Currently IBM Watson Speech to Text service supports only “ogg” compressed format. However, a new standard for WebRTC platform is “webm”. As a result, WebRTC could be either used with Firefox only or client browser should send huge “wav” files without compression to Bluemix. Since adding support of new audio format for the STT server is trivial, please add as many compressed formats as possible (at least formats that are not restricted by some license).
NOTICE TO EU RESIDENTS: per EU Data Protection Policy, if you wish to remove your personal information from the IBM ideas portal, please login to the ideas portal using your previously registered information then change your email to "email@example.com" and first name to "anonymous" and last name to "anonymous". This will ensure that IBM will not send any emails to you about all idea submissions