler imidlertid skal fortolkes i en bestemt driftsmode, giver en yderligere mulighed. Her kan en signalaftastning delvist udelades helt, og en signalprocessors kapacitet til behandlingen af indgangssignalerne kan også reduceres tilsvarende, hvilket ifølge opfindelsen sker ved at nedsætte taktfrekvensen.
20 En udførelsesform af opfindelsen foreslår, at aftastningshyppigheden for indgangs signalet og/eller mindst én digital komponents taktfrekvens afhænger af spændingskildens tilstand. Kan der anes et fald i spændingsforsyningen, kan høreapparatet overføres automatisk til en slags “energisparemode”. En begrænset drift kan dermed opretholdes i en begrænset tid ganske vist med begrænset funktionalitet, men til gengæld med reduceret 25 energibehov.
Moderne høreapparater giver høreapparat-brugeren valgmuligheden mellem forskellige høreprogrammer. Disse er igen tilpasset specielt til bestemte høresituationer. Forskellige høresituationer nødvendiggør imidlertid også et forskelligt regneopbud ved signalbehandlingen. Der tages ifølge opfindelsen hensyn til denne omstændighed med en 30 aftastningshyppighed og taktfrekvens, som er tilpasset i overensstemmelse med det valgte høreprograms fordringer. Den tilsvarende tilpasning sker dermed automatisk ved valg af høreprogrammet.
Opfindelsen skaber en yderligere mulighed ved, at den øjeblikkelige lydsituation, som høreapparatet befinder sig i, genkendes ved hjælp af en signalanalyse- og fortolk-35 ningsenhed, og aftastningshyppigheden eller taktfrekvensen indstilles automatisk på grundlag deraf. Et eksempel på en sådan lydsituation er en omgivelse med talesignaler, som er overlejret af støj signaler. Giver høreapparatet eksempelvis mulighed for at be- -3- DK 176911 B1 handle og overføre indgangssignaler indtil maksimalt 10 kHz, er overføringen og behandlingen indtil maksimalt 5 kHz som regel tilstrækkelig ved talesignaler. Aftastnings-hyppigheden for indgangssignalet og henholdsvis den digitale signalprocessors og systemtaktens taktfrekvens kan således halveres. Støj signaler med en frekvens over 5 kHz 5 overføres således ikke mere. Demdover kan eksisterende filtre til baggrundsstøjundertrykkelse arbejde tilsvarende mere selektivt i det begrænsede frekvensområde indtil 5 kHz.
Hvis der nu igen indstilles et andet høreprogram, ved hvilket der er ønsket en større båndbredde, fx. til musik, kan systemtakten igen sættes op. Det er endog tænkeligt, at man forøger systemtakten for toneoptimerede høreprogrammer i forhold til normalværdien. io Yderligere fordele og detaljer ved opfindelsen fremgår af den efterfølgende beskri velse af et udførelseseksempel ved hjælp af tegningen og i forbindelse med patentkravene.
På figuren er der skematisk vist et digitalt høreapparat 1 med en akustisk/elektrisk indgangstransducer 3, en A/D-omformer 10 til aftastningen og A/D-omformning af et indgangssignal, en signalbehandlingsenhed 4 med en digital signalprocessor 5, en D/A-i5 omformer 11 og en elektrisk/akustisk udgangstransducer 9. Høreapparatet 1 har yderligere en taktgiver 12 med variabel udgangstakt, en signalanalyse- og fortolkningsenhed 7 samt et betjeningselement 6 i form af en trykkontakt. Et batteri 2 tjener til spændingsforsyningen af høreapparatet 1.
På anden måde end ved det viste udførelseseksempel med en taktgiver 12, som 20 fastlægger taktfrekvensen for høreapparatets 1 digitale komponenter (systemtakt), kan en egen taktgiver også være tildelt de enkelte komponenter og ifølge opfindelsen være variabel med hensyn til taktfrekvensen.
