Difference between revisions of "Design of a Digital Audio Module for Ultra-Low Power Cellular Applications"
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Cellular audio applications depend on an audio interface to connect a microphone/speaker. Acoustic waves, usually voice, are captured by a microphone, amplified and subsequently sampled into the digital domain by an Analog to Digital Converter (ADC). In the other direction a stream of digital audio samples is first mapped into the analog domain by and Digital to Analog Converter (DAC) and subsequently amplified to drive a speaker, where the analog signal is translated into acoustic waves. | Cellular audio applications depend on an audio interface to connect a microphone/speaker. Acoustic waves, usually voice, are captured by a microphone, amplified and subsequently sampled into the digital domain by an Analog to Digital Converter (ADC). In the other direction a stream of digital audio samples is first mapped into the analog domain by and Digital to Analog Converter (DAC) and subsequently amplified to drive a speaker, where the analog signal is translated into acoustic waves. | ||
| − | A huge variety of integrated audio modules such as [1] exist on the marked. In cellular application an audio chip can be placed between microphone/speaker and a cellular modem. However, emerging applications, such as emergency watches [2], require highly integrated | + | A huge variety of integrated audio modules such as [1] exist on the marked. In cellular application an audio chip can be placed between microphone/speaker and a cellular modem. However, emerging applications, such as emergency watches [2] or ambulance drones [3], require highly integrated components due to their low footprint and extremely low power consumption. |
| − | Highly integrated cellular modems and ADC/DAC modules are under active research at the institute. In this project, the missing link to a microphone/speaker connection shall be designed. To this end, a switching amplifier supporting all common cellular audio standards (see [ | + | Highly integrated cellular modems and ADC/DAC modules are under active research at the institute. In this project, the missing link to a microphone/speaker connection shall be designed. To this end, a switching amplifier supporting all common cellular audio standards (see [4,5]) shall be designed and integrated on a chip. This is a perfect learning opportunity for analog integrated circuits design. |
===Status: Available === | ===Status: Available === | ||
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[2] [https://www.limmex.com/intl/en/function/overview Limmex Emergency Watch] | [2] [https://www.limmex.com/intl/en/function/overview Limmex Emergency Watch] | ||
| − | [3] [http:// | + | [3] [http://alecmomont.com/projects/dronesforgood/ Drones For Good] |
| − | [4] [http://www.3gpp.org/DynaReport/26-series.htm 3GPP Codecs Specifications; 3G and beyond/GSM] | + | [4] [http://www.3gpp.org/DynaReport/46-series.htm 3GPP Codecs Specifications; GSM only] |
| + | |||
| + | [5] [http://www.3gpp.org/DynaReport/26-series.htm 3GPP Codecs Specifications; 3G and beyond/GSM] | ||
[[Category:Hot]] | [[Category:Hot]] | ||
Revision as of 15:14, 11 February 2015
Contents
Short Description
Cellular audio applications depend on an audio interface to connect a microphone/speaker. Acoustic waves, usually voice, are captured by a microphone, amplified and subsequently sampled into the digital domain by an Analog to Digital Converter (ADC). In the other direction a stream of digital audio samples is first mapped into the analog domain by and Digital to Analog Converter (DAC) and subsequently amplified to drive a speaker, where the analog signal is translated into acoustic waves.
A huge variety of integrated audio modules such as [1] exist on the marked. In cellular application an audio chip can be placed between microphone/speaker and a cellular modem. However, emerging applications, such as emergency watches [2] or ambulance drones [3], require highly integrated components due to their low footprint and extremely low power consumption.
Highly integrated cellular modems and ADC/DAC modules are under active research at the institute. In this project, the missing link to a microphone/speaker connection shall be designed. To this end, a switching amplifier supporting all common cellular audio standards (see [4,5]) shall be designed and integrated on a chip. This is a perfect learning opportunity for analog integrated circuits design.
Status: Available
- Looking for 1-2 Semester/Master students
- Contact: Benjamin Weber
Prerequisites
- Interest in audio applications and analog integrated circuits design
- Recommended course: Analog Integrated Circuits (AIC)
Character
- 20% Theory
- 80% Implementation
Professor
References
[3] Drones For Good
