WO2007028836A1 - Método para el reconocimiento de señales con un mi crocontrolador de bajo coste - Google Patents
Método para el reconocimiento de señales con un mi crocontrolador de bajo coste Download PDFInfo
- Publication number
- WO2007028836A1 WO2007028836A1 PCT/ES2005/000484 ES2005000484W WO2007028836A1 WO 2007028836 A1 WO2007028836 A1 WO 2007028836A1 ES 2005000484 W ES2005000484 W ES 2005000484W WO 2007028836 A1 WO2007028836 A1 WO 2007028836A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- low
- recognition
- cost microcontroller
- signals
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004458 analytical method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 2
- 238000012731 temporal analysis Methods 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000003252 repetitive effect Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 206010011469 Crying Diseases 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/28—Constructional details of speech recognition systems
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L17/00—Speaker identification or verification techniques
- G10L17/26—Recognition of special voice characteristics, e.g. for use in lie detectors; Recognition of animal voices
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
Definitions
- the present invention relates to a method of recognizing a waveform by using a low-cost microcontroller.
- DSP Digital Signal Processor
- This type of electronic devices is characterized by offering great computing power, but it has the disadvantage of a relatively high cost.
- the computing power they possess is necessary to carry out the traditional method of signal analysis using the Fast Fourier Transform (FFT).
- FFT Fast Fourier Transform
- This method converts the signal from the temporal field to the frequency field, which facilitates the analysis and processing of the signals in the frequency field.
- DSP Digital Signal Processor
- This method requires that the signal to be analyzed be limited in time and repetitive. Examples of this type of signal are multiple, for example, the cry of a child, the barking of a dog, the noise of a machine, and in general all those repetitive sounds emitted by people, animals or things.
- the originality of the method resides in not using a signal analysis in the frequency field, but in the temporal field. This change, by itself, eliminates the need to use the Fast Fourier Transform and therefore the use of Digital Signal Processors.
- the method of the present patent rules out the use of patterns stored in a memory, with which the signal to be analyzed is compared. Instead, an identification procedure is performed using a fuzzy logic algorithm.
- the signal analysis method of this invention is based on the use of a low cost microcontroller that incorporates an analog / digital converter.
- the sampling phase begins.
- This converter takes a series of samples at regular intervals, of the value of the amplitude of the signal envelope.
- Direct signal samples are not taken, but the waveform of its envelope is previously obtained.
- This difference is the key to being able to use a device without great demands in terms of calculation power, since it transforms the signal to be analyzed into a similar one, but much simpler from the analysis point of view.
- the first consequence is the reduction in signal speed. This implies the possibility of using a low computing power microcontroller.
- the low frequency of the signal to be analyzed allows a much larger number of samples to be taken than the lower limit of the Nyquist frequency.
- This oversampling of the signal to be analyzed allows us to perform the analysis repeatedly with the two sample sequences.
- This repetition of the analysis allows us to compare the results obtained according to the sequence of samples analyzed and to apply different validation algorithms that guarantee the reliability of the final result.
- the way in which the waveform to be analyzed is characterized is based on the use of a matrix of temporal parameters of the waveform.
- the microprocessor performs a series of calculations to obtain the following parameters:
- a comparison is made between the elements obtained from the signal and the elements of the different reference matrices.
- the value of said index is calculated relative to the other reference matrices.
- the index does not have a prefixed value, allows us to accept waveforms with very different similarity values in appearance but that have a high degree of similarity between them in various elements of the matrix.
- the mean value could be very different from the reference value, but if the values of the rest of the elements have a high degree of correlation, the identification is positive.
- This method allows to automatically correct the decrease in the mean values of the signal as a consequence of the wear of the batteries in portable devices.
- the maximum number allowed by the internal RAM of the microcontroller (in this case 64) is taken, so the needs in terms of memory capacity are very small.
- the device in which the microcontroller has been incorporated is designed for portable use by the baby's caregiver.
- the distance from the baby's mouth to which the device should be placed is between 20 cm. And Im. T / ES2005 / 000484
- the distance limit values will depend on the regulation capacity of the block that the automatic level control performs.
- the sound is captured by means of a microphone (1) coupled to a pre-amplifier (2) that increases the level of the captured signal.
- a pre-amplifier (2) that increases the level of the captured signal.
- the necessary signal (12) is provided so that the automatic level control block (3) can supply the envelope detector (4) with the optimal signal.
- the signal envelope (13) is applied to an analog / digital converter (5) that obtains the samples of the instantaneous value of the signal (14).
- the signal identification process can be started again at any time.
