First off, I hope this thread is in the correct place (the title of the forum is "Measurements (plus subjective impressions)", but I'm prepared to be booted elsewhere if not. @Tyll Hertsens recent blog post linked to an interesting document on perceptual characteristics of audio, essentially with the aim of making subjective impressions as objective as possible. To that end, the article proposes a subset of commonly used audio analysis terms be used, along with a glossary explaining them (pages 21 - 27). There's also a diagram with their definition of the audio frequency range (I've seen many of these before and few seem to agree), and also an interesting diagram showing the frequency ranges typically used by various instruments/voices (both page 28). Whilst the document has been drawn up by Delta's SenseLab (a company offering audio product testing services), it could I think have some value in the enthusiast arena, where for the most part subjectivity rules and one can only really get a handle on a product analysis when one is familiar with the particular reviewer/commentator's preferences etc. SBAF is far better in this respect than "other" places, but a standard set of terminologies with clear definitions at least could be beneficial. I'd be interested to hear other people's thoughts, and do have a look at the document as it's quite a good read.