Having mentioned Pokémon cries in my earlier post on a Pokémon soundboard, I now have a bit of a need to address them as well in this rather sonorous "gimme five" week. Specifically, I'd like to address a peculiar property of some of them. Many would expect that the cries are differentiable - and most of them are, but a few are actually quite similar almost to the point of being difficult to differentiate. This state of affairs deserves a bit of exploration for what it is and what might make it that way.
Some of the similar cries are in the early generations. The cries of Caterpie, Butterfree, and Goldeen are the most notable in this regard, having the same two-tone sequence. A little less so but still quite similar are the cries for Scizor and Heracross, which have a sequence of tones that closely resemble each other. Shorter Pokémon cries, and especially ones that aren't exactly "tonal", can also easily resemble each other, as in the case of Ninjask and Feebas, among other possible examples.
Then there are the factors that go into why these cries may be as such. Certainly, the limited resources of the older games on older consoles might have necessitated some resources to be used in creative ways, and the cries of the first two sets of Pokémon above fit the bill. A more obtuse reason that involves the other set is that things simply turn out that way - or in other words, they're coincidental, whether by my own perceptions or others'. The similarity may be both by state and perception.
Yet it should be noted that in modern times, these cries have become more differentiable, at least to an extent. The Caterpie cry is shorter, while the Goldeen cry is a little "buzzier", and the Butterfree cry is the longest of the three. The one for Scizor is slightly more extended and slightly lower in pitch than the one for Heracross, perhaps also sounding a little "rougher". As well, the Ninjask cry is slightly longer than the one for Feebas, making it more distinct. It's still up to a person to recognize them.
Pokémon cries serve to identify the species by the supposed sounds that they make, and for the most part then and now, the species have distinctly differentiable cries to allow them to be told apart, which isn't too peculiar. Yet by the above, some inherent similarities are still evident among some of them by the way that they are or perhaps have been, and that may be a remnant element of peculiarity for some of the species in question. At least, the Pokémon cries are still fascinating and remarkable.
One year ago: The Music of TCGP
Two years ago: Cosplay: "My Town" Food Festival II
Three years ago: Cosplay: The Lidos Cosplay Contest
Four years ago: Chiki Balls Pokémon Coins: Selections Once Again
Five years ago: Night Falls, Heavens Rise
Six years ago: Pokémon Center Pilot Pikachu Plush - Narita Airport Ver.
Seven years ago: Stage Coin Tricks in Shuffle
Eight years ago: Cosplay: Utsuru F!