Der kan vælges forskellige høreprogrammer ved hjælp af trykkontakten 6. Disse er optimeret til forskellige høresituationer. Taktfrekvensen for høreapparat-komponenter, 25 som fx. A/D-omformer 10, signalprocessor 5 eller D/A-omformer 11, samt aftastnings-hyppigheden for indgangssignalet fastlægges i afhængighed af det valgte høreprogram. Udførelseseksemplet giver en yderligere mulighed for at fastlægge taktfrekvensen og aftastningshyppigheden ved hjælp af signalanalyse- og fortolkningsenheden 7. Denne analyserer det analoge samt det A/D-omformede indgangssignal og genkender henholdsvis 30 indgangssignalets frekvensspektrum og den høresituation, som høreapparatet 1 befinder sig i. Denne fortolkning påvirker også taktgiveren 12. Derudover overvåges spændingskildens 2 tilstand af midlerne 8 til kontrol af denne. Nærmer den deri lagrede energi sig sin slutning, reduceres taktfrekvensen af disse midler 8, og signalbehandlingen overføres til en begrænset driftsmode. Dermed er en begrænset drift af høreapparatet 1 35 endnu mulig i begrænset tid med det indsatte batteri 2.
Claims (5)
1. Digitalt høreapparat (1) med mindst én spændingskilde (2), en indgangstransducer (3) til optagelse af et akustisk indgangssignal, en udgangstransducer (9), en signalbe- 5 handlingsenhed (4) og en signalanalyse- og fortolkningsenhed (7) til analyse og fortolkning af indgangssignalet, kendetegnet ved, at aftastningshyppigheden for indgangssignalet og/eller mindst én digital komponents (5) taktfrekvens kan styres automatisk med signalanalyse- og fortolkningsenheden (7).
2. Digitalt høreapparat (1) ifølge krav 1 med midler (8) til kontrol af spændingskilden io (2), kendetegnet ved, at aftastningshyppigheden for indgangssignalet og/eller den digitale komponents (5) taktfrekvens kan indstilles afhængigt af spændingskildens (2) tilstand.
3. Digitalt høreapparat ifølge et af kravene 1 - 2 med flere indstillelige høreprogram-mer, kendetegnet ved, at aftastningshyppigheden for indgangssignalet og/eller den digitale komponents (5) taktfrekvens indstilles ved valg afhøreprogrammet. i5
4. Digitalt høreapparat ifølge et af kravene 1-3 med en signalanalyse- og fortolk-ningsenhed (7) til genkendelse af den lydsituation, som høreapparatet (1) befinder sig i, kendetegnet ved, at aftastningshyppigheden for indgangssignalet og/eller den digitale komponents (5) taktfrekvens indstilles automatisk ved hjælp af signalanalyse- og fortolkningsenheden (7) i afhængighed af den lydsituation, som høreapparatet (1) befinder sig 20 i.
5. Digitalt høreapparat ifølge krav 4, kendetegnet ved, at aftastningshyppigheden for indgangssignalet og/eller den digitale komponents (5) taktfrekvens kan nedsættes i en lydsituation med ønskede signaler i form af talesignaler, som er overlejrede med støj signaler.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19941859 | 1999-09-02 | ||
DE19941859A DE19941859C2 (de) | 1999-09-02 | 1999-09-02 | Digitales Hörhilfegerät |
Publications (2)
Publication Number | Publication Date |
---|---|
DK200001266A DK200001266A (da) | 2001-03-03 |
DK176911B1 true DK176911B1 (da) | 2010-04-19 |
Family
ID=7920573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DKPA200001266A DK176911B1 (da) | 1999-09-02 | 2000-08-28 | Digitalt høreapparat med justerbar taktsfrekvens |
Country Status (4)
Country | Link |
---|---|
US (1) | US6516073B1 (da) |
CH (1) | CH694653A5 (da) |
DE (1) | DE19941859C2 (da) |
DK (1) | DK176911B1 (da) |
Families Citing this family (407)
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DE19602453C1 (de) * | 1996-01-24 | 1997-07-03 | Siemens Audiologische Technik | Elektrisches Hörhilfegerät |
DE19802568C2 (de) * | 1998-01-23 | 2003-05-28 | Cochlear Ltd | Hörhilfe mit Kompensation von akustischer und/oder mechanischer Rückkopplung |
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- 2000-08-28 DK DKPA200001266A patent/DK176911B1/da not_active IP Right Cessation
- 2000-09-05 US US09/655,961 patent/US6516073B1/en not_active Expired - Fee Related
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CH694653A5 (de) | 2005-05-13 |
DE19941859C2 (de) | 2002-06-13 |
DE19941859A1 (de) | 2001-03-15 |
DK200001266A (da) | 2001-03-03 |
US6516073B1 (en) | 2003-02-04 |
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