Adaptive Sound Upmix System

aka

Adaptive Radiated Sound Enhancement

 

 

 

Usher's Upmixer

 

 

 

 

Audio Demonstrations of the New Upmixer.

 

  • Click on underlined text below to download the file.

  • All the audio files are two-channel, 44.1 kHz, 16 bit .wav files, between 30 and 60 seconds long (5-12 MB).

  • The "original" file is before the upmix processing, and the "output" file contains the two channels with the "extracted reverb" intended to be played with rear-loudspeakers.

  • Please note: The "look-ahead" filtering method suggested in the thesis is not implemented.

  • Please feel free to email me any two-channel audio files you wish to hear upmixed.

 

 

 

 

1.

Original: "Her Majesty" (The Beatles).

This 30-second pop song is a good example of hard panning and dynamic amplitude panning to move the sound source from one speaker to the other.

 

Upmixed output of "Her Majesty": -5 dB cross-talk.

 

Upmixed output of "Her Majesty": No cross-talk.

With no cross-talk, this sounds un-natural and "jumpy" as the direct sound can not be cancelled for the hard-panned voice at the beginning.

 

"Her Majesty" LS and RS surround channel outputs from DPLII.

 

 

 

 

 

2.

Original: Solo voice.

Reproduced with a single loudspeaker in a 2000 m3 concert hall, recorded 3 metres off-axis with a spaced microphone pair.

 

Upmixed Output of solo voice recording.

 

Solo voice recording LS and RS surround channel outputs from DPLII.

 

 

 

 

 

3.

Original: "War and Peace".

Electro-pop song with multiple voices at different locations.

 

Upmixed Output of "War and Peace".

 

 

 

 

 

4.

Original: "What Is Hip?"

Funk-pop song with multiple instruments.

 

Upmixed Output of "What Is Hip?".

 

 

 

 

 

5.

Original: Trumpet Solo in Church.

 

Upmixed Output of Trumpet Solo.

 

 

 

 

 

 

 

 

 

 

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