Requirements / Installation
You can then install the package globally:
$ npm install tts-cli -g
You'll also need to set up your computer:
- AWS Polly: Get your AWS access keys and configure your machine with your credentials.
- Google Cloud Text-to-Speech: Create and set up a Cloud Platform account and download your credentials file.
$ tts [inputfile] outputfile [options]
# Using a text file as the input, changing the default voice, and specifying the AWS keys. $ tts test.txt test.mp3 --voice Brian --access-key ABCDEFG --secret-key hwl500CZygitV91n # Using Google Cloud Text-to-Speech. $ tts test.txt test.mp3 --service gcp --language en-US # Passing a string of text as the input. $ echo "Hello world! How are you?" | tts test.mp3
inputfileis the text file you want to convert to speech. It should be encoded as UTF-8. If excluded, tts-cli will read in the text from
outfileis the filename to save the audio to.
--access-key KEY-- AWS access key ID
--email EMAIL-- GCP client email address (required if
--private-key KEY-- GCP private key
--private-key-file FILE-- GCP private key file (
--project-file FILE-- GCP
.jsonfile with project info
--project-id ID-- GCP project ID (e.g.
--secret-key KEY-- AWS secret access key
--service TYPE-- Cloud service to use (
--throttle SIZE-- Number of simultaneous requests allowed against the API (default
--effect ID-- Apply an audio effect profile. Can be specified multiple times.
--ffmpeg BINARY-- Path to the ffmpeg binary (defaults to the one in PATH)
--format FORMAT-- Target audio format (
--gain GAIN-- Volume gain, where
0.0is normal gain
--gender GENDER-- Gender of the voice (
--language LANG-- Code for the desired language (default
en-USfor GCP, no default for AWS)
--lexicon NAME-- Apply a stored pronunciation lexicon. Can be specified multiple times.
--pitch PITCH-- Change in speaking pich, in semitones
--speed RATE-- Speaking rate, where
1.0is normal speed
--region REGION-- AWS region to send requests to (default
--sample-rate RATE-- Audio frequency, in hertz. See the API docs for valid values.
--type TYPE-- Type of input text (
--voice VOICE-- Voice to use for the speech (default
Note that not all services support all options. For example, AWS Polly does not understand the
speed option. See the options documentation for more info.
What It Does
- Splits the text into the maximum size allowed by the API (1500 characters for AWS, 5000 characters for Google Cloud).
- Compresses the white space inside the text to minimize the cost.
- Uses your credentials in
~/.aws/credentials(AWS) or the
GOOGLE_APPLICATION_CREDENTIALS(Google Cloud) file.
- Calls the API (in a throttled manner) to get each text part converted to audio.
- Combines the audio together into a single file.
- Make sure Node.js is working. Running
node --versionon the command line should give a version of v6.0.0 or higher.
- Make sure ffmpeg is installed. Running
ffmpeg -versionon the command line should give you the version information.
- Make sure you can connect to AWS or Google Cloud normally.
export DEBUG=*first (Linux or Mac) to turn on debugging output. On Windows you'll need to use
set DEBUG=*(command prompt) or
$env:DEBUG = "*"(PowerShell).
Pull requests and suggestions are welcome. Create a new issue to report a bug or suggest a new feature.
Please add tests and maintain the existing styling when adding and updating the code. Run
npm run lint to lint the code.
Copyright 2017 Eric Heikes.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
This project is not affiliated with Amazon or Google.