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Re: measuring music playback quality
Marc,
Some colleagues of mine ran tests like this a few years ago. See:
Beresford, K, Ford, N, Rumsey, F and Zielinski, SK (2006) Contextual effects on sound quality judgements: listening room and automotive environments, 120th AES Convention, Paper 6648, http://epubs.surrey.ac.uk/565.
Beresford, K., Ford, N., Rumsey, Francis and Zielinski, Slawomir (2006) Contextual effects on sound quality judgements: Part 2 – multi-stimulus vs. single stimulus method, 121st AES Convention, Paper 6913, http://epubs.surrey.ac.uk/526.
They found a single stimulus method to be invalid under their particular experimental setup.
I think the point is that everyone has an internal reference: an idea of what sounds good, based on their experience. This can vary dramatically between people, and can be biased by many factors. The identified reference in multi-stimulus experiments attempts to minimise this effect by providing everyone with a common reference.
Chris
On 24 Jan 2012, at 07:48, Marc Schoenwiesner wrote:
> Dear all,
>
> I am trying to get an overview of different methods that have been
> used to measure the perceived quality of a music recording with the
> goal to evaluate different loudspeakers, playback systems, earplugs,
> etc.
> I have seen a number of papers that compare two or more setups by
> asking listeners which recording they prefer. I have not come across a
> measure of absolute quality rather than quality comparisons, for
> instance by asking the (expert) listener to rate the quality of a
> single system. Is anyone aware of such an experiment? (I am
> particularly interested in absence of spectral colouring and
> distortions, but any example will do.)
>
> Best,
> Marc
>
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