Takaki et al., 2024 - Google Patents
Digital direct-drive speaker system using MEMS speakersTakaki et al., 2024
- Document ID
- 3273813835333163859
- Author
- Takaki R
- Yasuda A
- Publication year
- Publication venue
- 2024 IEEE International Conference on Consumer Electronics (ICCE)
External Links
Snippet
In this paper, we propose a combination of regenerative circuits, a digital direct-drive system, and an intersymbol interference shaper to compensate for the shortcomings of MEMS speakers. Simulations and measurements were performed to verify the drive waveform …
- 230000001172 regenerating effect 0 abstract description 16
Classifications
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
- H03M3/502—Details of the final digital/analogue conversion following the digital delta-sigma modulation
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116488594B (en) | Audio amplifier system | |
| CN101807887B (en) | Class d amplifier | |
| CN103369447B (en) | Control method, flexible piezoelectric sound-generating devices and the portable apparatus that sound produces | |
| KR100916007B1 (en) | A high efficiency driver for miniature loudspeakers | |
| US7772924B2 (en) | Apparatus and method for controlling a common-mode voltage of switching amplifiers | |
| CN104969475B (en) | Digital-to-analog is converted | |
| CN100536345C (en) | Digital-to-analogue converter circuits | |
| CN102883242A (en) | Control device for driving multi-function speaker and related control method thereof | |
| US20120063632A1 (en) | Drive control circuit for vibration speaker | |
| US7091893B2 (en) | Loudspeaker control circuit | |
| TWI511443B (en) | Three-level half-bridge pulse-width modulation amplifier and method of driving the same | |
| JP2009524951A (en) | System and method for improving the performance of a digital amplifier by adding an ultrasonic signal to an input audio signal | |
| WO2004105251A1 (en) | A sigma-delta modulator with reduced switching rate for use in class-d amplification | |
| JP5214820B2 (en) | Hearing aid input converter and signal conversion method | |
| US11750157B2 (en) | Common-mode leakage error calibration for current sensing in a Class-D stage using a pilot tone | |
| CN104170405A (en) | Low nose and low power arrangement for playing audio signals | |
| CN110582935B (en) | Switching in an audio system having multiple playback paths | |
| CN108649959B (en) | Digital-analog converter and digital power amplifier subsystem | |
| Takaki et al. | Digital direct-drive speaker system using MEMS speakers | |
| CN101510444B (en) | Sample holding unit and voltage processing method, electronic equipment | |
| CN110636407A (en) | Full-digital loudspeaker system and working method thereof | |
| TWI752648B (en) | Amplifier and method for controlling the amplifier | |
| CN102484457B (en) | Amplifier circuit | |
| CN102823128B (en) | Digital amplifier | |
| Colli-menchi et al. | Design techniques for integrated CMOS class-D audio amplifiers |