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Related Concept Videos

Design Example: Vintage Mixing Console01:17

Design Example: Vintage Mixing Console

662
A sound engineer at a music company recently encountered a problem. The output from their newly acquired studio's vintage mixing console was too low for the requirements of modern recording equipment. To rectify this situation, the engineer decided to design an audio pre-amplifier using an operational amplifier (op-amp) to boost the signal level.
The specifications for the pre-amplifier were clear. It needed to amplify the audio signal by a factor of 10, have an input impedance above 10...
662

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Plasmon-assisted audio recording.

Hao Chen1, Abdul M Bhuiya2, Qing Ding2

  • 1Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA.

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|March 17, 2015
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Summary
This summary is machine-generated.

Researchers recorded and retrieved audio using plasmonic nanostructures, similar to early optical sound recording. This demonstrates plasmonic nanoantennas

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Area of Science:

  • Nanotechnology
  • Optics
  • Acoustics

Background:

  • Early sound recording utilized optical methods on film.
  • Plasmonic nanoantennas offer unique optical properties.

Purpose of the Study:

  • To demonstrate audio recording and retrieval using plasmonic nanostructures.
  • To explore plasmonic nanoantennas for information processing.

Main Methods:

  • Utilizing gold, pillar-supported bowtie nanoantennas.
  • Encoding audio via amplitude-modulated optical signals.
  • Retrieving audio using standard imaging optics.

Main Results:

  • Successful recording and retrieval of audio waveforms and spectra.
  • Construction of a 'plasmonic musical keyboard' to play music.
  • Demonstration of signal processing capabilities, including notch filtering.

Conclusions:

  • Plasmonic nanoantennas can store and process audio information.
  • This research opens new applications for plasmonic devices in information technology.