Landscapes
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measurement Of Current Or Voltage (AREA)
- Feedback Control In General (AREA)
- Electrophonic Musical Instruments (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602005024724T DE602005024724D1 (de) | 2005-09-07 | 2005-09-07 | Mikrocontroller-implementiertes verfahren zur erkennung eines tonsignals |
CA002620200A CA2620200A1 (en) | 2005-09-07 | 2005-09-07 | Signal recognition method using a low-cost microcontroller |
MX2008002313A MX2008002313A (es) | 2005-09-07 | 2005-09-07 | Metodo para el reconocimiento de senales con un microcontrolador de bajo costo. |
ES05791972T ES2354702T3 (es) | 2005-09-07 | 2005-09-07 | Método para el reconocimiento de una señal de sonido implementado mediante microcontrolador. |
EP05791972A EP1950736B1 (en) | 2005-09-07 | 2005-09-07 | Microcontroller-implemented method for recognizing a sound signal |
AU2005336269A AU2005336269A1 (en) | 2005-09-07 | 2005-09-07 | Signal recognition method using a low-cost microcontroller |
JP2008529649A JP4931927B2 (ja) | 2005-09-07 | 2005-09-07 | マイクロコントローラーを利用した信号認識法 |
AT05791972T ATE488002T1 (de) | 2005-09-07 | 2005-09-07 | Mikrocontroller-implementiertes verfahren zur erkennung eines tonsignals |
US12/064,988 US20080284409A1 (en) | 2005-09-07 | 2005-09-07 | Signal Recognition Method With a Low-Cost Microcontroller |
BRPI0520529-8A BRPI0520529A2 (pt) | 2005-09-07 | 2005-09-07 | método de reconhecimento de sinal utilizando um microcontrolador de baixo custo |
PCT/ES2005/000484 WO2007028836A1 (es) | 2005-09-07 | 2005-09-07 | Método para el reconocimiento de señales con un mi crocontrolador de bajo coste |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2005/000484 WO2007028836A1 (es) | 2005-09-07 | 2005-09-07 | Método para el reconocimiento de señales con un mi crocontrolador de bajo coste |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007028836A1 true WO2007028836A1 (es) | 2007-03-15 |
Family
ID=37835396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2005/000484 WO2007028836A1 (es) | 2005-09-07 | 2005-09-07 | Método para el reconocimiento de señales con un mi crocontrolador de bajo coste |
Country Status (11)
Country | Link |
---|---|
US (1) | US20080284409A1 (es) |
EP (1) | EP1950736B1 (es) |
JP (1) | JP4931927B2 (es) |
AT (1) | ATE488002T1 (es) |
AU (1) | AU2005336269A1 (es) |
BR (1) | BRPI0520529A2 (es) |
CA (1) | CA2620200A1 (es) |
DE (1) | DE602005024724D1 (es) |
ES (1) | ES2354702T3 (es) |
MX (1) | MX2008002313A (es) |
WO (1) | WO2007028836A1 (es) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE540399T1 (de) * | 2009-11-10 | 2012-01-15 | Research In Motion Ltd | System und verfahren zur stimmenauthentifizierung |
US8321209B2 (en) | 2009-11-10 | 2012-11-27 | Research In Motion Limited | System and method for low overhead frequency domain voice authentication |
US8775191B1 (en) * | 2013-11-13 | 2014-07-08 | Google Inc. | Efficient utterance-specific endpointer triggering for always-on hotwording |
US10238341B2 (en) | 2016-05-24 | 2019-03-26 | Graco Children's Products Inc. | Systems and methods for autonomously soothing babies |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4827519A (en) * | 1985-09-19 | 1989-05-02 | Ricoh Company, Ltd. | Voice recognition system using voice power patterns |
US6321194B1 (en) * | 1999-04-27 | 2001-11-20 | Brooktrout Technology, Inc. | Voice detection in audio signals |
US20020074987A1 (en) * | 2000-09-01 | 2002-06-20 | Jorg Hauptmann | Tone signal detection circuit for detecting tone signals |
US20050177362A1 (en) * | 2003-03-06 | 2005-08-11 | Yasuhiro Toguri | Information detection device, method, and program |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4066844A (en) * | 1975-11-13 | 1978-01-03 | Communications Satellite Corporation | Adaptable zero order predictor for speech predictive encoding communications systems |
US4181813A (en) * | 1978-05-08 | 1980-01-01 | John Marley | System and method for speech recognition |
