To generate a wave format output file run say 'Hello World' -o out. Here is the outcome on Max OS X 10.7.5 3gp2 3GPP-2 Audio (.3g2) ģgpp 3GP Audio (.3gp) ĪIFC AIFC (.) Īdts AAC ADTS (.aac.adts) Ĭaff CAF (.caf) To see the list of output file format available run say -file-format=?. To change the output file format, just change the output file extension. There are couple of other voices which can be downloaded from Apple’s web site. Here is the default list on Mac OS X 10.7.5 at the time of writing this article. To see the list of voices available on your system run say -v ?. Voice Alex is one of the most popular voices and you can use it if you don’t want to spend too much time on trying other voices. Outcome: mac-text-to-speech-tts-demo-victoria.aiff Outcome: mac-text-to-speech-tts-demo-bruce.aiff Outcome: mac-text-to-speech-tts-demo-alex.aiff Say -v Alex 'Using Text to Speech (TTS), you can have Alex and other Mac voices speak selected text so you can hear a word as you see it onscreen.' -o mac-text-to-speech-tts-demo-alex.aiff Here is sample output for text “Using Text to Speech (TTS), you can have Alex and other Mac voices speak selected text so you can hear a word as you see it onscreen.” using various voices:

Using say with voice Alex and output audio to a file (default format aiff):.

In case you need bigger pause repeat comma e.g. Apple (AAPL) has built speech services directly into the OS X operating system. The operating system has built-in support for speech technology, and can take advantage of Cepstral's voices.

PITTSBURGH - Cepstral LLC released its Swift Text-to-Speech (TTS) software on Apple's Mac OS X operating system. Use say to pronounce “Hello world” with default voice: Cepstral TTS Voices Released for Mac OS X.This is pretty handy to generate audio file given the text. It also lets to generate an audio file in various formats and voices. Mac lets you convert text to speech using command line utility “say”.

Mac os x tts voices