Stereo image sharpness test

This experiment is try and listen how imbalance of frequency response on various third octave bands change perception of stereo image.

Try if you can sharpen noise to very small point to very strong phantom image by adjusting frequency response balance. Should work on headphones, but also for speakers unless your room prevents you to.

Hit Start to enable browser start audio. Wait for sound source and filter selection to appear, might take few seconds.

Adjust sound volume, 0 - 10. Volume is initially set to 5 to protect your ears. You also need to select an audio source before sound starts.

Audio source

Balance

Band

Legend:

Sample rate: <waiting audio context>
Audio: <waiting audio context>

Filters:
<waiting audio context>
Balance:

Info

Filter Q is 0.7, about one octave wide.
The filters used are listed below: 





    



	

		
Credits:

		
Speech sample:

Demonte, Philippa (2019): Speech corpus - example of edited audio: Harvard_L01_S01_0.wav. University of Salford. Media. https://doi.org/10.17866/rd.salford.7857845.v1



Violin sample:

Pätynen, J., Pulkki, V., and Lokki, T., "Anechoic recording system for symphony orchestra," Acta Acustica united with Acustica, vol. 94, nr. 6, pp. 856-865, November/December 2008. [Online IngentaConnect]

https://research.cs.aalto.fi/acoustics/virtual-acoustics/research/acoustic-measurement-and-analysis/85-anechoic-recordings.html



Music:

Happy Clappy Ukulele by Shane Ivers - https://www.silvermansound.com



Music:

Mirã / Lavoura - MM Moods loop, https://bumpfoot.net/foot276.html