Amazon Polly Developer Guide
Step 3.2: Getting Started Exercise
Step 3.2: Getting Started Exercise Using the AWS CLI
Now you can test the speech synthesis offered by Amazon Polly. In this exercise, you call the
SynthesizeSpeech operation by passing in sample text. You can save the resulting audio as a file and
verify its content.
If you specified one of the Amazon Polly supported regions when you configured the AWS CLI, you can
omit the following line from the AWS CLI code examples. If you specified a region not supported by
Amazon Polly in your AWS CLI configuration (for example, if you're an existing AWS customer using other
services in regions that don't support Amazon Polly), you must include the following line:
--region polly-supported-aws-region
1. Run the synthesize-speech AWS CLI command to synthesize sample text to an audio file
(hello.mp3).
The following AWS CLI example is formatted for Unix, Linux, and macOS. For Windows, replace
the backslash (\) Unix continuation character at the end of each line with a caret (^) and use full
quotation marks (") around the input text with single quotes (') for interior tags.
aws polly synthesize-speech \
--output-format mp3 \
--voice-id Joanna \
--text 'Hello, my name is Joanna. I learned about the W3C on 10/3 of last year.' \
hello.mp3
In the call to synthesize-speech, you provide sample text for the synthesis, the voice to use (by
providing a voice ID, explained in the following step 3), and the output format. The command saves
the resulting audio to the hello.mp3 file.
In addition to the MP3 file, the above operation produces the following output to the console.
{
"ContentType": "audio/mpeg",
"RequestCharacters": "71"
}
2. Play the resulting hello.mp3 file to verify the synthesized speech.
3. You can get the list of available voices by using the DescribeVoices operation. Run the following
describe-voices AWS CLI command.
aws polly describe-voices
In response, Amazon Polly returns the list of all available voices. For each voice the response
provides the following metadata: voice ID, language code, language name, and the gender of the
voice. The following is a sample response:
{
"Voices": [
{
"Gender": "Female",
"Name": "Salli",
"LanguageName": "US English",
"Id": "Salli",
"LanguageCode": "en-US"
},
{
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