US4627091A (en) * | 1983-04-01 | 1986-12-02 | Rca Corporation | Low-energy-content voice detection apparatus |
GB2145864B (en) * | 1983-09-01 | 1987-09-03 | King Reginald Alfred | Voice recognition |
US5150415A (en) * | 1989-05-01 | 1992-09-22 | Motorola, Inc. | Volume control circuit using pulse modulation |
GB2262992B (en) * | 1990-06-21 | 1995-07-05 | Reynolds Software Inc | Method and apparatus for wave analysis and event recognition |
JPH06222792A (ja) * | 1993-01-21 | 1994-08-12 | Fuji Xerox Co Ltd | 音処理装置 |
US5640490A (en) * | 1994-11-14 | 1997-06-17 | Fonix Corporation | User independent, real-time speech recognition system and method |
US6044343A (en) * | 1997-06-27 | 2000-03-28 | Advanced Micro Devices, Inc. | Adaptive speech recognition with selective input data to a speech classifier |
US6347297B1 (en) * | 1998-10-05 | 2002-02-12 | Legerity, Inc. | Matrix quantization with vector quantization error compensation and neural network postprocessing for robust speech recognition |
DE19859174C1 (de) * | 1998-12-21 | 2000-05-04 | Max Planck Gesellschaft | Verfahren und Vorrichtung zur Verarbeitung rauschbehafteter Schallsignale |
US7653002B2 (en) * | 1998-12-24 | 2010-01-26 | Verizon Business Global Llc | Real time monitoring of perceived quality of packet voice transmission |
FI19992351A (fi) * | 1999-10-29 | 2001-04-30 | Nokia Mobile Phones Ltd | Puheentunnistus |
FR2805433A1 (fr) * | 2000-02-17 | 2001-08-24 | France Telecom | Procede et dispositif de comparaison de signaux pour le controle de transducteurs et systeme de controle de transducteurs |
JP2003280682A (ja) * | 2002-03-20 | 2003-10-02 | Toyota Motor Corp | 音声認識装置及び方法 |
US6947869B2 (en) * | 2002-03-29 | 2005-09-20 | The United States Of America As Represented By The Secretary Of The Navy | Efficient near neighbor search (ENN-search) method for high dimensional data sets with noise |
US7529670B1 (en) * | 2005-05-16 | 2009-05-05 | Avaya Inc. | Automatic speech recognition system for people with speech-affecting disabilities |
US7536304B2 (en) * | 2005-05-27 | 2009-05-19 | Porticus, Inc. | Method and system for bio-metric voice print authentication |
-
2005
- 2005-09-07 JP JP2008529649A patent/JP4931927B2/ja not_active Expired - Fee Related
- 2005-09-07 AU AU2005336269A patent/AU2005336269A1/en not_active Abandoned
- 2005-09-07 ES ES05791972T patent/ES2354702T3/es active Active
- 2005-09-07 US US12/064,988 patent/US20080284409A1/en not_active Abandoned
- 2005-09-07 BR BRPI0520529-8A patent/BRPI0520529A2/pt not_active IP Right Cessation
- 2005-09-07 EP EP05791972A patent/EP1950736B1/en active Active
- 2005-09-07 AT AT05791972T patent/ATE488002T1/de not_active IP Right Cessation
- 2005-09-07 DE DE602005024724T patent/DE602005024724D1/de active Active
- 2005-09-07 CA CA002620200A patent/CA2620200A1/en not_active Abandoned
- 2005-09-07 WO PCT/ES2005/000484 patent/WO2007028836A1/es active Application Filing
- 2005-09-07 MX MX2008002313A patent/MX2008002313A/es active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4827519A (en) * | 1985-09-19 | 1989-05-02 | Ricoh Company, Ltd. | Voice recognition system using voice power patterns |
US6321194B1 (en) * | 1999-04-27 | 2001-11-20 | Brooktrout Technology, Inc. | Voice detection in audio signals |
US20020074987A1 (en) * | 2000-09-01 | 2002-06-20 | Jorg Hauptmann | Tone signal detection circuit for detecting tone signals |
US20050177362A1 (en) * | 2003-03-06 | 2005-08-11 | Yasuhiro Toguri | Information detection device, method, and program |
Also Published As
Publication number | Publication date |
---|---|
MX2008002313A (es) | 2008-04-22 |
CA2620200A1 (en) | 2007-03-15 |
BRPI0520529A2 (pt) | 2009-09-29 |
ES2354702T3 (es) | 2011-03-17 |
JP4931927B2 (ja) | 2012-05-16 |
ATE488002T1 (de) | 2010-11-15 |
DE602005024724D1 (de) | 2010-12-23 |
EP1950736B1 (en) | 2010-11-10 |
AU2005336269A1 (en) | 2007-03-15 |
EP1950736A1 (en) | 2008-07-30 |
JP2009507260A (ja) | 2009-02-19 |
US20080284409A1 (en) | 2008-11-20 |
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