Lots of examples being added in the comments, so I'll mention Google Tone. https://chrome.google.com/webstore/detail/google-tone/nnckehldicaciogcbchegobnafnjkcn

Lots of examples being added in the comments, so I'll mention Google Tone. https://chrome.google.com/webstore/detail/google-tone/nnckehldicaciogcbchegobnafnjkcne?hl=en https://chrome.google.com/webstore/detail/google-tone/nnckeh...